head to head · open source
osv-scanner vs crlfuzz
osv-scanner has 11,421 GitHub stars, 843 forks, 113 open issues and last shipped 2 days ago. crlfuzz has 1,576 stars, 144 forks, 1 open issues and last shipped 25 days ago. osv-scanner leads on adoption by 625% (11,421 vs 1,576 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 | 2026-11-05 | 2026-10-13 |
| Forks | ⑂ 843 | ⑂ 144 |
| 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
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 →
About crlfuzz
CRLFuzz A fast tool to scan CRLF vulnerability written in Go Resources Installation from Binary from Source from GitHub Usage Basic Usage Flags Target Single URL URLs from list from Stdin Method Data Adding Headers Using Proxy Concurrency Silent Verbose Version Library Help & Bugs License Version Installation from Binary The installation is easy. You can download a prebuilt binary from releases page, unpack and run! or with from Source If you have go1.13+ compiler installed and configured: In order to update the tool, you can use u flag with go get command. from GitHub Usage Basic Usage Simply, CRLFuzz can be…
read the full crlfuzz overview →
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Frequently asked questions
Is osv-scanner or crlfuzz more popular?
osv-scanner has 11,421 GitHub stars and crlfuzz has 1,576. 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 (11,421 stars) or its Apache-2.0 licence terms. Choose crlfuzz if its feature set, stack or MIT licence fits better. Both are self-hostable.