GSoCGoogle Summer of Code
Participant registration · usually held in March · 2027
2026–2030 calendar
Competition calendar
Tech competitions highlighted (⚡), science olympiads, hackathons and more. Filter by age and click an event for details.
⚡ Upcoming tech dates
48h HackathonsMLH GHWOnline hackathon weekNov 6–12, 2026happening now</> ProgrammingBebrasWorld-Wide Bebras Week of computational thinkingNov 9–13, 2026happening now🔐 CybersecurityCSAWCSAW Cybersecurity Games Global FinalsNov 12–14, 2026in 2 days48h HackathonsJunctionHackathon (48 h)Nov 13–15, 2026in 3 days
Long registration periods appear only on the days they open and close.
This month's competitions
March 2027
3 dates
No competition with a confirmed date this month.
Next in the calendar: RECF Worlds · World final (Apr 25 – May 7, 2027).
This month, no set day · announcements and estimates
Reply ChallengeReply Challenges (Code & Cyber Security)
Reply Challenge coding and security marathon · usually held in March · 2027
picoCTFpicoCTF 2027 (CyLab Security Academy)
Online competition · usually held in March · 2027
No date yet in 2027 (1)
OutreachyOutreachy
Applications for paid internships (May cohort) · no date forecast yet · 2027
Confirmed: official days · Month announced: days to be confirmed · Estimate: the month it is usually held, not announced yet · No forecast: date unknown.
Dates checked on the organizers' official websites and calendars (last review on November 6, 2026). They may change: always confirm on the official website before registering or traveling.