Head-to-Head Comparison · Alternative to reCAPTCHA · 🤖 automation
reCAPTCHA vs Cap
Lightweight open-source CAPTCHA solution using SHA-256 proof-of-work. 250x smaller than hCaptcha, fully customizable, and privacy-focused with zero telemetry. Here is how Cap ($0/mo open source) stacks up against reCAPTCHA ($15/mo) across cost, hosting, data privacy, and real-world trade-offs.
Cap is a verified Open Source-licensed open-source replacement for reCAPTCHA. Switching from reCAPTCHA ($15/mo) saves $180/yr per solo seat, or $900/yr for a 5-person team. Deployment: Runs on Self-host.
The catch: Requires self-hosting setup, updates, and server maintenance compared to managed reCAPTCHA.
reCAPTCHA vs Cap Specifications
facts verified 2026-11-07
| Dimension | reCAPTCHA (Paid) | Cap (Replacement) |
|---|---|---|
| Monthly Price | $15 / mo | $0 / mo |
| 1-Year Cost (1 seat) | $180 / yr | $0 / yr (Save $180) |
| 1-Year Cost (5 seats) | $900 / yr | $0 / yr (Save $900) |
| 1-Year Cost (10 seats) | $1,800 / yr | $0 / yr (Save $1,800) |
| Source & License | Proprietary SaaS | open source Open Source |
| Where It Runs | Vendor Cloud | Self-host (your server) |
| Platforms | Web / Cloud | webself-hosteddocker to self-host |
| GitHub Stars | — | ★ 8.3k (active nov 2026) |
Deep Dive: Switching from reCAPTCHA to Cap
Trade-offs, installation & data architecture
What you trade away
Requires self-hosting setup, updates, and server maintenance compared to managed reCAPTCHA.
How to deploy Cap
Clone https://github.com/tiagozip/cap or deploy with Docker Compose
What it takes to run
Deploy via Docker or binary release from GitHub and configure environment variables.
Where your data lives
All application data and configuration live on your own server or local database.
Why fork Cap instead of vibe-coding a reCAPTCHA clone?
Instead of paying recurring SaaS fees for reCAPTCHA or rebuilding it from scratch, deploy one of the 6 battle-tested open-source alternatives like Cap.
reCAPTCHA vs Cap FAQ
Is Cap a good free alternative to reCAPTCHA?+
Yes. Cap is a verified open-source (Open Source) replacement for reCAPTCHA. Lightweight open-source CAPTCHA solution using SHA-256 proof-of-work. 250x smaller than hCaptcha, fully customizable, and privacy-focused with zero telemetry.
What is the catch when switching from reCAPTCHA to Cap?+
Requires self-hosting setup, updates, and server maintenance compared to managed reCAPTCHA.
How much do you save switching from reCAPTCHA to Cap?+
reCAPTCHA costs $15/mo ($180/yr) per seat, whereas Cap is $0/mo. Switching saves $180/yr for a solo user, $900/yr for a 5-person team, and $1,800/yr for a 10-person team.
How do I install or self-host Cap instead of reCAPTCHA?+
Install: Clone https://github.com/tiagozip/cap or deploy with Docker Compose. Setup: Deploy via Docker or binary release from GitHub and configure environment variables.
