Ctf servers

26 measured server(s) with the Ctf sub-topic, ranked by real members. Browse topics →

Server	Members	Online	Active
1 Hacker101	77,273	3,727	4.8%
2 pwn.college	44,670	5,546	12.4%
3 Dropout Phreaks	27,094	2,851	10.5%
4 CyLab Security Academy (formerly picoCTF)	25,224	2,309	9.2%
5 Blue Team Labs Online ☁	6,734	540	8.0%
6 DownUnderCTF	5,184	741	14.3%
7 CyberStudents	5,082	503	9.9%
8 CyberTalents	2,274	96	4.2%
9 UofTCTF	1,443	270	18.7%
10 𝚂𝚎𝚌𝙴𝚗𝚝	1,336	105	7.9%
11 EDU CTF Course	1,289	254	19.7%
12 THJCC CTF	1,283	216	16.8%
13 HackIndex	1,167	133	11.4%
14 infophreak	868	82	9.4%
15 CTF-RU	636	88	13.8%
16 PicoCTF_Africa	605	17	2.8%
17 GreHack 2026	603	85	14.1%
18 Capture the Flag Club	564	61	10.8%
19 The Hack Pack	460	61	13.3%
20 CTFClub	418	16	3.8%
21 Barracks HQ	297	6	2.0%
22 CSCGR (Cyber Security Challenge Greece)	295	19	6.4%
23 UW-Stout CTF	262	23	8.8%
24 Century College CCDC team	53	6	11.3%
25 Nigeria National CTF	51	3	5.9%
26 ☕ | WebDevs Plataform	16	3	18.8%