Best Billing Software - Page 9

How Many Billing Software Products Does G2 Track?

Total Products under this Category: 875

Category Stats (Sep 2026)

  • Average Rating: 4.41/5 The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: Billbooks (+16.67%) - Among all products in this category, Billbooks recorded the largest rating increase compared to last month

Last updated: September 01, 2026

How Does G2 Rank Billing Software Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 33,700+ Authentic Reviews
  • 875+ 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 Billing Software

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

Highlighted products: NetSuite, Xero, PayPal Invoicing, BILL AP/AR, Square Point of Sale, Zoho Invoice, Stampli, and Chargebee.

Underlying data: [Grid® JSON](https://www.g2.com/categories/billing/grids.json?focus%5B%5D=oracle-netsuite&focus%5B%5D=xero&focus%5B%5D=paypal-invoicing&focus%5B%5D=bill-ap-ar&focus%5B%5D=square-point-of-sale&focus%5B%5D=zoho-invoice&focus%5B%5D=stampli&focus%5B%5D=chargebee)

Express Invoice

Express Invoice Free Invoicing Software for Windows is a complete and easy invoicing system. This easy to use invoicing software manages and tracks your billing on Windows. You can use Express Invoice to create invoices, quotes, and orders. You can also add multiple users and enable remote web access. Express Invoice Free allows you to create invoices that can be printed, emailed, or faced directly to the recipient. The reporting feature allows you to keep track of payments, overdue accounts, sales performance, and more. Express Invoice Free Invoicing Features: * Easily create quotes, orders, and invoices * Customize text, logo, heading, and more * Send or save files as PDF * Email and fax directly from application * Automatically send out statements to customers * Supports multiple tax rates * Reporting feature including accounting, sales, unpaid invoices, and more * Secure mobile web access

Average Rating: 4.4/5.0

Total Reviews: 13

How Do G2 Users Rate Express Invoice?

  • Has the product been a good partner in doing business?: 9.2/10 (Category avg: 9.0/10)
  • Accounting: 8.1/10 (Category avg: 8.7/10)
  • Payments: 7.3/10 (Category avg: 8.6/10)
  • Management: 7.8/10 (Category avg: 8.8/10)

Who Is the Company Behind Express Invoice?

  • Seller: NCH Software
  • Year Founded: 1993
  • HQ Location: Greenwood Village, CO
  • Twitter: @nchsoftware
    9,910 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    77 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 85% Small, 15% Medium

What Are Recent G2 Reviews of Express Invoice?

What Are G2 Users Discussing About Express Invoice?

Item8

Item8 is a CRM and billing SaaS solution for HasOffers networks.

Average Rating: 4.0/5.0

Total Reviews: 11

Who Is the Company Behind Item8?

  • Seller: Item8
  • Year Founded: 2017
  • HQ Location: Nicosia, Cyprus
  • Twitter: @ITEM8
    1 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    1 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 42% Small, 42% Medium

What Are Recent G2 Reviews of Item8?

What Are G2 Users Discussing About Item8?

Welnvoice

WeInvoice is a free online invoice platform with invoice generators that you can use for your business as well as a huge collection of well crafted invoice templates for you to customize.

Average Rating: 4.6/5.0

Total Reviews: 10

How Do G2 Users Rate Welnvoice?

  • Has the product been a good partner in doing business?: 8.3/10 (Category avg: 9.0/10)
  • Accounting: 8.8/10 (Category avg: 8.7/10)
  • Payments: 8.3/10 (Category avg: 8.6/10)
  • Management: 8.3/10 (Category avg: 8.8/10)

Who Is the Company Behind Welnvoice?

Who Uses This Product?

  • Company Size: 70% Small, 30% Large

What Are Recent G2 Reviews of Welnvoice?

What Are G2 Users Discussing About Welnvoice?

OfficeTools by CARET

OfficeTools provides everything you need to run your tax and accounting practice from a single solution. With OfficeTools Workspace, you can track projects from start to completion, organize client data, manage staff and tax workflow, and automate billing from one central dashboard—all while integrating with the applications you use most. OfficeTools Workspace helps your firm streamline day-to-day operations and work as a unified team.

Average Rating: 3.6/5.0

Total Reviews: 82

How Do G2 Users Rate OfficeTools by CARET?

  • Has the product been a good partner in doing business?: 6.2/10 (Category avg: 9.0/10)
  • Accounting: 9.0/10 (Category avg: 8.7/10)
  • Payments: 7.4/10 (Category avg: 8.6/10)
  • Management: 7.3/10 (Category avg: 8.8/10)

Who Is the Company Behind OfficeTools by CARET?

  • Seller: CARET
  • Year Founded: 1983
  • HQ Location: San Diego, CA
  • LinkedIn® Page: www.linkedin.com
    353 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: Owner
  • Top Industries: Accounting, Financial Services
  • Company Size: 97% Small, 2% Large

What Are Recent G2 Reviews of OfficeTools by CARET?

What Are G2 Users Discussing About OfficeTools by CARET?

Due.com

With Due Annuity, you will know exactly how much money you will have going into your bank account each month. No tricks, no gimmicks. Simple retirement for the modern day human.

Average Rating: 2.8/5.0

Total Reviews: 10

How Do G2 Users Rate Due.com?

  • Has the product been a good partner in doing business?: 3.3/10 (Category avg: 9.0/10)

Who Is the Company Behind Due.com?

  • Seller: Due.com
  • Year Founded: 2015
  • HQ Location: Palo Alto, CA
  • Twitter: @due
    114,083 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    39 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 80% Small, 20% Large

What Are Recent G2 Reviews of Due.com?

What Are G2 Users Discussing About Due.com?

Wireless Bill Calculator

Autonomous wireless bill auditor.

Average Rating: 4.6/5.0

Total Reviews: 10

How Do G2 Users Rate Wireless Bill Calculator?

  • Accounting: 6.9/10 (Category avg: 8.7/10)
  • Payments: 7.1/10 (Category avg: 8.6/10)
  • Management: 6.4/10 (Category avg: 8.8/10)

Who Is the Company Behind Wireless Bill Calculator?

  • Seller: Validas
  • Year Founded: 2007
  • HQ Location: Missouri City, Texas
  • LinkedIn® Page: www.linkedin.com
    4 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Information Technology and Services
  • Company Size: 50% Small, 30% Medium

What Are Recent G2 Reviews of Wireless Bill Calculator?

What Are G2 Users Discussing About Wireless Bill Calculator?

InvoicePlane

InvoicePlane is a self-hosted open source application for managing quotes, invoices, clients and payments.

Average Rating: 4.4/5.0

Total Reviews: 14

How Do G2 Users Rate InvoicePlane?

  • Accounting: 7.7/10 (Category avg: 8.7/10)
  • Payments: 9.4/10 (Category avg: 8.6/10)
  • Management: 8.9/10 (Category avg: 8.8/10)

Who Is the Company Behind InvoicePlane?

  • Seller: InvoicePlane Project
  • Year Founded: 2014
  • HQ Location: Berlin, Germany
  • Twitter: @InvoicePlane
    336 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    2 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Marketing and Advertising
  • Company Size: 93% Small, 7% Medium

What Are Recent G2 Reviews of InvoicePlane?

What Are G2 Users Discussing About InvoicePlane?

Enxoo for Communications

Enxoo is a Salesforce® Consulting Partner since 2012 and registered ISV partner with a vertical expertise in telecommunications industry. We deliver transformation projects to automate and simplify the quote-to-revenue processes. We have completed more than 220 projects for 100+ B2B and wholesale telecom companies in the USA, Europe, Asia and Africa. We have 20+ years of experience in the telecommunications industry and 10+ years of experience in Salesforce® technology. Our flagship solution, Enxoo for Communications, has earned a 5/5 rating on the Salesforce® AppExchange. It enables the growth of marketing and sales efficiency by at least 30% after 1st year.

Average Rating: 4.8/5.0

Total Reviews: 14

How Do G2 Users Rate Enxoo for Communications?

  • Accounting: 8.8/10 (Category avg: 8.7/10)
  • Payments: 9.2/10 (Category avg: 8.6/10)
  • Management: 9.4/10 (Category avg: 8.8/10)

Who Is the Company Behind Enxoo for Communications?

  • Seller: enxoo
  • Year Founded: 2012
  • HQ Location: Warsaw, PL
  • Twitter: @enxooteam
    354 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    208 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 73% Large, 20% Medium

What Do G2 Reviewers Say About Enxoo for Communications?

AI-generated summary from verified user reviews

Pros
  • Users value the excellent customer support from Enxoo for Communications, enhanced by AI-driven insights and 360-degree solutions.
  • Users value the efficiency of Enxoo for Communications, facilitating quick adaptation to changing market conditions.
  • Users appreciate the user-friendly interface of Enxoo for Communications, which simplifies communication and enhances business growth.
  • Users value the flexibility of Enxoo for Communications, enabling efficient adaptation to changing market conditions.
  • Users value the user-friendly interface of Enxoo for Communications, enhancing connectivity and empowering employee workflows.
Cons
  • Users find Enxoo for Communications to be prohibitively expensive, making it hard for smaller telecom operators to adopt.
  • Users find the learning curve steep, as the numerous features can be overwhelming and navigation challenging.
  • Users find the learning difficulty of Enxoo for Communications challenging, often feeling overwhelmed by its many features.
  • Users find navigation issues with Enxoo for Communications, complicating their ability to effectively use the platform.
  • Users find the time-consuming nature of Enxoo for Communications frustrating, especially during document uploads.

What Are Recent G2 Reviews of Enxoo for Communications?

What Are G2 Users Discussing About Enxoo for Communications?

Google Cloud Billing API

Cloud Billing API is a billing tool for Google Cloud Platform, deisgned to be configured in a variety of ways to meet different needs.

Average Rating: 4.3/5.0

Total Reviews: 9

Who Is the Company Behind Google Cloud Billing API?

  • Seller: Google
  • Year Founded: 1998
  • HQ Location: Mountain View, CA
  • Twitter: @google
    31,899,995 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    301,144 employees on LinkedIn®
  • Ownership: NASDAQ:GOOG

Who Uses This Product?

  • Company Size: 50% Large, 50% Small

What Are Recent G2 Reviews of Google Cloud Billing API?

MoonClerk

MoonClerk is a no-code recurring payments platform built for businesses that want to get paid on autopilot — without wrestling with complex payment infrastructure. Whether you're running a membership community, nonprofit, coaching practice, agency, or SaaS product, MoonClerk makes it simple to set up recurring billing, one-time payments, and branded payment forms in minutes — no developer required. Pick your fields, brand it your color, share the link. Powered by Stripe, MoonClerk handles the heavy lifting of payment processing, automated receipts, dunning management, and customer self-service, so you can focus on growing your business instead of chasing invoices. Since 2012, more than 32,000 organizations have used MoonClerk to process over $2.7B across 130+ countries. Key capabilities include: • Branded checkout — hosted, mobile-first payment forms you can embed on Squarespace, WordPress, or Webflow, or share as a link. Apple Pay and Google Pay fire automatically, plus custom fields and pay-what-you-want pricing. • Flexible recurring billing — any interval (weekly, monthly, quarterly, annual, or custom), free trials up to 90 days, setup fees, coupons, quantity and usage-based pricing, and proration on plan changes. • Every Stripe payment method — cards, ACH debit, SEPA and iDEAL, buy-now-pay-later via Affirm, Klarna and Afterpay, and local-currency charging in 135+ currencies. • Built-in customer records — every transaction creates a searchable customer record with tags, filters and CSV export, plus a self-serve portal where customers update cards and manage their own plans. • Revenue reporting — real-time MRR and ARR, cohort retention, LTV, churn, payment and tax reports, all exportable to CSV or available via API. • Failed payment recovery — smart retries based on decline code, branded dunning emails, and Stripe's card-account updater, all on by default. • Developer tools — REST API, 28 signed webhook events, type-safe SDKs for Node, Ruby, Python and PHP, Zapier integration, and a sandbox mode that never touches production. • Security and compliance — PCI-DSS Level 1 (inherited from Stripe), GDPR compliant, SSO via SAML 2.0 and OIDC, 2FA, role-based access, and audit logs. Pricing is a flat monthly fee based on payment volume — starting at $18/month — with every feature included on every plan. No percentage cut of your revenue, no per-seat charges, and no feature gates. Stripe's standard processing fees are billed separately by Stripe.

Average Rating: 4.1/5.0

Total Reviews: 9

How Do G2 Users Rate MoonClerk?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 9.0/10)
  • Payments: 5.0/10 (Category avg: 8.6/10)

Who Is the Company Behind MoonClerk?

  • Seller: MoonClerk
  • Year Founded: 2012
  • HQ Location: Greenville, SC
  • Twitter: @moonclerk
    501 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    6 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 90% Small, 10% Medium

What Are Recent G2 Reviews of MoonClerk?

What Are G2 Users Discussing About MoonClerk?

Fortifi

Fortifi is the all-in-one business software for sales, marketing, customer support and billing teams. Helping you to acquire new customers, nurture existing ones and make getting paid a breeze, Fortifi has all the tools you need to run your business, from one intelligent and user friendly platform.

Average Rating: 4.4/5.0

Total Reviews: 15

How Do G2 Users Rate Fortifi?

  • Has the product been a good partner in doing business?: 9.2/10 (Category avg: 9.0/10)

Who Is the Company Behind Fortifi?

  • Seller: Fortifi
  • Year Founded: 2014
  • HQ Location: Fareham, Hampshire
  • Twitter: @fortificloud
    268 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    3 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Consumer Services
  • Company Size: 47% Small, 40% Medium

What Do G2 Reviewers Say About Fortifi?

AI-generated summary from verified user reviews

Pros
  • Users value the all-in-one solution of Fortifi, benefiting from streamlined customer management and enhanced service delivery.
  • Users find the centralized customer data of Fortifi enhances personalized service and improves overall customer support.
  • Users appreciate the centralized customer data in Fortifi, enabling personalized service and seamless interaction management.
  • Users value the exceptional customer support from Fortifi, enabling them to provide tailored service efficiently.
  • Users appreciate the ease of use of Fortifi, benefiting from its smooth setup and user-friendly interface.
Cons
  • Users find the pricing of Fortifi to be a downside, highlighting it as a significant drawback for potential buyers.

What Are Recent G2 Reviews of Fortifi?

What Are G2 Users Discussing About Fortifi?

HappyAR

HappyAR is a seamless SaaS that quickly and easily boosts your accounts receivables work We save companies of all sizes thousands of dollar each year by optimizing the speed and efficiency of their collections methods. No more guessing if someone has received an invoice or trusting that it will be paid on time. This is a fully integrated solution that pays for itself over and over each month by preventing defaults and preserving client relationships.

Average Rating: 4.9/5.0

Total Reviews: 11

How Do G2 Users Rate HappyAR?

  • Has the product been a good partner in doing business?: 9.6/10 (Category avg: 9.0/10)
  • Accounting: 9.4/10 (Category avg: 8.7/10)
  • Payments: 9.4/10 (Category avg: 8.6/10)
  • Management: 8.9/10 (Category avg: 8.8/10)

Who Is the Company Behind HappyAR?

  • Seller: HappyAR
  • Year Founded: 2021
  • HQ Location: Alpharetta, US
  • Twitter: @HappyARteam
    4 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    1 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 55% Small, 9% Medium

What Are Recent G2 Reviews of HappyAR?

What Are G2 Users Discussing About HappyAR?

InvoiceSherpa

Enhance your cash flow by streamlining your accounting processes. InvoiceSherpa offers a sophisticated invoice reminder and collection system that efficiently follows up on overdue invoices and seamlessly integrates with all major accounting software platforms. Packed with comprehensive management features, InvoiceSherpa automates your accounts receivable, accelerating your cash flow cycle and enabling you to enhance your bottom line, business performance, and customer satisfaction.

Average Rating: 3.1/5.0

Total Reviews: 10

How Do G2 Users Rate InvoiceSherpa?

  • Has the product been a good partner in doing business?: 1.7/10 (Category avg: 9.0/10)
  • Accounting: 6.7/10 (Category avg: 8.7/10)
  • Payments: 6.7/10 (Category avg: 8.6/10)
  • Management: 5.0/10 (Category avg: 8.8/10)

Who Is the Company Behind InvoiceSherpa?

Who Uses This Product?

  • Company Size: 70% Small, 30% Medium

What Are Recent G2 Reviews of InvoiceSherpa?

What Are G2 Users Discussing About InvoiceSherpa?

BillingPlatform

BillingPlatform is an enterprise billing and revenue management software solution that automates the usage-to-cash process for organizations managing complex, multi-model pricing across subscription, usage-based, hybrid, and outcome-based arrangements. The platform is designed for mid-market and enterprise organizations in industries including software, financial services, media, healthcare, and telecommunications. It serves finance, billing operations, and IT teams that need to consolidate billing, revenue recognition, and financial management into a single configurable system without requiring custom code to adapt to their business model. Core capabilities include: - Native AI integration via MCP: includes a built-in MCP (Model Context Protocol) server that enables AI tools, including Claude, ChatGPT, and custom models, to directly read, reason about, and act on billing data. Teams can run pricing changes, forecast revenue, and govern modifications through conversation, with role-based permissions and full audit trails enforced at every step. - Billing automation: supports subscription, usage-based, hybrid, and outcome-based pricing models; handles product configuration, order processing, bill cycle execution, invoice generation, and dunning workflows - Revenue recognition: automates ASC 606 and IFRS 15 compliance through contract management, SSP determination, modification handling, and waterfall/rollforward reporting - Global operations: multi-currency, multi-language, and multi-entity support for companies operating across multiple markets and regulatory environments - Integration: connects to ERP, CRM, and financial systems through robust APIs, bulk data tools, and pre-built connectors BillingPlatform uses a metadata-driven architecture that allows teams to configure data models, workflows, UI layouts, and business rules through point-and-click tools. The platform processes billions of transactions annually for global enterprises across software, media, transportation, financial services, and healthcare sectors.

Average Rating: 4.7/5.0

Total Reviews: 9

How Do G2 Users Rate BillingPlatform?

  • Has the product been a good partner in doing business?: 8.3/10 (Category avg: 9.0/10)
  • Accounting: 9.2/10 (Category avg: 8.7/10)
  • Payments: 10.0/10 (Category avg: 8.6/10)
  • Management: 8.3/10 (Category avg: 8.8/10)

Who Is the Company Behind BillingPlatform?

  • Seller: BillingPlatform
  • Company Website:
  • Year Founded: 2012
  • HQ Location: Englewood, US
  • Twitter: @BillingPlatform
    576 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    277 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 60% Large, 40% Small

What Do G2 Reviewers Say About BillingPlatform?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the flexibility in handling complex billing scenarios offered by BillingPlatform's strong mediation and collector capabilities.
  • Users value the flexibility in managing complex billing scenarios with BillingPlatform's robust data management capabilities.
  • Users value the flexibility of BillingPlatform in handling complex billing scenarios effectively and efficiently.
  • Users commend the flexible invoicing capabilities of BillingPlatform, adeptly handling complex billing scenarios with ease.
  • Users value the flexibility in complex billing scenarios, benefiting from strong mediation and data collection capabilities.
Cons
  • Users find the complex implementation of BillingPlatform to be time-consuming and challenging due to slow non-production environments.
  • Users find the error handling inadequate, leading to prolonged development cycles and challenging troubleshooting experiences.
  • Users experience slow performance in non-production environments, leading to prolonged development and configuration cycles.
  • Users find the time-consuming development and configuration cycles frustrating, impacting efficiency during the billing process.

What Are Recent G2 Reviews of BillingPlatform?

What Are G2 Users Discussing About BillingPlatform?

InvoiceASAP

InvoiceASAP provides easy mobile invoicing and mobile payments, so busy professionals can create, pay, and send estimates, orders and invoices on the go

Average Rating: 4.4/5.0

Total Reviews: 11

How Do G2 Users Rate InvoiceASAP?

  • Has the product been a good partner in doing business?: 10.0/10 (Category avg: 9.0/10)
  • Accounting: 9.6/10 (Category avg: 8.7/10)
  • Payments: 8.9/10 (Category avg: 8.6/10)
  • Management: 8.9/10 (Category avg: 8.8/10)

Who Is the Company Behind InvoiceASAP?

  • Seller: InvoiceASAP
  • Year Founded: 2010
  • HQ Location: Oakland, California
  • Twitter: @invoiceASAP
    418 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    11 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 55% Small, 27% Large

What Are Recent G2 Reviews of InvoiceASAP?

What Are G2 Users Discussing About InvoiceASAP?

Nathan Calabrese
NC
Researched and written by Nathan Calabrese
Updated April 9, 2026