head to head · open source
PentestGPT vs nomore403
PentestGPT has 16,247 GitHub stars, 2,838 forks, 81 open issues and last shipped 4 months ago. nomore403 has 1,915 stars, 223 forks, 2 open issues and last shipped 4 days ago. PentestGPT leads on adoption by 748% (16,247 vs 1,915 stars). PentestGPT is written in Python under MIT; nomore403 is written in Go under MIT. PentestGPT has attracted 17% as many forks as stars, nomore403 12%. nomore403 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
| PentestGPT | nomore403 | |
|---|---|---|
| GitHub stars | ★ 16K | ★ 1.9K |
| License | MIT | MIT |
| Written in | Python | Go |
| Last push | 2026-07-14 | 2026-10-30 |
| Forks | ⑂ 2.8K | ⑂ 223 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick PentestGPT if
- You weight community size — 16K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick nomore403 if
- You want the nomore403 feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Go
- You evaluated both and nomore403 fits your workflow better
About PentestGPT
[![Contributors][contributors shield]][contributors url] [![Forks][forks shield]][forks url] [![Stargazers][stars shield]][stars url] [![Issues][issues shield]][issues url] [![MIT License][license shield]][license url] [![Discord][discord shield]][discord url] PentestGPT AI Powered Autonomous Penetration Testing Agent Published at USENIX Security 2024 Official Website: pentestgpt.com » Research Paper · Report Bug · Request Feature Demo Installation Watch on YouTube PentestGPT in Action Watch on YouTube What's New in v1.0 (Agentic Upgrade) Multi Stage Pipeline The agent works through staged phases (recon →…
read the full PentestGPT overview →
About nomore403
NoMore403 nomore403 is a command line tool for testing HTTP access control bypasses and parser inconsistencies around 401 , 403 , and related responses. The tool is designed for practical web security work: bug bounty, penetration testing, security reviews, and regression testing of access control rules. It automates a broad set of request mutations, captures a baseline, filters common false positives, and highlights the responses most likely to represent a meaningful bypass. What It Does Given a target URL, nomore403 : 1. Sends a baseline request to capture the blocked response. 2. Optionally auto calibrates…
read the full nomore403 overview →
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Frequently asked questions
Is PentestGPT or nomore403 more popular?
PentestGPT has 16,247 GitHub stars and nomore403 has 1,915. PentestGPT has the larger community by that measure.
Are PentestGPT and nomore403 free?
Both are open source. PentestGPT is licensed under MIT and nomore403 under MIT. Neither carries a licence fee.
What is the difference between PentestGPT and nomore403?
PentestGPT is written in Python and nomore403 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, PentestGPT or nomore403?
Choose PentestGPT if you want the larger community (16,247 stars) or its MIT licence terms. Choose nomore403 if its feature set, stack or MIT licence fits better. Both are self-hostable.