Alternatives

Products that do what Procaptcha – Open-source, privacy preserving and frictionless CAPTCHA does

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

1
ZENCAPTCHA▲115
Privacy-first bot & spam defense, GDPR compliant CAPTCHA
2023
2
No CAPTCHA reCAPTCHA▲181
Google's update to CAPTCHA just asks if you're robot
2014
3
reCAPTCHA v3▲222
The next generation reCAPTCHA
2018
4CH
CodeCaptcha - Hide web links behind coding challenges▲163
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
5
adCAPTCHA▲148
Secure your site, elevate your brand, boost ad revenue
2024
6
WeHateCaptchas▲208
Keep the bots out without annoying your users
2019
7
CodebaseChat▲207
Create a GPT chatbot for any GitHub repo in just 30 seconds
2023
8
CapeChat▲248
Keep sensitive data private while still using ChatGPT
2023
9
Humans Not Invited▲237
CAPTCHA that filters out humans and only lets programs pass
2018
10
Are You a Human?▲67
Ending the CAPTCHA agony in a unique way.
2013
11
PayMeForMyAI▲167
Build and monetize GPT Bots without code
2024
12
Graboxy maze CAPTCHA▲122
Brandable captcha that is fun & easy to solve
2021
13
Keybase for Chrome▲174
A secure chat button for every profile
2017
14
HuggingChat▲144
The smart router for open-source models
Oct 2025
15FA
FriendlyCaptcha – a privacy friendly proof-of-work based CAPTCHA▲9
2020 · friendlycaptcha.com
16
GPTRecap▲134
The Spotify Wrapped of ChatGPT. See your AI life.
2025
17
Lakera▲131
Secure your conversations with ChatGPT
2023
18
EphCaptcha▲1
A CAPTCHA experience users won’t hate
6d ago · ephcaptcha.com
19
Re:plain▲95
The simplest live chat in the world
2018
20
Keychat▲108
Start a free secure chat with anyone without signing up
2020
21
Asora▲108
Stop ads, restore privacy, earn crypto.
2018
22
OmniChat by Freshchat▲98
Engage, sell, and support from anywhere
2018
23RC
Replace CAPTCHA with Proof-of-Work▲89
2014 · hashcash.io
24
Asora Ad-Blocker▲71
Ad-free safe browsing that pays.
2018

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