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Cap vs Private Captcha

Learn how Cap and Private Captcha differ in their key features, development activity, technology stack and community adoption, so you can decide which of these captcha & bot protection tools is best for you.

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Favicon of Cap

Cap

Lightweight open-source CAPTCHA solution using SHA-256 proof-of-work. 250x smaller than hCaptcha, fully customizable, and privacy-focused with zero telemetry.
7,688stars+237(+3.2%)

Last 30 days

Screenshot of Cap
Favicon of Private Captcha

Private Captcha

Privacy-first CAPTCHA service that blocks bots while keeping forms accessible. No puzzles, no tracking, no cookies - just invisible cryptographic protection.
193stars+7(+3.8%)

Last 30 days

Screenshot of Private Captcha

Detailed Comparison

Both Cap and Private Captcha have their unique strengths and serve similar purposes effectively. Consider your specific needs regarding popularity, growth, activity, technology, maturity, licensing and features when making your decision.

Cap wins
Community & Popularity

Cap significantly outpaces Private Captcha in community adoption with 7,688 stars compared to 193 stars on GitHub. This 39.8x difference suggests Cap has a much larger and more active community. In terms of developer contributions, Cap has 557 forks, indicating moderate developer engagement.

Private Captcha wins
Growth Momentum

Private Captcha is growing faster, adding 7 stars in the last 30 days (+3.8%) against adding 237 stars for Cap (+3.2%). Private Captcha is the smaller project of the two, so it is closing the gap rather than extending a lead.

Comparable
Development Activity

Both projects show recent activity, with Cap last updated 2 days ago and Private Captcha 1 day ago.

Comparable
Technology Stack

Both tools share common technology foundations, being built with JavaScript, CSS, Typescript. However, they differ in their additional technology choices: Cap uses Rust, Vue while Private Captcha leverages Bash, Golang.

Private Captcha wins
Project Maturity

Private Captcha has been in development longer, starting 3 years ago, compared to Cap which began 2 years ago. This 1.1-year head start suggests Private Captcha may have more mature features and established processes.

Cap wins
Licensing

Cap is licensed under Apache-2.0, while Private Captcha's license terms are not publicly specified.

Comparable
Use Cases & Features

Both tools serve similar use cases in CAPTCHA & Bot Protection.

Comparable
Hosting & Deployment

Both Cap and Private Captcha offer self-hosting capabilities, giving you full control over your data and infrastructure.