ONLINE · OCTOBER 2026

Free online hackathons

68 hackathons coming up free online — with dates, prizes, registration deadlines and where to register. Funillion checks Devfolio, Unstop, Devpost, HackerEarth and more every few hours, so this list stays fresh.

1. SEPT28 ⌘ HackathonsCreator Colosseum: The Startup ShowdownMon, 28 Sept · 8:56 pm · Online Freeon Devpost
2. OCT1 ⌘ HackathonsOpen Source ImpactThu, 1 Oct · 12:56 am · Online Freeon Devpost
3. OCT15 ⌘ HackathonsWinter of Code 2026Thu, 15 Oct · 2:56 am · Online Freeon Devfolio
4. OCT19 ⌘ HackathonsFuture Health Digital Innovation ChallengeMon, 19 Oct · 11:56 pm · Online Freeon Hack2Skill
5. OCT19 ⌘ HackathonsAI for Foundational Learning HackathonMon, 19 Oct · 11:56 pm · Online Freeon Hack2Skill
6. OCT19 ⌘ HackathonsVirtual: PromptWarsMon, 19 Oct · 11:56 pm · Online Freeon Hack2Skill
7. OCT19 ⌘ HackathonsAgentic Banking HackathonMon, 19 Oct · 11:56 pm · Online Freeon HackerEarth
8. OCT19 ⌘ HackathonsBuild, Ship, Shape: Amazon Developer HackathonMon, 19 Oct · 11:56 pm · Online Freeon Devpost
9. OCT19 ⌘ HackathonsNebius x NVIDIA Global AI HackathonMon, 19 Oct · 11:56 pm · Online Freeon Devpost
10. OCT19 ⌘ HackathonsBuild With AI: BasicsMon, 19 Oct · 11:56 pm · Online Freeon Devpost
11. OCT19 ⌘ HackathonsOpenCV AI Competition 2026, powered by AWSMon, 19 Oct · 11:56 pm · Online Freeon Devpost
12. OCT19 ⌘ HackathonsMeta VR Start Developer Competition 2026Mon, 19 Oct · 11:56 pm · Online Freeon Devpost
13. OCT19 ⌘ HackathonsLife After CodeMon, 19 Oct · 11:56 pm · Online Freeon Devpost
14. OCT19 ⌘ HackathonsQloo Agentic HackathonMon, 19 Oct · 11:56 pm · Online Freeon Devpost
15. OCT19 ⌘ HackathonsAWS Communication Developer Services (CDS) Agentic AI Partner HackathonMon, 19 Oct · 11:56 pm · Online Freeon Devpost
16. OCT19 ⌘ HackathonsYouCam API Skin AI & eCommerce VTO HackathonMon, 19 Oct · 11:56 pm · Online Freeon Devpost
17. OCT19 ⌘ HackathonsGaluxium Nexus V2Mon, 19 Oct · 11:56 pm · Online Freeon Devpost
18. OCT19 ⌘ HackathonsIEEE ClimateChain Global HackathonMon, 19 Oct · 11:56 pm · Online Freeon Devpost
19. OCT19 ⌘ HackathonsUnivaBio ($40,000 in prizes)Mon, 19 Oct · 11:56 pm · Online Freeon Devpost
20. OCT19 ⌘ HackathonsHyperbloom October- UI/UX and Web DesignMon, 19 Oct · 11:56 pm · Online Freeon Devpost
21. OCT19 ⌘ HackathonsCode for HumanityMon, 19 Oct · 11:56 pm · Online Freeon Devpost
22. OCT19 ⌘ HackathonsDSH Hacks V2 ($100k+ in prizes!)Mon, 19 Oct · 11:56 pm · Online Freeon Devpost
23. OCT19 ⌘ HackathonsEurekaDev 2026Mon, 19 Oct · 11:56 pm · Online Freeon Devpost
24. OCT19 ⌘ HackathonsLearn AR with SPECSMon, 19 Oct · 11:56 pm · Online Freeon Devpost
25. OCT19 ⌘ HackathonsNeighborhood HacksMon, 19 Oct · 11:56 pm · Online Freeon Devpost
26. OCT19 ⌘ HackathonsSyntax SummitMon, 19 Oct · 11:56 pm · Online Freeon Devpost
27. OCT19 ⌘ HackathonsNext Byte Hacks V5Mon, 19 Oct · 11:56 pm · Online Freeon Devpost
28. OCT19 ⌘ HackathonsInnovArt 2027: Art and Technology Hack DayMon, 19 Oct · 11:56 pm · Online Freeon Devpost
29. OCT19 ⌘ HackathonsInternWell Hack 2.0Mon, 19 Oct · 11:56 pm · Online Freeon Devpost
30. OCT19 ⌘ HackathonsPumpkin PlaygroundMon, 19 Oct · 11:56 pm · Online Freeon Devpost
31. OCT19 ⌘ HackathonsLaunchPad HacksMon, 19 Oct · 11:56 pm · Online Freeon Devpost
32. OCT19 ⌘ HackathonsTaskforgeMon, 19 Oct · 11:56 pm · Online Freeon Devpost
33. OCT19 ⌘ HackathonsCreateAThonMon, 19 Oct · 11:56 pm · Online Freeon Devpost
34. OCT19 ⌘ HackathonsSafeSpace HacksMon, 19 Oct · 11:56 pm · Online Freeon Devpost
35. OCT19 ⌘ HackathonsMathematics for systems securityMon, 19 Oct · 11:56 pm · Online Freeon Devpost
36. OCT19 ⌘ HackathonsThe ArcticathonMon, 19 Oct · 11:56 pm · Online Freeon Devpost
37. OCT19 ⌘ HackathonsGLITCHATHONMon, 19 Oct · 11:56 pm · Online Freeon Devpost
38. OCT19 ⌘ HackathonsHackWithAdityaMon, 19 Oct · 11:56 pm · Online Freeon Devpost
39. OCT19 ⌘ Hackathons305 EmpowHER Edition October 2026 — 305Hackathons.vercel.appMon, 19 Oct · 11:56 pm · Online Freeon Devpost
40. OCT19 ⌘ HackathonsAQX Sports Analytics Data Bowl 4.0Mon, 19 Oct · 11:56 pm · Online Freeon Devpost
41. OCT19 ⌘ HackathonsAccessED HacksMon, 19 Oct · 11:56 pm · Online Freeon Devpost
42. OCT19 ⌘ HackathonsHerhackMon, 19 Oct · 11:56 pm · Online Freeon Devpost
43. OCT19 ⌘ HackathonsGreen Shift HacksMon, 19 Oct · 11:56 pm · Online Freeon Devpost
44. OCT20 ⌘ HackathonsArbiter Hacks V1Tue, 20 Oct · Online Freeon Devpost
45. OCT23 ⌘ HackathonsGator Hack V - AI Days 2026Fri, 23 Oct · Online Freeon Devpost
46. OCT23 ⌘ HackathonsSyntax Error 2026Fri, 23 Oct · 9:00 pm · Online Freeon Devfolio
47. OCT24 ⌘ HackathonsHefty-HacksSat, 24 Oct · 12:00 am · Online Freeon Devfolio
48. OCT29 ⌘ HackathonsCSC Winter SparkathonThu, 29 Oct · Online Freeon Devpost
49. OCT30 ⌘ HackathonsKiroween 2026Fri, 30 Oct · Online Freeon Devpost
50. OCT31 ⌘ Hackathonshackodisha-6.0Sat, 31 Oct · 12:00 am · Online Freeon Devfolio
51. OCT31 ⌘ HackathonsSTEMergent Hacks 2026Sat, 31 Oct · Online Freeon Devpost
52. NOV1 ⌘ HackathonsOstad Presents YUNet AIgnite Buildathon 2026Sun, 1 Nov · Online Freeon Devpost
53. NOV2 ⌘ HackathonsEthnoHackMon, 2 Nov · Online Freeon Devpost
54. NOV4 ⌘ HackathonsAI Agents for Founders Challenge — HETIC 2026Wed, 4 Nov · Online Freeon Devpost
55. NOV8 ⌘ HackathonsIceHacksSun, 8 Nov · Online Freeon Devpost
56. NOV10 ⌘ HackathonsThe Atomiq Hackathon | Qiskit Fall Fest 2026 at IEMTue, 10 Nov · Online Freeon Devpost
57. NOV15 ⌘ HackathonsBridge The Gap HacksSun, 15 Nov · Online Freeon Devpost
58. NOV15 ⌘ HackathonsKUK VIRTUAL HACKATHONSun, 15 Nov · Online Freeon Devpost
59. NOV16 ⌘ HackathonsBuildyourOwnWebsiteMon, 16 Nov · Online Freeon Devpost
60. DEC6 ⌘ HackathonsPromptWars x Sphoorthy Engineering CollegeSun, 6 Dec · 10:00 am · Online Freeon Hack2Skill

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