Top Open Source Expense Management Tools in 2026
A curated collection of the 14 best free and open-source Expense Management tools in 2026. Compare features, GitHub stars, tech stacks, and self-hosted software.
YAFFA
Privacy-first self-hosted personal finance tracker
Stars108Last commit16d agoLicenseMIT
OctoBot
Automated crypto trading bot for exchanges
Stars6,473Last commit27d agoLicenseGPL-3.0Wealthfolio
Private open-source investment tracker
Stars8,738Last commit11d agoLicenseAGPL-3.0
UniBee
All-in-one subscription billing platform
Stars231Last commit8mo agoLicenseAGPL-3.0
Spliit
Open source expense splitter for friends and family
Stars2,882Last commit18d agoLicenseMITMidday
All-in-one business stack for modern founders
Stars14,927Last commit2mo agoLicenseAGPL-3.0Invoice Ninja
Free invoicing software for freelancers and small businesses. Create professional invoices, track expenses, accept online payments, and manage projects without hidden fees.
Stars10,030Last commit26d agoLicenseOpen Source
Horilla
Open-source HRMS with payroll & attendance
Stars1,343Last commit12d agoLicenseLGPL-2.1Frappe Books
Free open-source desktop accounting software
Stars4,904Last commit6mo agoLicenseAGPL-3.0Expensify
Automate expense reporting, reimbursements, and corporate card management with real-time data sync and powerful integrations.
Stars5,013Last commit10d agoLicenseMIT
Dittofeed
Open-source customer engagement platform
Stars2,914Last commit5mo agoLicenseMITBigcapital
Modern open-source accounting software
Stars3,864Last commit10d agoLicenseAGPL-3.0
Akaunting
Open-source accounting software for small businesses
Stars10,094Last commit11d agoLicenseOpen Source
0 Finance
CLI-first banking for agents
Stars249Last commit5mo agoLicenseMIT
