head to head · open source
Sentry vs ali
Sentry has 44,806 GitHub stars, 4,857 forks, 2,265 open issues and last shipped today. ali has 3,940 stars, 151 forks, 25 open issues and last shipped 8 months ago. Sentry leads on adoption by 1,037% (44,806 vs 3,940 stars). Sentry is written in Python under a custom or non-standard licence; ali is written in Go under MIT. Sentry has attracted 11% as many forks as stars, ali 4%. Sentry was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (monitoring), so they are genuine substitutes rather than adjacent tools.
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
| Sentry | ali | |
|---|---|---|
| GitHub stars | ★ 45K | ★ 3.9K |
| License | Custom / other | MIT |
| Written in | Python | Go |
| Last push | 2026-09-20 | 2026-01-19 |
| Forks | ⑂ 4.9K | ⑂ 151 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Sentry if
- You weight community size — 45K stars and counting
- You want the Custom / other license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick ali if
- You want the ali feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Go
- You evaluated both and ali fits your workflow better
About Sentry
Sentry is an open source debugging platform for detecting, tracing, and fixing software issues in real time. It lives in the developer infrastructure ecosystem and provides error tracking and performance monitoring across languages, frameworks, and runtime environments.
read the full Sentry overview →
About ali
ali is a Go command line load testing tool that generates HTTP traffic against a target and plots the resulting metrics live in an embedded terminal UI, built for developers and operators who need to watch how a service behaves while the load is still running instead of reading a report afterwards.
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Frequently asked questions
Is Sentry or ali more popular?
Sentry has 44,806 GitHub stars and ali has 3,940. Sentry has the larger community by that measure.
Are Sentry and ali free?
Both are open source. Sentry has no licence declared in this registry, and ali is licensed under MIT. Both are free to self-host.
What is the difference between Sentry and ali?
Sentry is written in Python and ali 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, Sentry or ali?
Choose Sentry if you want the larger community (44,806 stars) or its Custom / other licence terms. Choose ali if its feature set, stack or MIT licence fits better. Both are self-hostable.