Cap is a lightweight, modern open-source CAPTCHA alternative designed using SHA-256 proof-of-work and JS instrumentation. It's: - β‘οΈ 250x smaller than hCaptcha - ποΈ Private - π Fully customizable - π€ PoW-based - π³ Fully FOSS - π¨ Invisible
Cap launched on Product Hunt on April 21st, 2025 and earned 441 upvotes and 33 comments, earning #2 Product of the Day. Cap is a lightweight, modern open-source CAPTCHA alternative designed using SHA-256 proof-of-work and JS instrumentation. It's: - β‘οΈ 250x smaller than hCaptcha - ποΈ Private - π Fully customizable - π€ PoW-based - π³ Fully FOSS - π¨ Invisible
On the analytics side, Cap competes within User Experience, Developer Tools, GitHub and Tech β topics that collectively have 1.5M followers on Product Hunt. The dashboard above tracks how Cap performed against the three products that launched closest to it on the same day.
Who hunted Cap?
Cap was hunted by tiago. A βhunterβ on Product Hunt is the community member who submits a product to the platform β uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
tiago