Best Calendar Software - Page 18

How Many Calendar Software Products Does G2 Track?

Total Products under this Category: 337

Category Stats (Nov 2026)

  • Average Rating: 4.49/5 (↑0.02 vs Oct 2026) The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: Modern Events Calendar (+7.82%) - Among all products in this category, Modern Events Calendar recorded the largest rating increase compared to last month

Last updated: November 10, 2026

How Does G2 Rank Calendar Software Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 162,100+ Authentic Reviews
  • 337+ Products
  • Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

G2 Grid® for Calendar Software

G2 Grid® for Calendar Software plotting products by satisfaction and market presence

Highlighted products: Google Workspace, Microsoft Outlook, Zoom Workplace, Microsoft 365, ClickUp, Calendly, GlossGenius, and Reclaim.ai.

Underlying data: [Grid® JSON](https://www.g2.com/categories/calendar-software/grids.json?focus%5B%5D=google-workspace&focus%5B%5D=microsoft-outlook&focus%5B%5D=zoom-workplace&focus%5B%5D=microsoft365&focus%5B%5D=clickup&focus%5B%5D=calendly&focus%5B%5D=glossgenius&focus%5B%5D=reclaim-ai)

Probooking

Probooking is a powerful scheduling tool designed for professionals to streamline client appointments. It allows you to create a custom booking page for clients to easily schedule one-on-one or group meetings. Key features include two-way calendar sync with Google and Outlook to avoid conflicts and automated email/SMS reminders to reduce no-shows. The platform also integrates with Stripe and PayPal for seamless payment collection directly from your booking page.

Average Rating: 4.6/5.0

Total Reviews: 5

How Do G2 Users Rate Probooking?

  • Has the product been a good partner in doing business?: 6.7/10 (Category avg: 9.1/10)

Who Is the Company Behind Probooking?

Who Uses This Product?

  • Company Size: 80% Small

What Do G2 Reviewers Say About Probooking?

AI-generated summary from verified user reviews

Pros
  • Users highlight the automatic scheduling feature of Probooking, enhancing efficiency and streamlining their booking processes.
  • Users appreciate the automation features of Probooking, enhancing efficiency and streamlining client appointment management seamlessly.
  • Users appreciate the seamless booking management of Probooking, enhancing client connectivity and boosting business professionalism.
  • Users value the exceptional customer support of Probooking, appreciating the quick and courteous responses for any issues encountered.
  • Users admire the clean, professional interface of Probooking, enhancing business image during appointment scheduling.

What Are Recent G2 Reviews of Probooking?

What Are G2 Users Discussing About Probooking?

ProfitKit

ProfitKit is an affordable, comprehensive analytics platform tailored for subscription-based businesses that leverage Stripe for payment processing, empowering them with insightful data and improved retention workflows.

Who Is the Company Behind ProfitKit?

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Progress Podio

Progress Podio is a flexible, custom collaboration database that enables you to accelerate and simplify your work. An all-in-one solution to accelerate productivity, digitize essential processes, streamline data collection, and automate document workflows in one secure tool. Progress Podio can automate, operationalize, and secure important business and document processes that reduces manual work and increases efficiency. Transform how work is done with versatile forms, powerful data collection, and automated client and document workflows— customized all by you with a few simple clicks. From key industries such as, creative agencies, legal services, accounting firms, real-estate, construction / manufacturing, to key departmental areas—sales, HR, marketing, legal, finance. Podio’s ability to connect diverse teams and disparate processes helps thousands of companies optimize their entire operations in one place. With Progress Podio, give your team a single tool to automate timely processes that unify in one tool. From simplifying client data collection to automating client interactions and agreements, Progress Podio simplifies your business’s most core activities.

Average Rating: 4.2/5.0

Total Reviews: 510

How Do G2 Users Rate Progress Podio?

  • Has the product been a good partner in doing business?: 8.4/10 (Category avg: 9.1/10)

Who Is the Company Behind Progress Podio?

  • Seller: Progress Software
  • Company Website:
  • Year Founded: 1981
  • HQ Location: Burlington, MA.
  • LinkedIn® Page: www.linkedin.com
    4,242 employees on LinkedIn®
  • Ownership: NASDAQ:PRGS

Who Uses This Product?

  • Who Uses This: Owner, Project Manager
  • Top Industries: Real Estate, Information Technology and Services
  • Company Size: 61% Small, 27% Medium

What Do G2 Reviewers Say About Progress Podio?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the ease of use of Progress Podio, making collaboration and task management straightforward and efficient.
  • Users love the automation capabilities of Progress Podio, enhancing their productivity with seamless integrations and easy workflows.
  • Users value the customization options in Progress Podio, allowing tailored workflows for specific company processes.
  • Users appreciate the versatile workflows and integrations of Progress Podio, simplifying task management and collaboration.
  • Users appreciate the easy integrations and automations of Progress Podio, enhancing collaboration and efficiency across business functions.
Cons
  • Users find the learning curve steep, requiring significant effort to set up and manage effectively.
  • Users find the billing issues in Progress Podio challenging, impacting setup and overall satisfaction with customer service.
  • Users find Progress Podio's setup complex and cumbersome, requiring significant effort to achieve an optimal configuration.
  • Users find the poor customer support of Progress Podio frustrating, requiring them to seek external assistance for help.
  • Users find that the slow performance of Progress Podio hinders efficiency and complicates their setup process.

What Are Recent G2 Reviews of Progress Podio?

What Are G2 Users Discussing About Progress Podio?

Prolyncs Online Appointment Booking Software

"Prolyncs is your all-in-one solution for seamlessly launching, managing, and growing your business online. Our mission is to empower entrepreneurs and business owners, allowing them to professionalize their passion and establish a robust online presence. Prolyncs is designed for professionals venturing into entrepreneurship and seeking exponential online growth. Whether you're an independent professional, coach, instructor, studio owner, expert, influencer, or creator, Prolyncs caters to diverse industries, including fitness coaches and studios. Prolyncs transcends conventional online appointment scheduling, offering a comprehensive platform to empower and elevate your online business presence, making growth and success more achievable than ever before."

Who Is the Company Behind Prolyncs Online Appointment Booking Software?

  • Seller: Prolyncs
  • Year Founded: 2021
  • HQ Location: Brampton, CA
  • LinkedIn® Page: www.linkedin.com
    2 employees on LinkedIn®

Proton Calendar

Who Is the Company Behind Proton Calendar?

  • Seller: Proton AG
  • Year Founded: 2014
  • HQ Location: Plan-les-Ouates, Geneva, Switzerland
  • LinkedIn® Page: www.linkedin.com
    973 employees on LinkedIn®

QuickStaff

Quickstaff Pro is simple-to-use scheduling software that is tailored for Event Professionals in the gig economy. Because staff must be “invited” and “accept” each gig, ordinary scheduling tools don’t work. Our software allows you to create events and we invite your staff while monitoring their responses. Quickstaff Pro also allows you to create shifts and custom roles. You can save recurring jobs as templates and include notes, directions, and attachments right in the app. Our dashboard and calendar give you a snapshot of your upcoming events and a red/yellow/green indicator for each event to let you know where you stand at a glance. Quickstaff Pro comes with a no-risk 14-day trial, cancel anytime.

Who Is the Company Behind QuickStaff?

Rainlendar

Rainlendar is a desktop calendar that helps users keep records of their daily tasks, important events and project deadlines.

Who Is the Company Behind Rainlendar?

Re:Schedule

Re:Schedule integrates your Google calendar with agendas, notes & tasks. So you collaborate with your team on meetings from one place. Use Re:Schedule to prepare for meetings, lead productive discussions & track meeting results. Each meeting in Re:Schedule has a shared workspace for real-time collaboration with your team. Create agendas, assign action items, take meeting notes and more.Re:Schedule syncs with your Google Calendar. Available on iPad and Mac.

Average Rating: 4.5/5.0

Total Reviews: 1

Who Is the Company Behind Re:Schedule?

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of Re:Schedule?

Reservio

Reservio is an appointment scheduling and online booking software carefully optimized for over 70 business categories. Free forever version available. It helps organize schedule, accept bookings 24/7, save time spent on phone and gives useful information about business and its clients.

Average Rating: 4.5/5.0

Total Reviews: 4

How Do G2 Users Rate Reservio?

  • Has the product been a good partner in doing business?: 6.7/10 (Category avg: 9.1/10)

Who Is the Company Behind Reservio?

Who Uses This Product?

  • Company Size: 100% Small

What Do G2 Reviewers Say About Reservio?

AI-generated summary from verified user reviews

Pros
  • Users find the booking management of Reservio highly convenient and appreciate its competitive rates.
Cons
  • Users find the limited destinations for booking in Reservio frustrating and restrictive for their needs.

What Are Recent G2 Reviews of Reservio?

What Are G2 Users Discussing About Reservio?

Reservo

¿Buscas un software para administrar tu agenda? Si tienes un Centro Médico o eres Médico independiente, si tienes un Salón de belleza, una Peluquería o una Estética y necesitas gestionar tus reservas, podemos ayudarte. ¿Qué te ofrece Reservo? Te ayudaremos a gestionar tus reservas, ya sea de manera manual o automáticamente desde un módulo en tu página web. Controla tus finanzas, tus ventas, inventarios POS, obtén reportes, herramientas de fidelización, giftcards, recordatorios y más.

Who Is the Company Behind Reservo?

Ricordario

Ricordario is a web-based deadline tracker for Italian small and medium businesses, tradespeople and professionals. It keeps every recurring deadline of company assets in one place and sends email reminders before the due date, on the day and afterwards. Four areas in one tool: - Vehicles and drivers: road tax, roadworthiness inspection, insurance, servicing with maintenance history and mileage, driver licences, fines, leasing and rental contracts. - Real estate: property taxes (IMU, TARI), insurance, condominium fees, maintenance, rental income and leases. - Machinery and equipment: periodic inspections, warranties, service contracts, maintenance history. - Other deadlines: documents, subscriptions, loans and recurring payments. A monthly spending forecast shows what each month will cost. Nothing to install: it runs in the browser on PC and phone. Free plan forever, 30-day trial, one-time payments with no automatic renewal. Data hosted in the EU. Interface in Italian

Who Is the Company Behind Ricordario?

  • Seller: Ricordario
  • HQ Location: Italy
  • LinkedIn® Page: www.linkedin.com
    1 employees on LinkedIn®
  • Ownership: Candox.it - Candox Informatica
Neeraja Prakash
NP
Researched and written by Neeraja Prakash
Updated March 6, 2025