# BigTime, Microsoft Project Server vs Celoxis Comparison

| | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Star Rating** | 4.5 out of 5 | 4.1 out of 5 | 4.6 out of 5 | 
| **Total Reviews** | 1,692 | 189 | 621 | 
| **Largest Market Segment** | Small-Business (78.1% of reviews) | Enterprise (44.8% of reviews) | Mid-Market (56.2% of reviews) | 
| **Entry Level Price** | $20.00 1 user Per Month | $30 per user per month | $10.00 1 User Per Month | 

---
## Top Pros & Cons

### BigTime

Pros:
- Ease of Use (102 reviews)
- Time Tracking (76 reviews)

Cons:
- Missing Features (22 reviews)
- Manual Entry (16 reviews)

### Microsoft Project Server

Pros:
- Multi-User Access (2 reviews)
- Easy Creation (1 reviews)

Cons:
- Change Adjustments (2 reviews)
- Billing Issues (1 reviews)

### Celoxis

Pros:
- Project Management (115 reviews)
- Project Tracking (98 reviews)

Cons:
- Learning Curve (87 reviews)
- Steep Learning Curve (52 reviews)

---
## Ratings Comparison
| Rating | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
  | **Meets Requirements** | 8.8 (1407 reviews) | 8.4 (129 reviews) | 8.9 (442 reviews) | 
  | **Ease of Use** | 8.7 (1459 reviews) | 7.6 (128 reviews) | 9.0 (448 reviews) | 
  | **Ease of Setup** | 8.2 (989 reviews) | 7.1 (53 reviews) | 8.9 (350 reviews) | 
  | **Ease of Admin** | 8.6 (951 reviews) | 7.4 (50 reviews) | 8.6 (160 reviews) | 
  | **Quality of Support** | 9.2 (1305 reviews) | 7.8 (114 reviews) | 9.0 (434 reviews) | 
  | **Has the product been a good partner in doing business?** | 9.1 (950 reviews) | 7.8 (47 reviews) | 8.8 (159 reviews) | 
  | **Product Direction (% positive)** | 8.7 (1375 reviews) | 7.2 (123 reviews) | 9.5 (439 reviews) | 

---
## Pricing

### BigTime

#### Entry-Level Pricing

Plan: Essentials

Price: $20.00 1 user Per Month

Description: Deliver great work and get paid faster.

Key Features:
- Time Tracking
- Expense Management
- Project Management 

[Browse all 4 editions](https://www.g2.com/products/bigtime/pricing)

#### Free Trial

Yes

### Microsoft Project Server

#### Entry-Level Pricing

Plan: Project Online Professional

Price: $30 per user per month


[Browse all 3 editions](https://www.g2.com/products/microsoft-project-server/pricing)

#### Free Trial

No

### Celoxis

#### Entry-Level Pricing

Plan: Core

Price: $10.00 1 User Per Month

Key Features:
- Advanced Analytics & B.I.
- Aggregated Dashboards	
- Gantt Charts

[Browse all 4 editions](https://www.g2.com/products/celoxis/pricing)

#### Free Trial

Yes

---
## Features Comparison By Category

### Expense Management

| Product | Score | Reviews |
|---|---|---|
| **BigTime** | 7.9/10 | 1077 |
| **Microsoft Project Server** | N/A | N/A |
| **Celoxis** | N/A | N/A |

#### Expense Reports

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Ease of Creating Expense Reports** | 8.7 (522 reviews) | Not enough data | Not enough data | 
| **Bank / Credit Card Integration** | 7.8 (234 reviews) | Not enough data | Not enough data | 
| **Smart Categorization** | 8.0 (280 reviews) | Not enough data | Not enough data | 
| **Digital Receipt Management** | 8.5 (352 reviews) | Not enough data | Not enough data | 
| **Employee Reimbursement** | 8.6 (381 reviews) | Not enough data | Not enough data | 
| **Currency Conversions** | 7.4 (132 reviews) | Not enough data | Not enough data | 
| **Credit Card Integration** | 7.8 (210 reviews) | Not enough data | Not enough data | 

#### Agentic AI - Expense Management

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 
| **Cross-system Integration** | Not enough data | Not enough data | Not enough data | 

#### Travel Management

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Ease of Booking** | Feature Not Available | Not enough data | Not enough data | 
| **Itinerary Management** | Feature Not Available | Not enough data | Not enough data | 
| **Trip Notifications** | Feature Not Available | Not enough data | Not enough data | 
| **Advanced Integrations** | 7.9 (199 reviews) | Not enough data | Not enough data | 

#### Client Invoicing

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Invoice Creation and Delivery** | 8.4 (704 reviews) | Not enough data | Not enough data | 
| **Electronic Payments** | 7.8 (357 reviews) | Not enough data | Not enough data | 
| **Project Accounting / Revenue Recognition** | 8.3 (533 reviews) | Not enough data | Not enough data | 

#### Generative AI - Expense Management

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Image-to-Text** | Not enough data | Not enough data | Not enough data | 
| **Text Generation** | Not enough data | Not enough data | Not enough data | 
| **Text Summarization** | Not enough data | Not enough data | Not enough data | 

#### Mobile

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Receipt Capture** | 8.6 (350 reviews) | Not enough data | Not enough data | 
| **Mileage Tracking** | 8.4 (293 reviews) | Not enough data | Not enough data | 
| **Travel Itinerary and Flight Status Updates** | Feature Not Available | Not enough data | Not enough data | 

#### Platform

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Embedded AI / Machine Learning** | 6.9 (137 reviews) | Not enough data | Not enough data | 
| **Complex Approval Workflow** | 8.0 (280 reviews) | Not enough data | Not enough data | 

#### Administration

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **PCI Regulation Compliant** | 7.3 (117 reviews) | Not enough data | Not enough data | 

#### Administration

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Business Tool Integration** | 8.4 (693 reviews) | Not enough data | Not enough data | 
| **Workflow** | 8.4 (693 reviews) | Not enough data | Not enough data | 
| **Automated Reminders** | 8.0 (547 reviews) | Not enough data | Not enough data | 
| **Policy Compliance Management** | 8.0 (415 reviews) | Not enough data | Not enough data | 
| **User, Role, and Access Management** | 8.7 (785 reviews) | Not enough data | Not enough data | 

#### Platform

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Reporting** | 8.4 (827 reviews) | Not enough data | Not enough data | 
| **APIs / Integration** | 8.1 (517 reviews) | Not enough data | Not enough data | 
| **Internationalization** | 7.6 (340 reviews) | Not enough data | Not enough data | 
| **Performance and Reliability** | 8.8 (796 reviews) | Not enough data | Not enough data | 
| **Mobile User Support** | 8.2 (576 reviews) | Not enough data | Not enough data | 
| **Offline** | 7.8 (360 reviews) | Not enough data | Not enough data | 

### Project Management

| Product | Score | Reviews |
|---|---|---|
| **BigTime** | 7.8/10 | 403 |
| **Microsoft Project Server** | 8.1/10 | 78 |
| **Celoxis** | 8.9/10 | 483 |

#### Tasks

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Creation & Assignment** | 8.6 (297 reviews) ✓ Verified | 8.3 (62 reviews) ✓ Verified | 9.0 (306 reviews) ✓ Verified | 
| **Due Dates** | 8.4 (271 reviews) ✓ Verified | 8.6 (64 reviews) ✓ Verified | 9.0 (310 reviews) ✓ Verified | 
| **Task Prioritization** | 8.0 (261 reviews) ✓ Verified | 8.4 (63 reviews) ✓ Verified | 9.0 (305 reviews) ✓ Verified | 
| **To-Do Lists** | 7.8 (241 reviews) ✓ Verified | 7.9 (59 reviews) ✓ Verified | 8.9 (302 reviews) ✓ Verified | 
| **Dependencies** | 7.6 (218 reviews) ✓ Verified | Feature Not Available | 8.9 (303 reviews) ✓ Verified | 
| **Mass Updates** | 7.9 (229 reviews) | 7.6 (57 reviews) ✓ Verified | 8.8 (297 reviews) | 
| **Drag & Drop** | 7.7 (235 reviews) ✓ Verified | 7.5 (59 reviews) ✓ Verified | 8.8 (302 reviews) ✓ Verified | 
| **Recurring Tasks** | 7.9 (232 reviews) ✓ Verified | Feature Not Available | 8.9 (297 reviews) | 

#### Projects

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Planning** | 8.1 (249 reviews) ✓ Verified | 8.8 (64 reviews) ✓ Verified | 9.1 (310 reviews) ✓ Verified | 
| **Project Map** | 7.7 (228 reviews) ✓ Verified | 8.6 (61 reviews) ✓ Verified | 8.9 (302 reviews) ✓ Verified | 
| **GANTT** | 7.4 (215 reviews) ✓ Verified | 8.9 (61 reviews) ✓ Verified | 9.0 (305 reviews) ✓ Verified | 
| **Calendar View** | 7.8 (228 reviews) ✓ Verified | 8.8 (62 reviews) ✓ Verified | 8.9 (301 reviews) ✓ Verified | 
| **Views** | 7.8 (247 reviews) ✓ Verified | 8.3 (60 reviews) ✓ Verified | 8.9 (305 reviews) ✓ Verified | 
| **Project Budgeting** | 8.3 (292 reviews) ✓ Verified | 7.6 (60 reviews) ✓ Verified | 9.0 (307 reviews) | 
| **Issue Tracking** | 7.5 (219 reviews) ✓ Verified | 7.8 (60 reviews) ✓ Verified | 8.9 (296 reviews) | 
| **Templates** | 7.9 (267 reviews) ✓ Verified | 8.0 (58 reviews) ✓ Verified | 8.9 (297 reviews) ✓ Verified | 
| **Critical Path** | 7.5 (205 reviews) ✓ Verified | Feature Not Available | 8.8 (299 reviews) | 
| **Time & Expense** | 8.9 (334 reviews) ✓ Verified | 7.4 (58 reviews) ✓ Verified | 8.9 (301 reviews) | 
| **Methodologies** | 7.6 (197 reviews) ✓ Verified | 7.7 (55 reviews) ✓ Verified | 8.9 (297 reviews) ✓ Verified | 

#### Resource Management

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Resource Definiton** | 7.8 (212 reviews) ✓ Verified | 8.2 (60 reviews) ✓ Verified | 8.9 (301 reviews) ✓ Verified | 
| **Capacity** | 8.1 (238 reviews) ✓ Verified | 8.0 (61 reviews) ✓ Verified | 9.0 (309 reviews) ✓ Verified | 
| **Scheduling** | 8.0 (243 reviews) ✓ Verified | 8.5 (62 reviews) ✓ Verified | 9.1 (310 reviews) ✓ Verified | 

#### Project Monitoring

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Baselining / KPIs** | 7.8 (201 reviews) ✓ Verified | 7.9 (58 reviews) ✓ Verified | 9.0 (299 reviews) ✓ Verified | 
| **Resource Allocation** | 7.8 (229 reviews) ✓ Verified | 8.5 (63 reviews) ✓ Verified | 9.0 (314 reviews) ✓ Verified | 
| **Dashboards** | 8.2 (274 reviews) ✓ Verified | 7.8 (61 reviews) ✓ Verified | 9.1 (311 reviews) ✓ Verified | 

#### Generative AI

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **AI Text Generation** | Feature Not Available | 7.6 (16 reviews) | 8.8 (249 reviews) | 
| **AI Text Summarization** | 6.2 (64 reviews) | 7.5 (16 reviews) | Feature Not Available | 

#### Agentic AI - Project Management

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | 8.9 (136 reviews) | 
| **Multi-step Planning** | Not enough data | Not enough data | 8.9 (135 reviews) | 
| **Cross-system Integration** | 6.0 (5 reviews) | Not enough data | 9.0 (135 reviews) | 
| **Adaptive Learning** | Not enough data | Not enough data | 9.1 (136 reviews) | 
| **Natural Language Interaction** | Not enough data | Not enough data | 9.0 (135 reviews) | 
| **Proactive Assistance** | Not enough data | Not enough data | 9.0 (136 reviews) | 
| **Decision Making** | 6.3 (5 reviews) | Not enough data | 9.1 (135 reviews) | 

### Project and Portfolio Management

| Product | Score | Reviews |
|---|---|---|
| **BigTime** | N/A | N/A |
| **Microsoft Project Server** | N/A | N/A |
| **Celoxis** | 9.0/10 | 278 |

#### Portfolio Management

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Portfolio Types** | Not enough data | Not enough data | 9.0 (216 reviews) ✓ Verified | 
| **Planning** | Not enough data | Not enough data | 9.0 (220 reviews) ✓ Verified | 
| **Alignment** | Not enough data | Not enough data | 9.0 (217 reviews) ✓ Verified | 
| **Portfolio Mix** | Not enough data | Not enough data | 9.0 (216 reviews) ✓ Verified | 

#### Project Management

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Dependencies** | Not enough data | Not enough data | 9.0 (219 reviews) ✓ Verified | 
| **Priorities** | Not enough data | Not enough data | 9.1 (220 reviews) ✓ Verified | 
| **Lean Management** | Not enough data | Not enough data | 9.0 (217 reviews) ✓ Verified | 

#### Resource Management

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Definition** | Not enough data | Not enough data | 8.9 (217 reviews) ✓ Verified | 
| **Allocation** | Not enough data | Not enough data | 9.0 (217 reviews) ✓ Verified | 
| **Optimization** | Not enough data | Not enough data | 9.0 (214 reviews) ✓ Verified | 

#### Data & Analytics

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Data Consolidation** | Not enough data | Not enough data | 8.9 (214 reviews) ✓ Verified | 
| **Visualizations** | Not enough data | Not enough data | 9.1 (214 reviews) ✓ Verified | 
| **Performance** | Not enough data | Not enough data | 9.0 (216 reviews) ✓ Verified | 
| **Risk Analysis** | Not enough data | Not enough data | 8.9 (211 reviews) ✓ Verified | 

#### Strategy - Project and Portfolio Management

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Simulation** | Not enough data | Not enough data | 8.8 (173 reviews) | 
| **Tracking** | Not enough data | Not enough data | 9.0 (172 reviews) | 
| **Planning** | Not enough data | Not enough data | 8.9 (173 reviews) | 
| **Objectives** | Not enough data | Not enough data | 8.9 (171 reviews) | 
| **Visiblity** | Not enough data | Not enough data | 8.9 (172 reviews) | 
| **Alignment** | Not enough data | Not enough data | 8.8 (171 reviews) | 
| **Risk Management** | Not enough data | Not enough data | 8.9 (169 reviews) | 
| **Implementation** | Not enough data | Not enough data | 9.0 (171 reviews) | 
| **Optimization** | Not enough data | Not enough data | 9.0 (170 reviews) | 
| **Prioritization** | Not enough data | Not enough data | 9.0 (171 reviews) | 

### Resource Management

| Product | Score | Reviews |
|---|---|---|
| **BigTime** | 7.7/10 | 65 |
| **Microsoft Project Server** | N/A | N/A |
| **Celoxis** | 8.9/10 | 219 |

#### Planning

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Resource Definiton** | 7.5 (46 reviews) | Not enough data | 8.9 (184 reviews) | 
| **Capacity** | 7.8 (53 reviews) | Not enough data | 9.0 (185 reviews) | 
| **Scheduling** | 7.8 (51 reviews) | Not enough data | 8.9 (184 reviews) | 

#### Optimization

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Performance** | 7.9 (55 reviews) | Not enough data | 9.0 (185 reviews) | 
| **Forecasting** | 7.6 (51 reviews) | Not enough data | 8.8 (182 reviews) | 
| **Corrections** | 7.3 (49 reviews) | Not enough data | 8.8 (183 reviews) | 

### Professional Services Automation

| Product | Score | Reviews |
|---|---|---|
| **BigTime** | 8.0/10 | 240 |
| **Microsoft Project Server** | N/A | N/A |
| **Celoxis** | N/A | N/A |

#### Customer Management

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Customer Profiles** | 8.5 (120 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Sales** | 8.0 (82 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Marketing** | 7.5 (70 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Client Portal** | 7.9 (84 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Project Management

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Project Planning** | 8.2 (108 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Project Tracking** | 8.7 (160 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Resource Definition** | 8.1 (98 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Resource Management** | 8.3 (107 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Accounting

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Revenue Recognition** | 8.2 (101 reviews) | Not enough data | Not enough data | 
| **Invoice Management** | 8.5 (121 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Payments** | 7.9 (98 reviews) | Not enough data | Not enough data | 
| **Project Accounting** | 8.4 (122 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Budget Tracking** | 8.6 (128 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Portfolio Management

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Portfolio Definition** | 8.0 (81 reviews) | Not enough data | Not enough data | 
| **Portfolio Performance** | 8.2 (80 reviews) | Not enough data | Not enough data | 
| **Risk** | 7.7 (74 reviews) | Not enough data | Not enough data | 
| **Portfolio Mix** | 8.1 (73 reviews) | Not enough data | Not enough data | 

#### Analytics

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Forecasting** | 8.3 (91 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Reporting** | 8.4 (159 reviews) ✓ Verified | Not enough data | Not enough data | 
| **KPIs** | 8.1 (80 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Administration

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Standard Integrations** | 8.2 (114 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Workflow** | 8.1 (132 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Access Management** | 8.3 (114 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Platform

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **APIs** | 8.2 (80 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Internationalization** | 8.0 (68 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Performance and Reliability** | 8.6 (154 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Mobile** | 7.8 (116 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Offline Access** | 7.4 (74 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Generative AI

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **AI Text Generation** | 6.5 (9 reviews) | Not enough data | Not enough data | 
| **AI Text Summarization** | 6.5 (9 reviews) | Not enough data | Not enough data | 

#### Artificial Intelligence - Professional Services Automation

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Predictive Forecasting** | Not enough data | Not enough data | Not enough data | 
| **Smart task suggestions** | Not enough data | Not enough data | Not enough data | 
| **Automated workflows** | Not enough data | Not enough data | Not enough data | 

#### Agentic AI - Professional Services Automation

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Adaptive Learning** | Not enough data | Not enough data | Not enough data | 
| **Proactive Assistance** | Not enough data | Not enough data | Not enough data | 

### Billing

| Product | Score | Reviews |
|---|---|---|
| **BigTime** | 7.8/10 | 320 |
| **Microsoft Project Server** | N/A | N/A |
| **Celoxis** | N/A | N/A |

#### Bill Generation

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Templates** | 8.0 (243 reviews) | Not enough data | Not enough data | 
| **Digital Billing** | 8.4 (217 reviews) | Not enough data | Not enough data | 
| **Recurring Billing** | 7.7 (175 reviews) | Not enough data | Not enough data | 

#### Bill Processing

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Consolidation** | 7.7 (188 reviews) | Not enough data | Not enough data | 
| **Batch Invoicing** | 8.0 (202 reviews) | Not enough data | Not enough data | 
| **Management** | 8.3 (235 reviews) | Not enough data | Not enough data | 

#### Integration

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Accounting** | 8.2 (242 reviews) | Not enough data | Not enough data | 
| **Payments** | 7.8 (201 reviews) | Not enough data | Not enough data | 
| **ERP** | 7.1 (153 reviews) | Not enough data | Not enough data | 

#### Agentic AI - Billing

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Autonomous Task Execution** | 6.9 (6 reviews) | Not enough data | Not enough data | 

### Accounting & Finance

| Product | Score | Reviews |
|---|---|---|
| **BigTime** | N/A | N/A |
| **Microsoft Project Server** | N/A | N/A |
| **Celoxis** | N/A | N/A |

#### Agentic AI - Accounting & Finance

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 

### Time Tracking

| Product | Score | Reviews |
|---|---|---|
| **BigTime** | 8.3/10 | 1093 |
| **Microsoft Project Server** | N/A | N/A |
| **Celoxis** | N/A | N/A |

#### Time Tracking

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Ease of Completing Timesheets** | 9.3 (934 reviews) | Not enough data | Not enough data | 
| **Tracking Time to Project/Task** | 9.1 (898 reviews) | Not enough data | Not enough data | 
| **Billable Time Rate Management** | 9.0 (811 reviews) | Not enough data | Not enough data | 

#### Client Invoicing

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Invoice Creation and Delivery** | 8.4 (704 reviews) | Not enough data | Not enough data | 
| **Electronic Payments** | 7.8 (357 reviews) | Not enough data | Not enough data | 
| **Project Accounting / Revenue Recognition** | 8.3 (533 reviews) | Not enough data | Not enough data | 

#### Mobile Time Tracking

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Time Tracking** | 9.1 (776 reviews) | Not enough data | Not enough data | 

#### Administration

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Business Tool Integration** | 8.4 (693 reviews) | Not enough data | Not enough data | 
| **Workflow** | 8.4 (693 reviews) | Not enough data | Not enough data | 
| **Automated Reminders** | 8.0 (547 reviews) | Not enough data | Not enough data | 
| **Policy Compliance Management** | 8.0 (415 reviews) | Not enough data | Not enough data | 
| **User, Role, and Access Management** | 8.7 (785 reviews) | Not enough data | Not enough data | 

#### Platform

| Feature | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Reporting** | 8.4 (827 reviews) | Not enough data | Not enough data | 
| **APIs / Integration** | 8.1 (517 reviews) | Not enough data | Not enough data | 
| **Internationalization** | 7.6 (340 reviews) | Not enough data | Not enough data | 
| **Performance and Reliability** | 8.8 (796 reviews) | Not enough data | Not enough data | 
| **Mobile User Support** | 8.2 (576 reviews) | Not enough data | Not enough data | 
| **Offline** | 7.8 (360 reviews) | Not enough data | Not enough data | 

---
## Categories
**Shared Categories (1):** [Project Management Software](https://www.g2.com/categories/project-management)

**Unique to BigTime (5):** [Professional Services Automation Software](https://www.g2.com/categories/professional-services-automation), [Billing Software](https://www.g2.com/categories/billing), [Expense Management Software](https://www.g2.com/categories/expense-management), [Time Tracking Software](https://www.g2.com/categories/time-tracking-software), [Resource Management Software](https://www.g2.com/categories/resource-management)


**Unique to Celoxis (2):** [Project and Portfolio Management Software](https://www.g2.com/categories/project-and-portfolio-management), [Resource Management Software](https://www.g2.com/categories/resource-management)


---
## Reviewer Demographics

### By Company Size

| Segment | BigTime | Microsoft Project Server | Celoxis | 
|---|---|---|---|
| **Small-Business** | 78.1% | 20.2% | 30.4% | 
| **Mid-Market** | 18.9% | 35.0% | 56.2% | 
| **Enterprise** | 3.0% | 44.8% | 13.4% | 

### By Industry

#### BigTime

- **Accounting:** 13.8%
- **Architecture & Planning:** 10.3%
- **Civil Engineering:** 9.6%
- **Information Technology and Services:** 6.5%
- **Consulting:** 5.8%
- **Management Consulting:** 5.5%
- **Financial Services:** 3.9%
- **Environmental Services:** 3.8%
- **Public Relations and Communications:** 3.4%
- **Computer Software:** 3.4%
- **Other:** 34.0%

#### Microsoft Project Server

- **Information Technology and Services:** 17.1%
- **Computer Software:** 8.5%
- **Construction:** 6.7%
- **Education Management:** 4.3%
- **Telecommunications:** 3.7%
- **Higher Education:** 3.7%
- **Pharmaceuticals:** 3.7%
- **Financial Services:** 3.0%
- **Automotive:** 3.0%
- **Oil & Energy:** 2.4%
- **Other:** 43.9%

#### Celoxis

- **Computer Software:** 19.9%
- **Information Technology and Services:** 18.1%
- **Marketing and Advertising:** 13.5%
- **Construction:** 3.5%
- **Consulting:** 2.9%
- **Architecture & Planning:** 1.8%
- **Financial Services:** 1.8%
- **Automotive:** 1.5%
- **Higher Education:** 1.5%
- **Accounting:** 1.3%
- **Other:** 34.2%

---
## Alternatives

### Alternatives to BigTime

- [Accelo](https://www.g2.com/products/accelo/reviews) — 4.4/5 stars (554 reviews)
- [BQE CORE](https://www.g2.com/products/core-bqe-software-inc/reviews) — 4.3/5 stars (449 reviews)
- [Scoro](https://www.g2.com/products/scoro/reviews) — 4.5/5 stars (495 reviews)
- [Avaza](https://www.g2.com/products/avaza/reviews) — 4.5/5 stars (384 reviews)
- [Kantata Professional Services Automation (formerly Mavenlink+ Kimble)](https://www.g2.com/products/kantata-professional-services-automation-formerly-mavenlink-kimble/reviews) — 4.2/5 stars (1512 reviews)
- [Certinia PS Cloud](https://www.g2.com/products/certinia-ps-cloud/reviews) — 4.3/5 stars (712 reviews)
- [Ruddr Professional Services Automation](https://www.g2.com/products/ruddr-professional-services-automation/reviews) — 4.6/5 stars (336 reviews)
- [Deltek Replicon Time](https://www.g2.com/products/deltek-replicon-time/reviews) — 4.3/5 stars (789 reviews)
- [Paymo](https://www.g2.com/products/paymo/reviews) — 4.6/5 stars (594 reviews)
- [FreshBooks](https://www.g2.com/products/freshbooks/reviews) — 4.5/5 stars (974 reviews)

### Alternatives to Microsoft Project Server

- [Workfront](https://www.g2.com/products/workfront/reviews) — 4.1/5 stars (1221 reviews)
- [Clarity](https://www.g2.com/products/broadcom-clarity/reviews) — 3.7/5 stars (91 reviews)
- [Smartsheet](https://www.g2.com/products/smartsheet/reviews) — 4.4/5 stars (22096 reviews)
- [Planview AdaptiveWork](https://www.g2.com/products/planview-adaptivework/reviews) — 4.1/5 stars (537 reviews)
- [Wrike](https://www.g2.com/products/wrike/reviews) — 4.2/5 stars (4530 reviews)
- [Zoho Projects](https://www.g2.com/products/zoho-projects/reviews) — 4.3/5 stars (550 reviews)
- [Asana](https://www.g2.com/products/asana/reviews) — 4.4/5 stars (13641 reviews)
- [monday Work Management](https://www.g2.com/products/monday-com/reviews) — 4.7/5 stars (15381 reviews)
- [Jira](https://www.g2.com/products/jira/reviews) — 4.3/5 stars (7821 reviews)
- [SAP PPM](https://www.g2.com/products/sap-ppm/reviews) — 4.2/5 stars (33 reviews)

### Alternatives to Celoxis

- [Meisterplan](https://www.g2.com/products/meisterplan/reviews) — 4.7/5 stars (27 reviews)
- [Wrike](https://www.g2.com/products/wrike/reviews) — 4.2/5 stars (4530 reviews)
- [Workfront](https://www.g2.com/products/workfront/reviews) — 4.1/5 stars (1221 reviews)
- [Planview AdaptiveWork](https://www.g2.com/products/planview-adaptivework/reviews) — 4.1/5 stars (537 reviews)
- [Microsoft Project & Portfolio Management](https://www.g2.com/products/microsoft-microsoft-project-portfolio-management/reviews) — 4.0/5 stars (1626 reviews)
- [Smartsheet](https://www.g2.com/products/smartsheet/reviews) — 4.4/5 stars (22096 reviews)
- [Kantata Professional Services Automation (formerly Mavenlink+ Kimble)](https://www.g2.com/products/kantata-professional-services-automation-formerly-mavenlink-kimble/reviews) — 4.2/5 stars (1512 reviews)
- [monday Work Management](https://www.g2.com/products/monday-com/reviews) — 4.7/5 stars (15381 reviews)
- [Oracle Primavera](https://www.g2.com/products/oracle-primavera/reviews) — 4.4/5 stars (385 reviews)
- [IBM Targetprocess](https://www.g2.com/products/ibm-targetprocess/reviews) — 4.3/5 stars (243 reviews)

---
## Top Discussions

### BigTime

- Title: [we need an outside bookkeeping VA to do basic things we don't have time skill to do - any referals??](https://www.g2.com/discussions/we-need-an-outside-bookkeeping-va-to-do-basic-things-we-don-t-have-time-skill-to-do-any-referals) — 2 comments, 2 upvotes
  > **Top comment:** "I've been using the software since 2017.  I also work virtually as a consultant in Finance.  I'm happy to discuss my qualifications.  Please let me know if..."
- Title: [What is BigTime used for?](https://www.g2.com/discussions/what-is-bigtime-used-for) — 1 comment, 1 upvote
  > **Top comment:** "As an architectural business, we use Big Time to log our time, usually in 15 minute intervals, showing how much time was spend on each task, for each phase,..."
- Title: [Does anyone have tips for how they use task tracking in BigTime?](https://www.g2.com/discussions/does-anyone-have-tips-for-how-they-use-task-tracking-in-bigtime) — 1 comment, 1 upvote
  > **Top comment:** " I utilize the workflow alot of task tracking.  This feature helps manage task, see where they are in their life cycle and even drill down to the employee. ..."
- Title: [I saved screen prints for validation on this survey but the Upload function was not working properly](https://www.g2.com/discussions/25185-i-saved-screen-prints-for-validation-on-this-survey-but-the-upload-function-was-not-working-properly) — 1 comment, 1 upvote
  > **Top comment:** "Not familiar with creating a Screen Print within this application and therefore unable to meet this unusual request.  There should be an option for a PDF..."
- Title: [Are you working on the mobile app issues?](https://www.g2.com/discussions/are-you-working-on-the-mobile-app-issues) — 1 comment, 1 upvote
  > **Top comment:** "No only Online"

### Microsoft Project Server

- Title: [Is it well suited for any type of project?](https://www.g2.com/discussions/25549-is-it-well-suited-for-any-type-of-project) — 2 comments, 1 upvote
  > **Top comment:** "sure , it supports project, programs and portfolio  management ,planning and tracking 
i have used with many governmental clients
to manage roadmap,..."
- Title: [What is Microsoft Project Server used for?](https://www.g2.com/discussions/what-is-microsoft-project-server-used-for) — 1 comment
  > **Top comment:** "Microsoft Project Server is used for managing and controlling large-scale projects across an organization."
- Title: [How can I use it for Small-Scale Projects?](https://www.g2.com/discussions/how-can-i-use-it-for-small-scale-projects) — 1 comment, 1 upvote
  > **Top comment:** "Yes, you can use it for any size of organisation "

### Celoxis

- Title: [How has Celoxis transformed your project management approach, and what do you like most about it?](https://www.g2.com/discussions/how-has-celoxis-transformed-your-project-management-approach-and-what-do-you-like-most-about-it) — 2 comments, 3 upvotes
  > **Top comment:** "Celoxis has significantly transformed our project management approach by bringing everything into one unified platform. What I like most about it is its..."
- Title: [What is Celoxis used for?](https://www.g2.com/discussions/what-is-celoxis-used-for) — 1 comment, 2 upvotes
  > **Top comment:** "Comment deleted by user."

---
**Source:** [G2.com](https://www.g2.com) | [Comparison Page](https://www.g2.com/compare/bigtime-vs-microsoft-project-server-vs-celoxis)