The global calendar of capture-the-flag competitions, with online CTFs almost every weekend and team rankings.
Who can apply
Anyone; each CTF sets its own rules.
Dates
New CTFs every week.
How to apply
- Form a team with classmates and register it on CTFtime.
- Pick CTFs marked for beginners or with a low weight first.
- Write up every challenge you solve and share it.
SWABUD noteThis is a general listing for the calendar. Check each CTF's rules and format.
What it costs and what you get
Cost: Most CTFs are free
Benefits: Practice under pressure and a public team ranking
Members only · free
Unlock how to apply
Create a free SWABUD account to see the full listing and keep track of it.
- The official application link
- Step-by-step how to apply and SWABUD's tips
- Cost, benefits and level
- Calendar reminders and your personal tracker
Before you apply
- Open the official page and confirm the dates in Nepal time.
- Read the eligibility rules in full, including age and country.
- Never pay an agent or a third party to apply. Official programmes say clearly if there is a fee.
- Save a copy of your application and any confirmation email.