Hacker101 offers a free web security class with lessons and Capture the Flag challenges.
CTF101
vsCTFtime
CTF101 vs CTFtime
How do CTF101 and CTFtime compare? Here are the facts side by side: pricing, platforms, open-source status and what each one is for.
| Directory detail | CTF101 | CTFtime |
|---|---|---|
| What it is | The CTF101 wiki introduces Capture the Flag competitions and explains related security concepts. | CTFtime lists upcoming and past Capture the Flag events, teams, tasks, ratings, and writeups. |
| Website | ||
| Type | Website | Website |
| Topic | ||
| Pricing | Not confirmed | Not confirmed |
| Platforms | Web | Web |
| Open source | Not stated | Not stated |
| Language | English | English |
| Alternatives |
Other options to consider
Sites similar to both CTF101 and CTFtime.
CTF Sites lists Capture the Flag sites and provides a directory for finding cybersecurity challenges.