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Finance & Accounting

Browse curated open source projects in this category.

25 projects
OpenBB icon

OpenBB

Open

Integrate, visualize, and analyze data in one place with OpenBB's AI-driven platform for financial research and analytics.

16/05/2026
6,799
67,614
Hyperswitch icon

Hyperswitch

Open

A unified payment infrastructure that connects multiple payment processors through a single API integration, enabling global payment processing

15/05/2026
4,682
42,697
ERPNext icon

ERPNext

Open

Open-source ERP solution offering modules for accounting, inventory, HR, CRM, and more. Customizable and scalable for businesses of all sizes.

15/05/2026
11,247
33,883
Midday icon

Midday

Open

All-in-one tool for freelancers and small businesses to manage finances, track time, store files, and send invoices efficiently.

07/05/2026
1,468
14,250
Polar icon

Polar

Open

Comprehensive payment solution with built-in tax handling, automated benefits, and seamless integrations for digital product and SaaS businesses.

15/05/2026
715
9,848
Akaunting icon

Akaunting

Open

Cloud-based accounting software offering invoicing, expense tracking, and financial reporting for entrepreneurs and small businesses.

15/05/2026
2,913
9,801
featul icon

featul

Ad

Collect feedback, plan with roadmaps, and share updates all in a simple, privacy-first platform.

Visit featul
Invoice Ninja icon

Invoice Ninja

Open

Free invoicing software for freelancers and small businesses. Create professional invoices, track expenses, accept online payments, and manage projects without hidden fees.

16/05/2026
2,636
9,736
Lago icon

Lago

Open

Open-source billing system that handles metering, usage-based pricing, and invoicing at scale. Perfect for AI, cloud, and API companies needing flexible monetization.

15/05/2026
603
9,671
Gumroad icon

Gumroad

Open

A digital marketplace platform where creators can sell digital products, from courses to software, with built-in payment processing and content delivery.

16/05/2026
1,917
9,081
Crater icon

Crater

Open

Crater offers AI-driven invoicing workflows, payments, and working capital tools to enhance your platform with minimal technical effort.

10/08/2024
1,688
8,284
Expensify icon

Expensify

Open

Automate expense reporting, reimbursements, and corporate card management with real-time data sync and powerful integrations.

16/05/2026
3,794
4,852
Kimai icon

Kimai

Open

Open-source time tracking solution for businesses of all sizes. Manage projects, track billable hours, and generate insightful reports.

14/05/2026
778
4,651
Frappe Books icon

Frappe Books

Open

A user-friendly desktop accounting software that helps businesses manage invoices, track expenses, and handle bookkeeping with a modern interface.

10/04/2026
1,079
4,637
Bigcapital icon

Bigcapital

Open

Cloud-based accounting software that streamlines bookkeeping, generates intelligent reports, and offers multi-currency support for efficient financial management.

15/05/2026
440
3,658
Flexprice icon

Flexprice

Open

A flexible billing platform that handles usage-based metering, credit management, and subscription billing, giving developers full control over pricing models.

15/05/2026
159
3,559
Spliit icon

Spliit

Open

A user-friendly app for tracking shared expenses, settling debts, and managing group finances with ease and transparency.

06/12/2025
427
2,689
Autumn icon

Autumn

Open

Simplify Stripe integration for AI startups with 3 functions, 0 webhooks. Build pricing plans in 30 minutes with usage tracking, credits, and feature controls.

16/05/2026
216
2,545
OpenMeter icon

OpenMeter

Open

Open source billing platform that turns events into revenue with real-time metering, usage limits, and flexible pricing. Integrates with Stripe, CRMs, and payment providers.

15/05/2026
173
1,969
Paymenter icon

Paymenter

Open

Automate subscriptions and manage payments with a flexible, open-source billing system designed specifically for hosting providers.

15/05/2026
376
1,708
Meteroid icon

Meteroid

Open

Open-source pricing and billing platform that helps SaaS companies launch, test, and scale complex billing models with ease. Features metering, invoicing, and real-time data.

15/05/2026
53
1,072
Captable icon

Captable

Open

Comprehensive cap table software for startups to manage equity, track ownership, and facilitate fundraising with real-time insights and compliance tools.

04/06/2025
170
805
BillaBear icon

BillaBear

Open

BillaBear offers powerful tax management, automated workflows, and comprehensive subscription control for businesses using Stripe

08/05/2026
53
747
Formance icon

Formance

Open

Build custom financial flows and integrate with any provider using Formance's agnostic platform

31/03/2026
65
507
UniBee icon

UniBee

Open

Replace expensive billing solutions with open-source software. Automate subscriptions, accept multiple payments including crypto, and gain real-time revenue insights.

23/02/2026
33
197
Suprascribe icon

Suprascribe

Free subscription tracker that automatically scans your email to find recurring charges. Privacy-focused discovery with complete spending overview and management tools.

12/05/2026
0
2