Ctf servers
23 measured server(s) with the Ctf sub-topic, ranked by real members. Browse topics →
| Server | Members | Online | Active |
|---|---|---|---|
1 Hacker101 | 77,324 | 3,323 | 4.3% |
2 pwn.college | 39,449 | 4,581 | 11.6% |
3 Dropout Phreaks | 26,429 | 2,508 | 9.5% |
4 CyLab Security Academy (formerly picoCTF) | 24,657 | 2,037 | 8.3% |
5 Blue Team Labs Online ☁ | 6,757 | 625 | 9.2% |
6 DownUnderCTF | 5,244 | 766 | 14.6% |
7 CyberTalents | 2,268 | 64 | 2.8% |
8 UofTCTF | 1,421 | 248 | 17.5% |
9 THJCC CTF | 1,286 | 278 | 21.6% |
10 EDU CTF Course | 1,230 | 339 | 27.6% |
11 𝐒𝐞𝐜𝐄𝐧𝐭 | 994 | 108 | 10.9% |
12 CTF-RU | 617 | 20 | 3.2% |
| 13 PicoCTF_Africa | 611 | 8 | 1.3% |
14 GreHack 2025 | 560 | 109 | 19.5% |
15 Capture the Flag Club | 546 | 49 | 9.0% |
16 CTFClub | 420 | 6 | 1.4% |
17 The Hack Pack | 407 | 30 | 7.4% |
18 CSCGR (Cyber Security Challenge Greece) | 293 | 42 | 14.3% |
19 UW-Stout CTF | 263 | 24 | 9.1% |
20 Barracks HQ | 260 | 12 | 4.6% |
21 Nigeria National CTF | 51 | 5 | 9.8% |
22 Century College CCDC team | 49 | 6 | 12.2% |
23 ☕ | WebDevs Plataform | 14 | 4 | 28.6% |