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Open source Quicken alternatives for AI agents

2 alternatives to Quicken. 2 have an interface an agent can drive. 2 are open source.

ListingLicenseAgent interfaceReachEffortLast activity
Firefly III AGPL-3.0 API, from the builder 9 of 10 jobs Config only Sep 2, 2026
Ledger CLI BSD-3-Clause CLI, from the builder 8 of 9 jobs Not adaptable Aug 28, 2026

Firefly III

Self-hosted double-entry personal finance manager with a REST API that covers almost everything.

Free

Use it when
  • I want my money tracked on my own server and my agent to file transactions and check budgets
  • I run a sole trade and need double-entry books without paying for accounting software
An agent cannot reach
  • Import bank statements
Gotchas
  • AGPL-3.0: modifications you host for others must be published
  • Personal finance by design; no invoicing, client portal or tax reports
  • Bank imports need the separate Data Importer container and its own credentials

Ledger CLI

Plain-text double-entry accounting from the command line; the CLI is the whole interface.

Free

Use it when
  • I keep my books in a text file in git and want reports without a GUI
  • I want my agent to append transactions and run balance checks in a script

1 more job is undetermined.

Gotchas
  • No invoicing, no bank sync; you supply the journal
  • Python features (--import) need a Python-enabled build, which is off by default
  • Community Windows support is weaker than macOS and Linux

Questions

Is there an open source alternative to Quicken?

Yes. Both listings here are open source: Firefly III (AGPL-3.0), Ledger CLI (BSD-3-Clause).

Which Quicken alternatives have an MCP server?

None of these has an MCP server from its builder on record. The recorded interfaces are API and CLI.

Which Quicken alternative can an agent do the most with?

Firefly III: 9 of 10 recorded jobs reachable. Jobs differ by listing, so read each list before you choose.

Listings come from reading each repo and its docs. Reach counts the jobs an agent can do through the stated interface, and each listing page shows the evidence. Order follows fit. For agents: Markdown · JSON