The best open source alternative to Maybe is Actual. If that doesn't suit you, we've compiled a ranked list of other open source Maybe alternatives to help you find a suitable replacement. Other interesting open source alternatives to Maybe are: Firefly III, Sure.am, Ghostfolio, and Wealthfolio.
Maybe alternatives are mainly Budgeting Apps but may also be Investment Tracking Tools or Finance & Fintech Tools. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Maybe.
Privacy-focused personal finance app using envelope budgeting, multi-device sync, optional end-to-end encryption, and bank sync for US, EU, and UK users.

Actual Budget is a personal finance management tool built around envelope budgeting, the method where you assign every dollar you actually have to a specific category before spending it. No projected income, no made-up numbers. You budget what's in your accounts right now, which keeps your plan grounded in reality.
It's local-first by design. Your data lives on your device, and the app works fully offline. Sync happens in the background across as many devices as you want, but a dropped connection doesn't stop you from using it. For people who've grown uncomfortable with cloud-first finance tools, that's a meaningful distinction.
Key capabilities:
The interface is intentionally minimal and fast. Categorizing transactions, reviewing spending, and moving money between envelopes are all optimized to take as few taps or clicks as possible. Dark mode and system-level theming are built in.
Actual is self-hosted. You run the sync server yourself, which means your financial data never touches a third-party service unless you choose bank sync. Among budgeting apps that offer this level of privacy, few match its combination of polished UI and full local control.
Looking for open source alternatives to other popular services? Check out other posts in the alternatives series and openalternative.co, a directory of open source software with filters for tags and alternatives for easy browsing and discovery.
Track transactions, budgets, and accounts with a double-entry system, multi-currency support, rule engine, and REST API. Fully self-hostable.

Firefly III is a self-hosted personal finance manager built around double-entry bookkeeping. It's designed for people who want full control over their financial data without relying on a third-party service. Every transaction is yours, stored on your own server.
At its core, it handles transaction management across multiple currencies. You can record income, expenses, and transfers, then organize them using a combination of budgets, categories, and tags. These aren't mutually exclusive. Use all three together, or just the one that fits how you think about money.
Budgets support per-currency limits, so you can track household spending in your local currency alongside any other currency you deal with regularly.
The rule engine is one of its more practical features. You can write rules that automatically clean up imported bank data, expand shorthand descriptions into full transaction details, or apply categories based on patterns. Anyone who's wrestled with a bank's CSV export will appreciate this.
Data import is handled through a dedicated import tool that pulls in transactions from external sources, making it easier to migrate existing data or keep records in sync.
Reporting covers expenses broken down by week, month, or year. You can also run account audits, compare budgets side by side, or analyze spending by tag. The reports are detailed enough to spot trends without requiring a separate spreadsheet.
The JSON REST API exposes most of Firefly III's functionality to external apps. Mobile clients, scripts, and integrations can create transactions, manage categories, and pull chart data programmatically.
Compared to tools like Actual or ezBookkeeping, Firefly III leans toward users who want a more structured, accounting-style approach. The double-entry system adds rigor that simpler budgeting apps skip. It's a good fit for anyone who wants their personal finances managed with the same discipline as a small business ledger.
An all-in-one personal finance platform. Track, optimize, grow, and manage your money through every stage of life.

Take control of your finances with a single, unified view of your money. Connect bank accounts, cards, investments, and even custom assets, or add everything manually when you prefer full control. Powerful transaction tools let you create, edit, tag, and link income, expenses, and transfers so your records always stay accurate and organized.
Key features:
Open-source and self-hostable, it offers transparent, privacy-first personal finance management built in public.
Open-source wealth management software for tracking stocks, ETFs, and cryptocurrencies across multiple portfolios

Ghostfolio is a powerful, open-source wealth management platform designed to help you take control of your financial future. With its intuitive interface and comprehensive features, Ghostfolio empowers investors of all levels to track, analyze, and optimize their investment portfolios with ease.
Key benefits of Ghostfolio include:
Whether you're a seasoned investor or just starting your financial journey, Ghostfolio provides the tools and insights you need to make smarter investment choices and work towards your financial goals. Take charge of your wealth management today with this powerful, community-driven platform.
Wealthfolio is a simple, secure desktop app for tracking investments and managing your wealth without compromising data privacy.

Wealthfolio is an open-source desktop application designed for individuals who want to take control of their financial future without compromising on data privacy. This powerful yet user-friendly tool keeps your sensitive financial information secure on your local machine, eliminating the need for cloud storage or subscriptions.
Key Features:
Why Choose Wealthfolio?
Wealthfolio empowers you to make informed financial decisions by providing a clear, comprehensive view of your investments and savings. Whether you're planning for retirement, saving for a major purchase, or simply want to grow your wealth, Wealthfolio gives you the tools you need to succeed.
Take charge of your financial future today with Wealthfolio – where simplicity meets security in personal finance management.
A privacy-first personal finance app with two-level accounts, multi-currency support, AI receipt recognition, and broad data import from formats like GnuCash and Firefly III.

ezBookkeeping is a self-hosted personal finance app built for people who want full control over their financial data without relying on cloud services like Mint. It's lightweight enough to run on a Raspberry Pi or any low-resource device, and it works across Windows, macOS, and Linux.
The bookkeeping features go well beyond basic income and expense tracking:
AI features stand out here. Receipt image recognition can parse a photo and populate transaction fields. There's also MCP (Model Context Protocol) support, which means it can integrate with AI agents and external tooling in ways most personal finance apps don't attempt.
The interface is optimized for both mobile and desktop, with PWA support for a near-native mobile experience and a dark mode option. Security is taken seriously: two-factor authentication, OIDC external auth, WebAuthn application lock, and login rate limiting are all included.
Multi-currency support comes with automatic exchange rate updates from multiple sources. Multi-timezone and custom date/number formats make it genuinely usable internationally.
Data portability is broad. You can import from CSV, OFX, QIF, GnuCash, Firefly III, Beancount, Camt.052, MT940, and more. That range makes migrating from another tool straightforward rather than painful.
Storage options include SQLite for simple single-user setups, or MySQL and PostgreSQL for anything more demanding.
Looking for open source alternatives to other popular services? Check out other posts in the alternatives series and openalternative.co, a directory of open source software with filters for tags and alternatives for easy browsing and discovery.
Self-hosted alternative to Mint and YNAB for budgeting and building wealth while maintaining full control of your financial data.

Financial Freedom is an open-source personal finance management tool designed to give users complete control over their financial data. Key features include:
The tech stack includes:
Financial Freedom is being built in public, with regular updates shared on social media. The project encourages community involvement through:
By choosing Financial Freedom, users can budget, track expenses, and work towards financial goals without sacrificing data privacy or ownership.
Manage your money confidently with monetr, putting aside what you need and spending what you want

Monetr is a powerful personal finance tool designed to help you take control of your finances on a paycheck-by-paycheck basis. With monetr, you can:
monetr offers a user-friendly interface that allows you to visualize your financial situation clearly. Whether you're looking to build an emergency fund, save for a major purchase, or simply gain better control over your day-to-day spending, monetr provides the tools and insights you need.
Key features include:
With monetr, you can take the guesswork out of personal finance and make informed decisions about your money. Start your journey to financial confidence today!
YAFFA is a powerful, open-source budget app for managing expenses, budgets, and investments with secure self-hosting.

YAFFA (Yet Another Free Finance Application) is a robust, open-source personal finance solution designed for individuals who value privacy and long-term financial planning.
Key features:
YAFFA empowers users to take control of their financial future without compromising on data privacy. Whether you're a budgeting novice or a seasoned investor, YAFFA provides the tools you need to make informed financial decisions and work towards your long-term goals.
Get started with YAFFA today and experience the freedom of managing your finances on your own terms, with no subscription fees or data sharing concerns.