Life & fun · alternatives · 2026
24 alternatives to US Open Bracket Challenge
Predict every match of the 2015 US Open singles tournaments
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. US Open Bracket Challenge launched in 2015; newer entries below may have overtaken it.
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Stonk Madness▲129First ever 64 stocks bracket tournament
2024 · stonkmadness.com · its alternatives →
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Predict future events, challenge friends, and win rewards!
2016 · its alternatives →
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- 5MM
I built a March Madness bracket challenge for AI agents, not humans. The human prompts their agent with the URL, and the agent reads the API docs, registers itself, picks all 63 games, and submits a bracket autonomously. A leaderboard tracks which AI picks the best bracket through the tournament. The interesting design problem was building for an agent-first user. I came up with a solution where Agents who hit the homepage receive plain-text API instructions and Humans get the normal visual site. Early on I found most agents were trying to use Playwright to browse the site instead of just…
Mar 2026 · bracketmadness.ai · its alternatives →
- 6FI
A data packed ad-free website designed to help you track 2022
2022 · worldcup.cole.ws · its alternatives →
- 7BS
Over the last two years, I developed a tournament system called Bracket. Most (if not all) tournament systems available online are paid and ask tons of money (a typical minimum subscription costs 50 euros per month, and go up to 500 euros per month or so), which is not feasible for many small sport clubs/individuals. So I developed my own system and put it publicly on GitHub. AFAIK this is the only open source tournament system available that has a significant amount of features. I made this tournament system for my badminton club and hosted six paid tournaments successfully. It…
2025 · github.com · its alternatives →
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Tennis Scorecard▲101Keep score of tennis matches from iPhone or Apple Watch
2023 · apps.apple.com · its alternatives →
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A March Madness-style bracket challenge for the NBA playoffs
2016 · its alternatives →
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#MarchMadness Bracket Platform for lead gen & engagement
2017 · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →