[opensourcedex]

best-of ranking · updated nightly

Best Open Source Finance & Fintech Tools

Ranked by GitHub stars — actual adoption, not editorial taste. All 7 are free, open source and self-hostable; license and last activity on every entry.

  1. 1
    OpenBB ★ 73K

    AI-powered analytics workspace built for investment teams

    NOASSERTION Python pushed 2026-09-17 details →
  2. 2
    Hyperswitch ★ 44K

    Open source payment orchestrator for global transactions

    Apache-2.0 Rust pushed 2026-09-17 details →
  3. 3
    Hummingbot ★ 20K

    Open-source crypto trading bot for market making

    Apache-2.0 Python pushed 2026-09-17 details →
  4. 4
    Crater ★ 8.3K

    AI-powered embedded AR/AP automation for platforms

    AGPL-3.0 PHP pushed 2024-08-10 details →
  5. 5
    Ballerine ★ 2.4K

    AI agents that transform merchant risk decisions at scale

    NOASSERTION TypeScript pushed 2026-09-09 details →
  6. 6
    Formance ★ 525

    Open source financial infrastructure for modern businesses

    NOASSERTION Go pushed 2026-09-16 details →
  7. 7
    0 Finance ★ 249

    Transform idle cash into competitive yield for startups

    MIT TypeScript pushed 2026-04-03 details →
method stars desc · snapshot from github api refresh nightly related Design & Prototyping, Logistics & Supply Chain, Media & Streaming, Photo & Video Editors, Gaming, Internet of Things (IoT)

Related best-of lists

best Design & Prototyping →best Logistics & Supply Chain →best Media & Streaming →best Photo & Video Editors →best Gaming →best Internet of Things (IoT) →

last updated nightly · ranking method: github stars, live-tracked

Looking for a replacement for one specific commercial product? Browse alternatives by tool →

Frequently asked questions

What is the best open source Finance & Fintech tool in 2026?

OpenBB leads the ranking with 73,153 GitHub stars, ahead of Hyperswitch. Rankings use live GitHub star counts, refreshed nightly.

How is this list of Finance & Fintech tools ranked?

By GitHub stars — a proxy for adoption and community size. Each entry also shows its licence, primary language and last commit date, so you can judge maintenance activity rather than trusting the ranking alone.

Are the best Finance & Fintech tools free?

Every project on this list is open source and free to self-host. Some also offer paid managed hosting, but the software itself carries no licence fee.