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Business Finance

Top 10 Best Open Invoice Software of 2026

Discover the top 10 best open invoice software to streamline billing. Compare features, find the best fit, and start efficiently today.

Gitnux Team

Feb 11, 2026

10 tools comparedExpert reviewed
Independent evaluation · Unbiased commentary · Updated regularly
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Effective management of open invoices is pivotal for maintaining healthy cash flow and streamlining financial operations, and with a diverse array of tools available—ranging from user-friendly cloud platforms to scalable enterprise solutions—choosing the right software can make a significant difference in efficiency and accuracy.

Quick Overview

  1. 1#1: QuickBooks Online - Cloud-based accounting software that automates invoicing, tracks open invoices with aging reports, and sends payment reminders.
  2. 2#2: Xero - User-friendly online accounting platform for managing invoices, tracking receivables, and generating open invoice reports.
  3. 3#3: Zoho Books - Affordable accounting solution with advanced invoicing, multi-currency support, and detailed open invoice tracking.
  4. 4#4: FreshBooks - Intuitive invoicing tool designed for small businesses to create, track, and chase open invoices effortlessly.
  5. 5#5: Bill.com - Accounts payable and receivable automation software focused on approving, paying, and managing open invoices.
  6. 6#6: Wave - Free invoicing and accounting app that helps track open invoices and payments without subscription costs.
  7. 7#7: Sage Intacct - Scalable cloud ERP for mid-market businesses with robust AR management and open invoice analytics.
  8. 8#8: Invoice Ninja - Open-source invoicing platform for self-hosted invoice creation, recurring billing, and open invoice monitoring.
  9. 9#9: Harvest - Time tracking and invoicing software that converts expenses into invoices and tracks outstanding payments.
  10. 10#10: ZipBooks - Modern accounting tool offering free invoicing, automated reminders, and real-time open invoice dashboards.

These tools were selected and ranked based on factors like automation capabilities, clarity of open invoice tracking, ease of use, and overall value, ensuring they cater to businesses of varied sizes and needs.

Comparison Table

This comparison table features leading open invoice software tools, such as QuickBooks Online, Xero, Zoho Books, FreshBooks, Bill.com, and more; it helps readers identify key features, pricing models, and ideal use cases to select the right solution for their invoicing needs.

Cloud-based accounting software that automates invoicing, tracks open invoices with aging reports, and sends payment reminders.

Features
9.8/10
Ease
9.2/10
Value
9.0/10
2Xero logo9.2/10

User-friendly online accounting platform for managing invoices, tracking receivables, and generating open invoice reports.

Features
9.4/10
Ease
9.1/10
Value
8.9/10
3Zoho Books logo8.7/10

Affordable accounting solution with advanced invoicing, multi-currency support, and detailed open invoice tracking.

Features
9.1/10
Ease
8.9/10
Value
8.5/10
4FreshBooks logo8.3/10

Intuitive invoicing tool designed for small businesses to create, track, and chase open invoices effortlessly.

Features
8.1/10
Ease
9.4/10
Value
7.6/10
5Bill.com logo8.5/10

Accounts payable and receivable automation software focused on approving, paying, and managing open invoices.

Features
9.0/10
Ease
8.2/10
Value
8.0/10
6Wave logo8.7/10

Free invoicing and accounting app that helps track open invoices and payments without subscription costs.

Features
8.2/10
Ease
9.4/10
Value
9.8/10

Scalable cloud ERP for mid-market businesses with robust AR management and open invoice analytics.

Features
9.1/10
Ease
7.4/10
Value
7.6/10

Open-source invoicing platform for self-hosted invoice creation, recurring billing, and open invoice monitoring.

Features
8.5/10
Ease
7.8/10
Value
9.4/10
9Harvest logo8.7/10

Time tracking and invoicing software that converts expenses into invoices and tracks outstanding payments.

Features
9.0/10
Ease
9.2/10
Value
8.0/10
10ZipBooks logo8.1/10

Modern accounting tool offering free invoicing, automated reminders, and real-time open invoice dashboards.

Features
7.9/10
Ease
8.6/10
Value
9.0/10
1
QuickBooks Online logo

QuickBooks Online

enterprise

Cloud-based accounting software that automates invoicing, tracks open invoices with aging reports, and sends payment reminders.

Overall Rating9.5/10
Features
9.8/10
Ease of Use
9.2/10
Value
9.0/10
Standout Feature

Automated overdue invoice reminders and intelligent AR aging reports with drill-down analytics

QuickBooks Online is a leading cloud-based accounting software that provides comprehensive tools for managing open invoices, including creation, tracking, and collection. It offers automated reminders for overdue payments, detailed accounts receivable aging reports, and seamless integration with payment processors to accelerate collections. With real-time dashboards and customizable workflows, it helps businesses maintain healthy cash flow by monitoring outstanding invoices efficiently.

Pros

  • Robust open invoice tracking with aging reports and automated payment reminders
  • Seamless integration with payment gateways for faster collections
  • Mobile app and real-time cloud access for remote management

Cons

  • Higher-tier plans required for advanced features like project tracking
  • Pricing can be steep for very small businesses or solopreneurs
  • Initial learning curve for users new to accounting software

Best For

Small to medium-sized businesses seeking integrated accounting with powerful open invoice management and scalable features.

Pricing

Starts at $30/month (Simple Start) up to $200/month (Advanced), with annual discounts and a free trial available.

Visit QuickBooks Onlinequickbooks.intuit.com
2
Xero logo

Xero

enterprise

User-friendly online accounting platform for managing invoices, tracking receivables, and generating open invoice reports.

Overall Rating9.2/10
Features
9.4/10
Ease of Use
9.1/10
Value
8.9/10
Standout Feature

Bank feed integration that automatically matches incoming payments to open invoices in real-time

Xero is a cloud-based accounting platform designed for small to medium businesses, offering robust invoicing tools to create, send, and track invoices seamlessly. It excels in open invoice management with features like automated reminders, payment tracking, and aging reports to monitor accounts receivable effectively. Integration with bank feeds and payment gateways ensures real-time updates and faster collections.

Pros

  • Comprehensive invoicing with templates, recurring billing, and multi-currency support
  • Automated overdue reminders and payment chasing workflows
  • Real-time AR reports and bank reconciliation for efficient open invoice tracking

Cons

  • Pricing scales up quickly for growing businesses with add-ons
  • Steeper learning curve for non-accountants on advanced reporting
  • Limited free tier; requires subscription for full invoicing features

Best For

Small to medium businesses needing integrated accounting with strong open invoice management and automation.

Pricing

Starts at $15/month (Early plan) up to $78/month (Ultimate plan), with annual discounts available.

Visit Xeroxero.com
3
Zoho Books logo

Zoho Books

specialized

Affordable accounting solution with advanced invoicing, multi-currency support, and detailed open invoice tracking.

Overall Rating8.7/10
Features
9.1/10
Ease of Use
8.9/10
Value
8.5/10
Standout Feature

Self-serve client portal allowing customers to view, approve, and pay open invoices directly

Zoho Books is a cloud-based accounting platform with robust invoicing tools designed for small to medium businesses, enabling the creation, customization, and tracking of open invoices. It supports partial payments, automated reminders, overdue alerts, and detailed aging reports to manage unpaid invoices efficiently. The software integrates with payment gateways for seamless collections and offers multi-currency support for global operations.

Pros

  • Comprehensive invoice tracking with real-time status updates and aging reports
  • Automated reminders and partial payment handling streamline collections
  • Seamless integrations with payment processors like Stripe and PayPal

Cons

  • Higher-tier plans required for advanced features like multi-user access
  • Steeper learning curve for non-accounting users due to full-suite depth
  • Limited free plan scalability for growing businesses

Best For

Small to medium-sized businesses needing integrated accounting with strong open invoice management.

Pricing

Free for businesses under $50K revenue; paid plans start at $20/org/month (Standard, billed annually), up to $300 for Elite.

Visit Zoho Bookszoho.com/books
4
FreshBooks logo

FreshBooks

specialized

Intuitive invoicing tool designed for small businesses to create, track, and chase open invoices effortlessly.

Overall Rating8.3/10
Features
8.1/10
Ease of Use
9.4/10
Value
7.6/10
Standout Feature

Automated late payment reminders and invoice scheduling that proactively manage open balances

FreshBooks is a cloud-based accounting platform tailored for small businesses and freelancers, with powerful invoicing tools that allow users to create, send, and track professional invoices effortlessly. It provides detailed visibility into open invoices via a centralized dashboard, including aging reports, overdue reminders, and automated payment chases to optimize cash flow. Beyond invoicing, it integrates time tracking, expense logging, and client management for a holistic financial overview.

Pros

  • Intuitive interface ideal for non-accountants
  • Robust open invoice tracking with aging and reminders
  • Seamless online payment integrations (Stripe, PayPal)

Cons

  • Pricing escalates quickly for teams or advanced needs
  • Lacks deep accounting features like double-entry bookkeeping
  • Limited customization in reporting for complex invoice scenarios

Best For

Freelancers and small service-based businesses seeking simple, visually appealing open invoice management without full-scale accounting complexity.

Pricing

Lite ($19/mo), Plus ($33/mo), Premium ($60/mo), Select (custom); annual billing discounts available.

Visit FreshBooksfreshbooks.com
5
Bill.com logo

Bill.com

enterprise

Accounts payable and receivable automation software focused on approving, paying, and managing open invoices.

Overall Rating8.5/10
Features
9.0/10
Ease of Use
8.2/10
Value
8.0/10
Standout Feature

Automated payment reminders and collections workflows directly tied to open invoices

Bill.com, now known as BILL, is a cloud-based financial automation platform specializing in accounts payable (AP) and accounts receivable (AR) processes. It enables businesses to create, send, track, and manage invoices with real-time visibility into open invoices, aging reports, and payment status. The software automates reminders for overdue payments, approvals, and integrates seamlessly with accounting tools like QuickBooks and Xero, making it efficient for handling open invoice workflows.

Pros

  • Robust open invoice tracking with aging reports and automated reminders
  • Seamless integrations with major accounting software
  • Flexible payment options including ACH, checks, and virtual cards

Cons

  • Higher pricing tiers needed for advanced AR features
  • Steeper learning curve for complex workflows
  • Customer support response times can vary

Best For

Small to mid-sized businesses seeking integrated AP/AR automation with strong open invoice management.

Pricing

Starts at $45/user/month for Essentials plan; Team ($55/user/month) and Corporate ($99/user/month) offer more advanced invoicing features.

6
Wave logo

Wave

other

Free invoicing and accounting app that helps track open invoices and payments without subscription costs.

Overall Rating8.7/10
Features
8.2/10
Ease of Use
9.4/10
Value
9.8/10
Standout Feature

Unlimited free invoices with no caps on customers or usage, making it ideal for growing small operations without upfront costs

Wave is a free cloud-based accounting and invoicing platform tailored for small businesses, freelancers, and solopreneurs. It enables users to create customizable professional invoices, send them via email, track payment status, and accept online payments through integrated gateways. Beyond invoicing, it offers accounting integration, receipt scanning, and basic reporting to manage open invoices efficiently.

Pros

  • Completely free for unlimited invoicing and customers
  • Intuitive drag-and-drop invoice builder with templates
  • Real-time tracking of open invoices and payment reminders

Cons

  • Payment processing fees (2.9% + $0.60 per transaction)
  • Limited advanced reporting and automation features
  • Email-only customer support with no phone option

Best For

Freelancers and very small businesses seeking a no-cost, straightforward solution for creating and managing open invoices.

Pricing

Free for core invoicing and accounting; charges transaction fees for payments (2.9% + $0.60/credit card, 1% + $0.60/ACH).

Visit Wavewaveapps.com
7
Sage Intacct logo

Sage Intacct

enterprise

Scalable cloud ERP for mid-market businesses with robust AR management and open invoice analytics.

Overall Rating8.2/10
Features
9.1/10
Ease of Use
7.4/10
Value
7.6/10
Standout Feature

Multi-dimensional AR tracking that allows slicing open invoices by dimensions like location, project, or department for precise financial analysis.

Sage Intacct is a cloud-based financial management platform offering robust accounts receivable (AR) capabilities tailored for managing open invoices, including automated invoicing, aging reports, and payment application. It provides real-time visibility into outstanding receivables, customer balances, and cash flow forecasting through customizable dashboards and multi-dimensional reporting. Designed for mid-market to enterprise businesses, it scales with complex financial operations while integrating seamlessly with CRM and ERP systems.

Pros

  • Advanced AR automation with AI-driven collections insights
  • Multi-entity and multi-currency support for global open invoice tracking
  • Real-time dashboards and customizable reports for AR visibility

Cons

  • Steep learning curve and complex initial setup
  • High pricing that may not suit small businesses
  • Limited out-of-the-box templates for simple open invoice workflows

Best For

Mid-sized to enterprise companies with multi-location operations needing scalable open invoice management and financial consolidation.

Pricing

Custom subscription pricing starting at around $15,000 annually, scaling based on modules, users, and entities.

Visit Sage Intacctsageintacct.com
8
Invoice Ninja logo

Invoice Ninja

specialized

Open-source invoicing platform for self-hosted invoice creation, recurring billing, and open invoice monitoring.

Overall Rating8.2/10
Features
8.5/10
Ease of Use
7.8/10
Value
9.4/10
Standout Feature

Open-source self-hosting for complete data ownership and zero core licensing costs

Invoice Ninja is an open-source invoicing software designed for freelancers, small businesses, and agencies to create, send, and manage professional invoices, quotes, and payments. It offers both self-hosted (free) and cloud-hosted options, with features like recurring billing, expense tracking, time logging, and client portals. The platform supports multiple payment gateways including Stripe and PayPal, along with customizable templates and reporting tools for efficient financial management.

Pros

  • Fully open-source with free self-hosted option for unlimited use
  • Extensive integrations with payment processors and accounting tools
  • Multi-company support and customizable invoice templates

Cons

  • Self-hosting requires technical setup and server management
  • Cloud plans limit clients on lower tiers and can become costly
  • UI feels somewhat dated despite recent updates

Best For

Freelancers and small businesses wanting a customizable, self-hosted invoicing solution without ongoing vendor fees.

Pricing

Free self-hosted (open-source); cloud-hosted plans start at $14/mo (Pro, 50 clients), $30/mo (Enterprise, unlimited clients).

Visit Invoice Ninjainvoiceninja.com
9
Harvest logo

Harvest

specialized

Time tracking and invoicing software that converts expenses into invoices and tracks outstanding payments.

Overall Rating8.7/10
Features
9.0/10
Ease of Use
9.2/10
Value
8.0/10
Standout Feature

Automatic invoice generation directly from tracked time entries

Harvest is a user-friendly time tracking and invoicing platform tailored for freelancers, agencies, and small teams. It allows users to log billable hours on projects, automatically generate professional invoices from time entries, and track payments with reminders for open invoices. The software also supports expense tracking, detailed reporting, and integrations with tools like QuickBooks, Stripe, and PayPal, making it a solid solution for service-based billing.

Pros

  • Seamless integration of time tracking with invoicing
  • Intuitive and clean interface with mobile app support
  • Robust reporting and payment reminders for open invoices

Cons

  • Per-user pricing can become expensive for larger teams
  • Limited advanced accounting features like inventory management
  • Invoicing requires the Pro plan; basic time tracking is free but limited

Best For

Freelancers and small agencies that bill hourly and need straightforward open invoice management tied to time tracking.

Pricing

Time tracking free (basic); Pro plan $12/user/month (billed annually) or $17 monthly for unlimited invoicing and advanced features.

Visit Harvestgetharvest.com
10
ZipBooks logo

ZipBooks

other

Modern accounting tool offering free invoicing, automated reminders, and real-time open invoice dashboards.

Overall Rating8.1/10
Features
7.9/10
Ease of Use
8.6/10
Value
9.0/10
Standout Feature

Oliver AI Bookkeeper for automated categorization and reconciliation of open invoices and expenses

ZipBooks is a cloud-based accounting platform designed for small businesses, offering robust invoicing tools to create, send, and track open invoices efficiently. It includes features like recurring billing, payment reminders, and accounts receivable aging reports to manage unpaid invoices effectively. Beyond invoicing, it provides time tracking, expense management, and automated bookkeeping to streamline financial operations.

Pros

  • Free starter plan with core invoicing features
  • Intuitive interface for quick invoice creation and tracking
  • Integrated time tracking and profitability insights

Cons

  • Limited advanced reporting in lower tiers
  • Fewer integrations compared to enterprise competitors
  • Customer support can be slower on free plan

Best For

Freelancers and small businesses seeking affordable, user-friendly open invoice management with basic accounting.

Pricing

Free Starter plan; Smarter at $15/user/month; Sophisticated at $35/user/month; Accountant at $50/user/month (billed annually).

Visit ZipBookszipbooks.com

Conclusion

The top 10 open invoice tools offer diverse strengths, with the top three—QuickBooks Online, Xero, and Zoho Books—standing out as leaders. QuickBooks Online excels with robust automation and aging report tracking, making it a top choice for many. Xero impresses with its user-friendly design, while Zoho Books offers affordability and multi-currency support, each a strong alternative for specific needs.

QuickBooks Online logo
Our Top Pick
QuickBooks Online

Explore QuickBooks Online first to leverage its streamlined invoicing and payment tracking, or consider Xero or Zoho Books if your focus leans toward user-friendliness or cost-effectiveness, and find the best fit for your workflow.