Dev tools · alternatives · 2026
24 alternatives to P-captcha
Open source proof-of-work captcha for bot protection
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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- 3RC
2014 · hashcash.io · its alternatives →
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- 7RC
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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Google's update to CAPTCHA just asks if you're robot
2014 · its alternatives →
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- 10FA
2020 · friendlycaptcha.com · 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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CAPTCHA that filters out humans and only lets programs pass
2018 · its alternatives →
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Race to solve CAPTCHAs, last player standing wins
Apr 2026 · sean-reid.github.io · its alternatives →
- 15PO
We built Procaptcha to make sure there's an actually good alternative to Google's ReCAPTCHA that's not a complete nightmare for the end user. Crucially we're not just a giant ad network like almost all CAPTCHA providers [1]. Like with other CAPTCHA providers it's simple to set up, you just change a couple of tags [2]. We've got a few different CAPTCHA types at the moment, all running on a distributed network of nodes with no user tracking. [1] https://prosopo.io/articles/stop-giving-your-website-data-aw... [2] https://github.com/prosopo/captcha
2024 · prosopo.io · its alternatives →
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A CAPTCHA gate for noisy GitHub PRs
Jun 2026 · pr-captcha.aryaabyte.workers.dev · its alternatives →
- 18CH
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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BOTCHA▲3Traditional CAPTCHAs keep bots out.This one keeps humans out
Feb 2026 · botcha-verify.vercel.app · its alternatives →
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PG has posted about improving social networks using something like an "intellectual CAPTCHA" many times [1][2][3][4] - "Make users pass a test on basic concepts like the distinction between necessary and sufficient conditions before they can tweet." I felt the same way. So I built one using a mix of simple math, logic, and Twitter/X Community Noted posts. Try sample questions here - https://mentwire.com/sample - without signing up. - Invites are temporarily open to HN users. - Onboarding test + one daily question before accessing feed, post or reply. - Posts authors are…
Apr 2026 · mentwire.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 →