head to head · open source
Flagsmith vs ALTCHA
Flagsmith has 6,559 GitHub stars, 568 forks, 711 open issues and last shipped yesterday. ALTCHA has 2,757 stars, 132 forks, 0 open issues and last shipped 7 days ago. Flagsmith leads on adoption by 138% (6,559 vs 2,757 stars). Flagsmith is written in Python under BSD-3-Clause; ALTCHA is written in TypeScript under MIT. Flagsmith has attracted 9% as many forks as stars, ALTCHA 5%. Flagsmith was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Flagsmith | ALTCHA | |
|---|---|---|
| GitHub stars | ★ 6.6K | ★ 2.8K |
| License | BSD-3-Clause | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-09-17 | 2026-09-11 |
| Forks | ⑂ 568 | ⑂ 132 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Flagsmith if
- You weight community size — 6.6K stars and counting
- You want the BSD-3-Clause license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick ALTCHA if
- You want the ALTCHA feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and ALTCHA fits your workflow better
About Flagsmith
Flagsmith is an open source feature flag and remote configuration platform, written in Python and released under the BSD 3 Clause licence, for engineering teams that need to toggle, segment and roll out features across web, mobile and server side applications without deploying new code.
read the full Flagsmith overview →
About ALTCHA
ALTCHA is self hosted privacy first security tool. It lives in TypeScript open source web component ecosystem. It belongs to application security. It protects websites, APIs, and online services from spam, bots, and abuse. It uses proof of work mechanism instead of traditional visual puzzles. It is MIT licensed. Operators run it on own infrastructure.
read the full ALTCHA overview →
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Frequently asked questions
Is Flagsmith or ALTCHA more popular?
Flagsmith has 6,559 GitHub stars and ALTCHA has 2,757. Flagsmith has the larger community by that measure.
Are Flagsmith and ALTCHA free?
Both are open source. Flagsmith is licensed under BSD-3-Clause and ALTCHA under MIT. Neither carries a licence fee.
What is the difference between Flagsmith and ALTCHA?
Flagsmith is written in Python and ALTCHA in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Flagsmith or ALTCHA?
Choose Flagsmith if you want the larger community (6,559 stars) or its BSD-3-Clause licence terms. Choose ALTCHA if its feature set, stack or MIT licence fits better. Both are self-hostable.