Procaptcha
A blockchain-based CAPTCHA solution offering improved security, user experience, and resistance to bot attacks for web applications.
Technical Profile & Specs
verified 2026-11-07
- Cost
- $0 / forever (Open Source)
- License
- Open Source
- Hosting Model
- Local (on your machine)
- Platforms
- desktopcross-platformone-click install
- Installation
- Clone https://github.com/prosopo/captcha or deploy with Docker Compose
- Operational Setup
- Download the native package or installer for your operating system.
- Where Your Data Lives
- All application data lives locally on your own machine.
- The Catch / Trade-off
- Community-driven open source project without dedicated enterprise SLAs.
Replaces 3 paid apps
up to $45/mo ($540/yr) in subscriptions
Procaptcha FAQ
Common questions
Is Procaptcha free and open source?+
Procaptcha is an open-source tool licensed under Open Source that runs on local. A blockchain-based CAPTCHA solution offering improved security, user experience, and resistance to bot attacks for web applications.
What paid software does Procaptcha replace?+
Procaptcha serves as a free replacement for 3 paid SaaS applications: Cloudflare Turnstile, hCaptcha, reCAPTCHA, saving up to $45/month ($540/year) in subscription bills.
How do you install and set up Procaptcha?+
Installation: Clone https://github.com/prosopo/captcha or deploy with Docker Compose. Setup notes: Download the native package or installer for your operating system.
What is the catch or trade-off with Procaptcha?+
Community-driven open source project without dedicated enterprise SLAs.