money, budgeting, and management tool

Firefly III - Firefly III is a modern financial manager. It helps you to keep track of your money and make budget forecasts. It supports credit cards, has an advanced rule engine and can import data from many banks. AGPL-3.0 PHP/Docker

A free and open source personal finance manager

Actual Budget is a super fast and privacy-focused app for managing your finances. At its heart is the well proven and much loved Envelope Budgeting methodology.

BTCPay Server - A self-hosted Bitcoin and other cryptocurrencies payment processor. MIT C#

HyperSwitch - HyperSwitch is an Open Source Financial Switch to make payments Fast, Reliable and Affordable. It lets you connect with multiple payment processors and route traffic effortlessly, all with a single API integration. Apache-2.0 Docker/Rust

OctoBot - Open-source cryptocurrency trading bot. GPL-3.0 Python/Docker

Lago - Open-source metering and usage-based billing. AGPL-3.0 Docker

Ghostfolio - Wealth management software to keep track of stocks, ETFs and cryptocurrencies. AGPL-3.0 Docker/Nodejs

Ghostfolio is a privacy-first, open source dashboard for your personal finances. Break down your asset allocation, know your net worth and make solid, data-driven investment decisions.

DePay - Accept Web3 Payments directly into your wallet. Peer-to-peer, free, self-hosted & open-source. MIT Nodejs

IHateMoney - Manage your shared expenses, easily. BSD-3-Clause Docker/Python

Kresus - Open source personal finance manager. MIT Nodejs/Docker

FOSSBilling - Free and open source hosting and billing automation. Integrates with WHM, CWP, cPanel and HestiaCP. Full API and easily extensible. Apache-2.0 PHP/Docker

Invoice Ninja - Powerful tool to invoice clients online. AAL PHP/Docker/K8S

Bitcart - A self-hosted cryptocurrencies payment processor and development platform. MIT Docker/Python/Nodejs

Kill Bill - Open-Source Subscription Billing & Payments Platform. Have access to real-time analytics and financial reports. Apache-2.0 Java/Docker

Bigcapital - A self-hosted financial accounting and inventory management software for small to medium businesses. AGPL-3.0 Docker

Budget Zen - End-to-end encrypted and simple expense manager. AGPL-3.0 Deno

Galette - Galette is a membership management web application towards non profit organizations. GPL-3.0 PHP

GRR - Assets management and booking for small/medium companies. GPL-2.0 PHP

Hub20 - A self-hosted payment processor for Ethereum and ERC20 Tokens. AGPL-3.0 Docker/Python

REI3 - Open source, expandable Business Management Software. Manage tasks, time, assets and much more. MIT Go

SolidInvoice - Open source invoicing and quote application. MIT PHP

Investment Research for Everyone, Everywhere.

AirBadge connects Auth.js with Stripe . Test your next SaaS idea quickly. It's free and open source.

Actual - Actual is a local-first personal finance tool based on zero-sum budgeting. It support synchronization across devices, custom rules, manual transaction importing (from QIF, OFX, and QFX files), and optional automatic synchronization with many banks. MIT Nodejs/Docker

Family Accounting Tool - Web-based finance management tool for partners with partially shared expenses. Apache-2.0 Scala

Fava - Fava is the web frontend of Beancount, a text based double-entry accounting system. MIT Python

InvoicePlane - Manage quotes, invoices, payments and customers for your small business. MIT PHP

OnTrack - A simple app to track spend and set goals. MIT Ruby/Nodejs

OpenBudgeteer - A budgeting app based on the Bucket Budgeting Principle. MIT Docker/C#