antipaywallJoin

Free to enter. Dates announced once 100+ builders are in.

The open-source hackathon owned by its builders.

Free to enter, one week to build. The community funds the prize pool, an independent nonprofit will hold it, and the builders will pick the winners by public vote. We take nothing.

10 of 100+ builders joined

The dates are announced as soon as 100+ builders have joined and the pool holder is confirmed. There is no cap on builders.

  1. NowJoin, post and heart ideas, pledge to the pool
  2. 7 daysBuild week, in public repos
  3. 3 daysBuilders vote, every ballot published
  4. Day afterWinners announced, then paid in public

The dates are announced once both are true:

  • 100+ builders have joined (10 so far)
  • An independent third party is holding the pool (not yet)

Every dollar, out in the open.

The prize pool is whatever the community puts in. These figures are counted from what people enter on this site, each time the page loads. Once the pool opens, its total will be read from the holder's public ledger. A pledge is a public promise, not a payment.

$2,750

pledged so far

Builders joined
10
Paid in so far
$0. The pool is not open for payments yet
Organizer's pledge
$2,500, from his own money

Pledges

Promises, not payments

Antipaywall takes nothing: no cut, no fee, no profit. Who will hold the money

Build the free version of something people overpay for.

That is the whole brief. Pick something people would otherwise pay for and build the free, open-source version. You get 7 days to build, and one feature of a bigger product is a fair scope.

Why we are doing it this way

  • We think software is heading toward open source.AI is making software much cheaper to build, and we think that pushes most of it toward being open. That does not stop anyone building a paid layer on top.
  • We think you should give people the thing itself.If you believe something is valuable, hand the community the real thing. If it really is valuable, the demand will show, and a business can still grow from it.
  • So this is not a race to ship something to sell.It is a week to make something people can use, read, fork and keep.

Sponsor spots are open.

Sponsors put money into the same public pool as everyone else, or put up a bounty for one thing they want built. They get their name here. They get no say in the main prizes.

Wish something was free? Say so.

Ideas tell builders what people actually want. Post one, or heart the ones you would use. They carry no money and no prize of their own.

  1. Post itName the thing you wish was free. We show you what already exists, so you can say what is missing.
  2. Heart itOne tap, no account. The most-wanted ideas rise to the top.
  3. Build itBuilders see what people are asking for before they choose what to make.

Two lanes. They only meet at the payout.

The money

  1. Anyone can fund itAny amount. Today that means a public pledge; payments open once the holder is confirmed.
  2. An independent nonprofit will hold itAn independent nonprofit, never Antipaywall or its organizer. Our choice is Open Source Collective, which keeps 10% for that service. It is confirmed here before anyone can pay in.
  3. Every dollar will be listed hereEach contribution and each payout, in public, with a link to its record.

The builders

  1. Join free with GitHubOne click. No essay, no pitch, no fee, no upsell.
  2. Build in public for 7 daysIn a public repo under an open-source licence, so anyone can see when the work was done.
  3. Builders will pick the winnersEveryone who submits will get three votes, and every ballot will be published.
A named panel will check for cheatingVolunteers will review the top entries and anything flagged. They won't rank anyone, and their reasoning will be published.
Winners will be paidStraight from the pool by its holder, with every payout public.

Nine winners, not one.

Prizes are shares of whatever the pool reaches, as set out in the rules.

  • 30%1st
  • 18%2nd
  • 12%3rd
  • 6%4th
  • 6%5th
  • 6%6th
  • 6%7th
  • 6%8th
  • 10%Community Choice

Side by side.

Another hackathon is running this month. Here is how the two are set up. Its column is taken from its published rules as we read them on November 11, 2026; ours describes how this one will run. Pick the one that suits you, or enter both. If we got something wrong, tell us and we will fix it.

Ship or Die $100K HackathonAntipaywall
GoalMost profit in 30 daysBuild a free, open-source version of something people overpay for
Length30 days7 days to build, 3 days to vote
EntryFreeFree, always
Prize moneyProvided and paid by the sponsor, directly to the winnersFunded by the community and sponsors. An independent nonprofit will hold it; the organizer never will, and takes nothing
Who picks winnersMost verified profit wins. The organizers verify it, and their decisions are finalThe builders who submit will vote in public, and every ballot will be published
Checking when the work was doneReviewed by hand, including the domain's history on the Wayback MachineWork will happen in a public repo, so the commit history shows when it was done
RulesCan be updated to fix mistakes or close loopholes; changes are announcedPublished on this site, with every change listed and dated
Prizes$100,000 for 1st, a phone for 2nd, a laptop for 3rdThe pool will be split across 9 winners
Cheating reviewOrganizers may disqualify entries at their discretion, and their decisions are finalA named volunteer panel will review entries, publish its reasoning, and hear appeals in public

Pick a paywall. Take a brick out.