Life & fun · alternatives · 2026
24 alternatives to Caputchin
A CAPTCHA replaced by a quick game humans win and bots can't
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
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I built Nocaptcha after getting frustrated with traditional CAPTCHAs both as a user and developer. WebAuthn passkeys offered a promising alternative that's both more secure and user-friendly. What makes Nocaptcha different: - Uses WebAuthn standard instead of puzzle-solving - No need for users to remember passwords or solve puzzles - Open source Current limitation: Working with W3C WebAuthn Community Group on true passkey disposal for this use case. Looking for feedback particularly on: 1. Integration experience 2. User experience compared to traditional CAPTCHAs
2024 · github.com · its alternatives →
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Race to solve CAPTCHAs, last player standing wins
Apr 2026 · sean-reid.github.io · its alternatives →
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CAPTCHA that filters out humans and only lets programs pass
2018 · humansnotinvited.com · its alternatives →
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Hi HN! I'm the developer of rdx, a mildly popular ad-free, privacy and user friendly Reddit client. This time, I made something for a very specific use case: solving chess puzzles with no internet. Why? Well, my Wi-Fi is terrible in the bathroom—and that's where I do some of my best thinking. I tried printing out “mate in X” puzzles to solve offline, but they weren’t fun without interaction. So I built OffChess. OffChess is an iPhone/Android app that contains over 100,000 chess puzzles, fully offline and completely ad-free. You can solve puzzles by category (Mate in…
2025 · offchess.com · its alternatives →
- 9RC
2014 · hashcash.io · its alternatives →
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Hello HN, I made this silly project over the long weekend. It’s pretty basic right now and the captchas are very easy. I plan to add captcha difficulty levels for link creators soon.
2022 · codecaptcha.io · its alternatives →
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You can get a 2h free trial by solving a proof-of-work captcha when topping up your account for the first time. If you'd like to learn more, an independent interview was posted a couple of weeks ago [1], and the FAQ [2] has a lot of information as well. For the source code sharing, we've talked with lawyers and are inclined to no longer require the NDA/NCC for privacy reasons shared with us before (signing requires identification), but instead use a source-available permissive license that doesn't allow competition, like PolyForm Shield [3] (we do still have about 6 months before…
Jun 2026 · uruky.com · its alternatives →
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A 60-second game about LLM permission fatigue. Claude Code needs your approval — but are you really reading the commands?
May 2026 · llmgame.scalex.dev · its alternatives →
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Voronoi Go▲158I posted once before but wanted to share again because a lot has changed. There's now a fairly strong bot to play against (contributed by a community member) and also correspondence games. The combination of these things helps a bit in finding people to play against.
Aug 2026 · voronoigo.com · its alternatives →
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Captcharoo▲88Proof of humanity, check that you're not talking with an AI
2023 · captcharoo.com · its alternatives →
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Google's update to CAPTCHA just asks if you're robot
2014 · cloud.google.com · its alternatives →
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GeeTest▲68Smarter way to stop bad bots, protect websites, apps & APIs
2021 · geetests.com · its alternatives →
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Ending the CAPTCHA agony in a unique way.
2013 · areyouahuman.com · its alternatives →
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A free browser puzzle that turns CAPTCHAs into play
Jul 2026 · captchagame.cc · its alternatives →
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Hassle-free CAPTCHA. Stop Bots, Stay Secure.
2023 · dashboard.leminnow.com · its alternatives →
- 23WW
2019 · wehatecaptchas.com · its alternatives →
- 24TC
2011 · thecaptchaexperiment.com · 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 →