If you pay for Monarch Money or Quicken, you are making two separate decisions: paying for the software, and handing your complete financial picture to a company whose business runs on that data. Maybe separates those decisions. The full codebase is available at github.com/maybe-finance/maybe, licensed under AGPL (a standard open-source license that requires anyone redistributing the code to also share it), and it runs entirely on your own server.
The backstory is worth understanding: Maybe originally launched as a $500-per-year commercial SaaS (a subscription software service). The team shut it down, open-sourced the entire codebase in early 2024, and ran it as a community project until July 2025, when they archived the repo at version 0.6.0 while pivoting the company to B2B (business-to-business) financial software. That final release is fully functional. Over 54,000 people have starred the repository, and it remains self-hostable today exactly as released.
| Fact | Value |
|---|---|
| What it is | A self-hosted personal finance dashboard: net worth, budgets, transactions, investments |
| Built by | Maybe Finance, Inc. (now pivoted; repo archived July 2025) |
| License | AGPL-3.0 (open-source license) |
| Platforms | Self-hosted via Docker Compose on any Linux server, Mac, or Windows machine |
| Requires | Docker (a tool for running apps in self-contained containers) plus an internet connection for initial setup |
| Install method | Docker Compose with a four-step setup; about 15 minutes |
| Verdict | Solid replacement for Monarch Money or Quicken if you want full data ownership; no active maintainer, so treat it as finished software |
What Maybe actually is
Maybe is a personal finance operating system. The core idea is that all of your financial accounts (checking, savings, credit cards, loans, investments, crypto) appear in one dashboard on a server you control. No company has access to your balance sheet unless you choose to use the optional AI chat feature.
The app is built on Ruby on Rails (a web application framework) backed by PostgreSQL (the database that stores all your financial data locally). Both are mature technologies with long track records in production environments, which matters for software you are trusting with account data.
Three questions drive the design: How much money do you have? Are you spending less than you earn? What are you spending it on? The interface surfaces those answers through a net worth tracker, an income-versus-expense view, and a transaction log across all accounts. That is not a simplified description: those three views are genuinely the product. The philosophy is to remove complexity rather than accumulate features.
The archived status is the main thing to understand before installing. Maybe is not receiving new features or bug fixes from the original team. It works as released, but if a future browser update or dependency breaks something, the fix would need to come from the community or from you. For a personal finance app where your data lives in your own database, that is a manageable trade-off. Your data is not stuck in Maybe's servers.
What you get after installing it
The core of the app is account management. You connect financial accounts and Maybe tracks their balances over time, producing a running net worth calculation.
Account types supported: checking and savings accounts, credit cards, loans, mortgages, investment accounts, crypto, and custom accounts for anything else (a car, a property, a business interest). Each account shows a balance trend chart so you can see how it has moved over time.
Transaction management: a full-featured log with search, filtering, and bulk editing. The rules engine lets you set conditions (transactions from "Whole Foods" get tagged as "Groceries") that apply automatically to new and historical transactions. CSV import covers the case where your bank does not support automatic connection.
Budget tracking: monthly budgets by category with comparison to your historical average spend. The budgeting view shows where you are mid-month relative to where you typically land.
Net worth and balance sheet: the dashboard shows your total net worth as a single number and as a trend chart. Assets on one side, liabilities on the other. The kind of view that wealth managers charge for. The multi-currency support is genuine: accounts in different currencies are converted and aggregated correctly.
AI chat is opt-in and requires your own OpenAI API key (a credential from OpenAI that lets the app call their AI service, with costs billed to your OpenAI account). You provide the key; the app sends financial summaries to OpenAI to answer questions like "what did I spend on restaurants last quarter?" or "am I on track for my savings goal?" Transaction details are sent; personal identifiers like your name and account numbers are not. If you leave the API key blank, the rest of the app works without it.
REST API with key management: every account, transaction, and balance is accessible through a web API (a set of addresses you or a script can call to read or write data). This is not a common feature in consumer finance apps. It means you can query Maybe from a spreadsheet, a script, or another tool without exporting a CSV every time.
Household members: invite a partner or family member to the same instance. Access is shared within the household.
Two-factor authentication: optional but supported for securing the login.
The install experience
Maybe uses Docker Compose, which is a tool that starts the app and all its dependencies (the database, a background job processor, a cache layer) together with a single command. You do not need to install Ruby, configure databases, or know anything about web servers.
The full setup has four steps:
Step 1: Install Docker. If you are on a Mac or Windows machine, install Docker Desktop from docker.com. On a Linux server (a VPS, which is a rented server in the cloud, or a home server), install Docker Engine with one command from the official guide.
Step 2: Download the Compose file. One command fetches the configuration:
mkdir -p ~/docker-apps/maybe && cd ~/docker-apps/maybe
curl -o compose.yml https://raw.githubusercontent.com/maybe-finance/maybe/main/compose.example.yml
Step 3 (optional but recommended): Create an environment file. For anything beyond a local trial, create a .env file with a secret key and a database password:
touch .env
# Add these two lines to the file:
# SECRET_KEY_BASE="generate_with: openssl rand -hex 64"
# POSTGRES_PASSWORD="a_strong_password_you_choose"
Step 4: Start the app.
docker compose up -d
Open http://localhost:3000, create your account, and the app is live. The -d flag runs everything in the background so it stays running when you close the terminal.
That is the complete install. No DNS setup, no certificate configuration, no database migration commands. For a local home network deployment, this is genuinely a 15-minute process.
For public internet access, you would need a reverse proxy (a program that sits in front of the app and handles HTTPS, the encrypted connection indicated by the padlock in your browser). That is additional configuration not covered by the default compose file, and it requires some familiarity with tools like Caddy or Nginx. For home use on your own network, the default setup is sufficient.
To update: navigate to the directory, run docker compose pull && docker compose build && docker compose up --no-deps -d web worker. Changing the image tag (the version label in the compose file) to ghcr.io/maybe-finance/maybe:stable pins the app to the final v0.6.0 release, which is the appropriate choice for a home deployment you do not want changing unexpectedly.
Where it fits and what to compare it to
The direct competitors are services you are probably already paying for.
Monarch Money is approximately $99 per year. It has a polished UI, active development, and native Plaid (a service that connects to your bank accounts and pulls transactions automatically) integration across hundreds of institutions. Maybe does not have automatic bank syncing in the self-hosted version. If your bank supports CSV export, you can import manually; some community forks have added sync support. If automatic transaction import is non-negotiable, Monarch Money wins on that specific feature.
Quicken charges approximately $104 per year for its basic plan and has been the incumbent in this category for decades. Its data model is complex and its export story has historically been weak. Maybe's net worth tracking and transaction management cover everything Quicken does for a typical household, without the vendor lock-in.
Firefly III (github.com/firefly-iii/firefly-iii, 18,000+ stars) is the other major open-source personal finance option. It is actively maintained, which is a real advantage over Maybe's archived status. Firefly III's interface is more utilitarian and its learning curve is steeper. If you want a tool that will receive updates for years, Firefly III is the safer long-term bet. If you want a more consumer-grade interface and are comfortable with finished software, Maybe looks and feels better.
GnuCash is free, open-source, and desktop-based. It is a full double-entry accounting system (a rigorous bookkeeping method used by accountants). More powerful for complex financial structures, significantly harder to use for a household that just wants to see net worth and spending.
The decision is straightforward: if you want a Monarch Money-quality interface on your own server and are willing to import transactions manually or connect a bank sync solution yourself, Maybe is the right tool. If active maintenance and automatic bank connections are priorities, use Firefly III or stick with a paid service.
Verdict
Install it if you want a clean, honest view of your financial picture, you are not willing to pay $100/year for a hosted service, and data ownership matters to you. The install is simpler than almost any other self-hosted financial tool, the interface is genuinely good, and the fact that it was a paid product before being open-sourced means it was designed as a real consumer product rather than a developer tool.
The archived status is a real caveat, not a minor footnote. You are installing software that will not receive new features. The v0.6.0 release works as shipped, but if a software component the app relies on breaks, or a bank changes its CSV format, you are on your own or relying on community forks. For most households, that trade-off is fine: the app does what it does, your data lives in a PostgreSQL database you control, and you can export everything at any time.
The community around the project remains active. Discussions on the GitHub repository continue, and forks with added features exist. The original codebase is a strong foundation for anyone willing to run it as-is or build on top of it.
One more thing worth stating plainly: maybe you do not need automatic bank syncing. For households that review finances once a month, importing a CSV from each account takes five minutes. The privacy benefit is that your bank credentials never leave your machine, Plaid or any aggregator never sees your transaction history, and the financial picture you build stays entirely within the infrastructure you run.