head to head · open source
Fluxer vs certstrap
Fluxer has 10,318 GitHub stars, 760 forks, 111 open issues and last shipped today. certstrap has 2,454 stars, 212 forks, 32 open issues and last shipped 8 months ago. Fluxer leads on adoption by 320% (10,318 vs 2,454 stars). Fluxer is written in TypeScript under AGPL-3.0; certstrap is written in Go under Apache-2.0. Fluxer has attracted 7% as many forks as stars, certstrap 9%. Fluxer 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
| Fluxer | certstrap | |
|---|---|---|
| GitHub stars | ★ 10K | ★ 2.5K |
| License | AGPL-3.0 | Apache-2.0 |
| Written in | TypeScript | Go |
| Last push | 2026-09-20 | 2026-02-03 |
| Forks | ⑂ 760 | ⑂ 212 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Fluxer if
- You weight community size — 10K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick certstrap if
- You want the certstrap feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and certstrap fits your workflow better
About Fluxer
Fluxer is a free and open source instant messaging and VoIP chat application built for friends, groups, and communities. The project's tagline describes it as messaging with privacy and community focus, and the GitHub description repeats the same core purpose. The repository is written in TypeScript and is distributed under the AGPL 3.0 license.
read the full Fluxer overview →
About certstrap
certstrap is a simple certificate manager written in Go that bootstraps a private certificate authority and public key infrastructure, aimed at operators and developers who need to issue TLS certificates without wrestling with openssl.
read the full certstrap overview →
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Frequently asked questions
Is Fluxer or certstrap more popular?
Fluxer has 10,318 GitHub stars and certstrap has 2,454. Fluxer has the larger community by that measure.
Are Fluxer and certstrap free?
Both are open source. Fluxer is licensed under AGPL-3.0 and certstrap under Apache-2.0. Neither carries a licence fee.
What is the difference between Fluxer and certstrap?
Fluxer is written in TypeScript and certstrap in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Fluxer or certstrap?
Choose Fluxer if you want the larger community (10,318 stars) or its AGPL-3.0 licence terms. Choose certstrap if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.