💡 Pick it for a deeper, more realistic penetration-testing lab ecosystem and competitive community.
Hack The Box is an online platform that allows you to test your penetration testing and cybersecurity skills in a simulated environment.
Free/Paid
Best Parrot CTFs Alternatives ranked by AI · updated Aug 2026
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Parrot CTFs is a browser-based cybersecurity challenge platform from the Parrot Security team. It is aimed at learners and security practitioners who want hands-on practice across common capture-the-flag categories.
Top 6 Parrot CTFs alternatives
💡 Choose it when you want guided cybersecurity lessons instead of mostly standalone CTF challenges.
TryHackMe is a browser-based cybersecurity training platform for beginners through advanced learners. Its guided rooms and interactive virtual labs teach networking, penetration...
Pros
- More interactive hands-on practice than CodeRed
- Clear learning paths for beginners and career switchers
- Browser-based labs require little local setup
Cons
- Some advanced content is less comprehensive than Hack The Box Academy
- Free access excludes many of the strongest rooms
- Guided exercises can provide less realism than independent lab environments
Freemium, Premium from about $10.75/mo billed annually
3
💡 Pick it for free, well-designed CTF practice that is especially effective for beginners and students.
A capture the flag competition aimed at middle and high school students to introduce cybersecurity concepts
Pros
- Beginner-friendly challenges
- Educational resources
Cons
- Targeted towards younger audience
- Limited advanced challenges
4
PortSwigger Web Security Academy
PortSwigger
💡 Choose it for authoritative, free web-application security labs and Burp Suite-based practice.
PortSwigger Web Security Academy is a free web-application security training platform for developers, testers, and penetration testers. It combines detailed lessons with...
Pros
- More authoritative and technically detailed for web security than HackerBot
- Interactive labs cover current web-application vulnerability classes
- Completely free, including the core learning content
Cons
- Much narrower than HackerBot outside web application security
- Requires more independent study than TryHackMe
- Less useful for network, cloud, or general security topics
💡 Pick it for free command-line fundamentals and Linux security practice with minimal platform overhead.
OverTheWire provides a series of war games that can help you learn and practice security concepts.
Pros
- Progressive difficulty levels
- Educational focus
Cons
- Less interactive than other platforms
- Older interface design
6
CTFlearn
CTFlearn
💡 Choose it for a broad, free collection of community-made standalone challenges.
CTFlearn is a community-driven platform offering user-created capture-the-flag challenges across cryptography, web exploitation, programming, forensics, and other categories. It is aimed at...
Pros
- Broad range of community-created challenges across many categories
- Free access and public write-ups support self-directed learning
- Lower commitment than full virtual-machine lab platforms
Cons
- Challenge quality and difficulty are less consistent than curated platforms
- Less structured progression than TryHackMe or picoCTF
- Community content can vary in maintenance and documentation
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