head to head · open source
osv-scanner vs crlfuzz
osv-scanner has 11,074 GitHub stars, 794 forks, 113 open issues and last shipped today. crlfuzz has 1,566 stars, 146 forks, 1 open issues and last shipped 25 days ago. osv-scanner leads on adoption by 607% (11,074 vs 1,566 stars). osv-scanner is written in Go under Apache-2.0; crlfuzz is written in Go under MIT. osv-scanner has attracted 7% as many forks as stars, crlfuzz 9%. osv-scanner was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (vulnerability-scanner), 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
| osv-scanner | crlfuzz | |
|---|---|---|
| GitHub stars | ★ 11K | ★ 1.6K |
| License | Apache-2.0 | MIT |
| Written in | Go | Go |
| Last push | 2026-09-22 | 2026-08-28 |
| Forks | ⑂ 794 | ⑂ 146 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick osv-scanner if
- You weight community size — 11K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick crlfuzz if
- You want the crlfuzz feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Go
- You evaluated both and crlfuzz fits your workflow better
About osv-scanner
OSV Scanner is an Apache 2.0 licensed vulnerability scanner written in Go that connects a project's list of dependencies with the vulnerabilities affecting them, using data from the open OSV.dev database, and it is aimed at developers, maintainers, and security teams who need to find known vulnerabilities in the dependencies they already ship.
read the full osv-scanner overview →
About crlfuzz
CRLFuzz is a fast, MIT licensed command line tool written in Go that scans web targets for CRLF injection vulnerabilities, aimed at penetration testers, bug bounty hunters, and security engineers who need to check either a single URL or a long list of them quickly.
read the full crlfuzz overview →
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Frequently asked questions
Is osv-scanner or crlfuzz more popular?
osv-scanner has 11,074 GitHub stars and crlfuzz has 1,566. osv-scanner has the larger community by that measure.
Are osv-scanner and crlfuzz free?
Both are open source. osv-scanner is licensed under Apache-2.0 and crlfuzz under MIT. Neither carries a licence fee.
What is the difference between osv-scanner and crlfuzz?
osv-scanner is written in Go and crlfuzz 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, osv-scanner or crlfuzz?
Choose osv-scanner if you want the larger community (11,074 stars) or its Apache-2.0 licence terms. Choose crlfuzz if its feature set, stack or MIT licence fits better. Both are self-hostable.