head to head · open source
ProjectDiscovery vs crlfuzz
ProjectDiscovery has 32,622 GitHub stars, 3,971 forks, 107 open issues and last shipped yesterday. crlfuzz has 1,576 stars, 144 forks, 1 open issues and last shipped 25 days ago. ProjectDiscovery leads on adoption by 1,970% (32,622 vs 1,576 stars). ProjectDiscovery is written in Go under MIT; crlfuzz is written in Go under MIT. ProjectDiscovery has attracted 12% as many forks as stars, crlfuzz 9%. ProjectDiscovery 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
| ProjectDiscovery | crlfuzz | |
|---|---|---|
| GitHub stars | ★ 33K | ★ 1.6K |
| License | MIT | MIT |
| Written in | Go | Go |
| Last push | 2026-11-06 | 2026-10-13 |
| Forks | ⑂ 4.0K | ⑂ 144 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ProjectDiscovery if
- You weight community size — 33K stars and counting
- You want the MIT 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 ProjectDiscovery
English • 中文 • Korean • Indonesia • Spanish • 日本語 • Portuguese • Türkçe Nuclei is a modern, high performance vulnerability scanner that leverages simple YAML based templates. It empowers you to design custom vulnerability detection scenarios that mimic real world conditions, leading to zero false positives. Simple YAML format for creating and customizing vulnerability templates. Contributed by thousands of security professionals to tackle trending vulnerabilities. Reduce false positives by simulating real world steps to verify a vulnerability. Ultra fast parallel scan processing and request clustering. Integrate…
read the full ProjectDiscovery 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 ProjectDiscovery or crlfuzz more popular?
ProjectDiscovery has 32,622 GitHub stars and crlfuzz has 1,576. ProjectDiscovery has the larger community by that measure.
Are ProjectDiscovery and crlfuzz free?
Both are open source. ProjectDiscovery is licensed under MIT and crlfuzz under MIT. Neither carries a licence fee.
What is the difference between ProjectDiscovery and crlfuzz?
ProjectDiscovery 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, ProjectDiscovery or crlfuzz?
Choose ProjectDiscovery if you want the larger community (32,622 stars) or its MIT licence terms. Choose crlfuzz if its feature set, stack or MIT licence fits better. Both are self-hostable.