Head-to-Head Comparison · Alternative to Cloudflare Turnstile · 🤖 automation
Cloudflare Turnstile 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 Cloudflare Turnstile ($15/mo) across cost, hosting, data privacy, and real-world trade-offs.
Cap is a verified Open Source-licensed open-source replacement for Cloudflare Turnstile. Switching from Cloudflare Turnstile ($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 Cloudflare Turnstile.
Cloudflare Turnstile vs Cap Specifications
facts verified 2026-11-07
| Dimension | Cloudflare Turnstile (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 Cloudflare Turnstile to Cap
Trade-offs, installation & data architecture
What you trade away
Requires self-hosting setup, updates, and server maintenance compared to managed Cloudflare Turnstile.
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 Cloudflare Turnstile clone?
Instead of paying recurring SaaS fees for Cloudflare Turnstile or rebuilding it from scratch, deploy one of the 6 battle-tested open-source alternatives like Cap.
Cloudflare Turnstile vs Cap FAQ
Is Cap a good free alternative to Cloudflare Turnstile?+
Yes. Cap is a verified open-source (Open Source) replacement for Cloudflare Turnstile. 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 Cloudflare Turnstile to Cap?+
Requires self-hosting setup, updates, and server maintenance compared to managed Cloudflare Turnstile.
How much do you save switching from Cloudflare Turnstile to Cap?+
Cloudflare Turnstile 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 Cloudflare Turnstile?+
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.
