head to head · open source
crowdsec vs osv-scanner
crowdsec has 15,510 GitHub stars, 757 forks, 296 open issues and last shipped 4 days ago. osv-scanner has 11,460 stars, 843 forks, 113 open issues and last shipped yesterday. crowdsec leads on adoption by 35% (15,510 vs 11,460 stars). crowdsec is written in Go under MIT; osv-scanner is written in Go under Apache-2.0. crowdsec has attracted 5% as many forks as stars, osv-scanner 7%. osv-scanner 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
| crowdsec | osv-scanner | |
|---|---|---|
| GitHub stars | ★ 16K | ★ 11K |
| License | MIT | Apache-2.0 |
| Written in | Go | Go |
| Last push | 2026-11-06 | 2026-11-09 |
| Forks | ⑂ 757 | ⑂ 843 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick crowdsec if
- You weight community size — 16K stars and counting
- You want the MIT license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick osv-scanner if
- You want the osv-scanner 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 osv-scanner fits your workflow better
About crowdsec
CrowdSec: open source IDS/IPS, WAF and bot detection CrowdSec is an open source and participative security solution offering crowdsourced server detection and protection against malicious IPs. Detect and block with our Security Engine, contribute to the network, and enjoy our real time community blocklist. Features & Advantages Versatile Security Engine CrowdSec Security Engine is an all in one IDS/IPS and WAF. It detects bad behaviors by analyzing log sources and HTTP requests, and allows active remediation thanks to the Remediation Components. Detection rules are available on our hub under MIT license…
read the full crowdsec overview →
About osv-scanner
Use OSV Scanner to find existing vulnerabilities affecting your project's dependencies. OSV Scanner provides an officially supported frontend to the OSV database and CLI interface to OSV Scalibr that connects a project’s list of dependencies with the vulnerabilities that affect them. OSV Scanner supports a wide range of project types, package managers and features, including but not limited to: Languages: C/C++, Dart, Elixir, Go, Java, Javascript, PHP, Python, R, Ruby, Rust. Package Managers: npm, pip, yarn, maven, go modules, cargo, gem, composer, nuget and others. Operating Systems: Detects vulnerabilities in…
read the full osv-scanner overview →
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Frequently asked questions
Is crowdsec or osv-scanner more popular?
crowdsec has 15,510 GitHub stars and osv-scanner has 11,460. crowdsec has the larger community by that measure.
Are crowdsec and osv-scanner free?
Both are open source. crowdsec is licensed under MIT and osv-scanner under Apache-2.0. Neither carries a licence fee.
What is the difference between crowdsec and osv-scanner?
crowdsec is written in Go and osv-scanner 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, crowdsec or osv-scanner?
Choose crowdsec if you want the larger community (15,510 stars) or its MIT licence terms. Choose osv-scanner if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.