head to head · open source
Sentry vs SysmonTools
Sentry has 44,806 GitHub stars, 4,857 forks, 2,265 open issues and last shipped today. SysmonTools has 1,663 stars, 209 forks, 1 open issues and last shipped 6 months ago. Sentry leads on adoption by 2,594% (44,806 vs 1,663 stars). Sentry is written in Python under a custom or non-standard licence; SysmonTools is written in TypeScript under GPL-3.0. Sentry has attracted 11% as many forks as stars, SysmonTools 13%. 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 | SysmonTools | |
|---|---|---|
| GitHub stars | ★ 45K | ★ 1.7K |
| License | Custom / other | GPL-3.0 |
| Written in | Python | TypeScript |
| Last push | 2026-09-20 | 2026-04-04 |
| Forks | ⑂ 4.9K | ⑂ 209 |
| 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 SysmonTools if
- You want the SysmonTools feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches TypeScript
- You evaluated both and SysmonTools 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 SysmonTools
SysmonTools is a collection of open source utilities for analyzing, visualizing, and managing Microsoft Sysmon logs, aimed at security analysts, DFIR specialists, and threat hunters who work with Windows endpoint telemetry.
read the full SysmonTools overview →
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Frequently asked questions
Is Sentry or SysmonTools more popular?
Sentry has 44,806 GitHub stars and SysmonTools has 1,663. Sentry has the larger community by that measure.
Are Sentry and SysmonTools free?
Both are open source. Sentry has no licence declared in this registry, and SysmonTools is licensed under GPL-3.0. Both are free to self-host.
What is the difference between Sentry and SysmonTools?
Sentry is written in Python and SysmonTools 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, Sentry or SysmonTools?
Choose Sentry if you want the larger community (44,806 stars) or its Custom / other licence terms. Choose SysmonTools if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.