Public Good SprintWorldwide · Aug 14
OpenThe internet's build room
Find your next
big build.
Discover hackathons worth losing sleep over. Meet your crew, ship something real, and let the right people find it.
✓ Free for builders✓ Private by default✓ Teams welcome
Discover
2 openYour next 48 hours.
Agentic Build WeekSan Francisco, US · Sep 3
OpenFuture of LearningDetroit, US · Sep 21
Soon⚡
Patch keeps the path clearRegister, team up, submit, judge
0 registered builders✦3 public hackathons✦Online + in person ways to build✦One workspace through demo day
Three good moves
From “maybe” to demo day.
We keep the logistics light so you can put all your energy into the build.
01DISCOVER
Pick your sprint
Browse by theme, format, location, prize, and the kind of challenge you want.
02CONNECT
Build your crew
Match by skills, availability, and ambition—or bring the team you already trust.
03SHIP
Ship and get seen
Submit once, showcase everywhere, and keep your project alive after the weekend.
Start somewhere
Open calls for bold ideas.
Real themes, real people, and deadlines close enough to get you moving.
PGOnline
Registration open · Civic technology
Public Good Sprint
Build useful tools for neighbors, public servants, and community organizations.
- Date
- August 14–16, 2026
- Place
- Worldwide
ABHybrid
Registration open · AI agents
Agentic Build Week
A focused week for ambitious AI agents with meaningful real-world workflows.
- Date
- September 3–10, 2026
- Place
- San Francisco, US
FLIn person
Coming up · Education
Future of Learning
Prototype better ways to teach, practice, and understand difficult things.
- Date
- September 21–23, 2026
- Place
- Detroit, US
The whole build loop
One network.
Every side of the build.
Builders get momentum. Hosts get a command center. Great projects keep moving after the judging ends.
See organizer plans ↗Smart discovery
Relevant events, not an endless directory.
Team matching
Skills, roles, and working styles that click.
Host command center
Applications, teams, judging, and updates in one place.
Living project pages
Every launch gets a home beyond demo day.
Fair judging
Clear rubrics, reviewer lanes, and fast shortlists.
Real reputation
A builder profile made from what you ship.
Simple by design
Free to build.
Easy to host.
Join teams, enter hackathons, and publish your work for free. Organizer packages start with a 14-day trial.
ORGANIZER
$149 / month
- Applications and team tools
- Judging workspace
- One active event · up to 150 builders