head to head · open source
afrog vs crlfuzz
afrog has 4,453 GitHub stars, 493 forks, 111 open issues and last shipped 3 days ago. crlfuzz has 1,576 stars, 144 forks, 1 open issues and last shipped 25 days ago. afrog leads on adoption by 183% (4,453 vs 1,576 stars). afrog is written in Go under MIT; crlfuzz is written in Go under MIT. afrog has attracted 11% as many forks as stars, crlfuzz 9%. afrog 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
| afrog | crlfuzz | |
|---|---|---|
| GitHub stars | ★ 4.5K | ★ 1.6K |
| License | MIT | MIT |
| Written in | Go | Go |
| Last push | 2026-11-04 | 2026-10-13 |
| Forks | ⑂ 493 | ⑂ 144 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick afrog if
- You weight community size — 4.5K 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 afrog
A Security Tool for Bug Bounty, Pentest and Red Teaming English • 中文 What is afrog afrog is a high performance vulnerability scanner with support for built in and custom PoCs. It is designed for fast verification, low false positives, and practical workflows across web targets, network services, PoC authoring, and SDK based integration. Install For source builds or go install , use Go 1.27 or later. Binary release Download the latest release from: Build from source Go install Quick start Scan a single target: Scan multiple targets from a file: Run only high and critical checks: Documentation The documentation is…
read the full afrog 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 afrog or crlfuzz more popular?
afrog has 4,453 GitHub stars and crlfuzz has 1,576. afrog has the larger community by that measure.
Are afrog and crlfuzz free?
Both are open source. afrog is licensed under MIT and crlfuzz under MIT. Neither carries a licence fee.
What is the difference between afrog and crlfuzz?
afrog 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, afrog or crlfuzz?
Choose afrog if you want the larger community (4,453 stars) or its MIT licence terms. Choose crlfuzz if its feature set, stack or MIT licence fits better. Both are self-hostable.