powCAPTCHA
Next-gen captcha | anti bot & spam filter
powCAPTCHA launched on June 4, 2025 with 10 votes, #2,717 of 7,999 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
Next-gen Proof-of-Work Privacy-First CAPTCHA that stops bots and filter spam. Pure security, zero friction.
Next-gen Proof-of-Work Privacy-First CAPTCHA that stops bots and filter spam. Pure security, zero friction. Built for developers who demand robust security without compromising user experience or integration speed. Lightweight, efficient PoW challenges stop automated bots effectively while remaining invisible to users. Built-in spam detection and prevention, ensuring only genuine users can submit forms. Gathers browser fingerprint and behavioral data for sophisticated backend threat analysis. Designed with privacy in mind, powCAPTCHA does not track users or collect personal data, ensuring full compliance with GDPR. A streamlined flow from frontend challenge to backend verification.…from powcaptcha.com
Does a similar job
all alternatives →


CodeCaptcha - Hide web links behind coding challenges2022 · codecaptcha.io · ▲163Hello HN, I made this silly project over the long weekend. It’s pretty basic right now and the captchas are very easy. I plan to add captcha difficulty levels for link creators soon.

Replace CAPTCHAs with WebAuthn passkeys for bot prevention2024 · github.com · ▲71I built Nocaptcha after getting frustrated with traditional CAPTCHAs both as a user and developer. WebAuthn passkeys offered a promising alternative that's both more secure and user-friendly. What makes Nocaptcha different: - Uses WebAuthn standard instead of puzzle-solving - No need for users to remember passwords or solve puzzles - Open source Current limitation: Working with W3C WebAuthn Community Group on true passkey disposal for this use case. Looking for feedback particularly on: 1. Integration experience 2. User experience compared to traditional CAPTCHAs
More dev tools this month
the category →

open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.
Dev tools · 28d ago · github.com

Contribute to reladraw/reladraw development by creating an account on GitHub.
Dev tools · 26d ago · github.com
OpenBot▲362Grok Bot alternative: free, local, open-source, multiplayer
Dev tools · 23d ago · openbot.run
Talanoa▲346Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…
Dev tools · 21d ago · talanoa.email
CoreSpeed▲332One MCP for everything your agents need: apps, memory, tools
Dev tools · 28d ago · corespeed.io
Source: Product Hunt launch ↗
Launched alongside, June 2025
the whole month →- IM
Hey HN! Pilots everywhere are required to keep a logbook of all their flying hours, aircraft, airports, and so on. Since I track everything digitally (some people still just use paper logbooks!), I put together some data visualizations and a few 3D globes to show my flying history. This globe is probably my favourite so far: https://jameshard.ing/pilot/globes/all If you’ve got ideas for other graphs or ways to show this kind of data, I’d love to hear them!
Life & fun · 2025 · jameshard.ing

Stunning presentations with AI. No design skills required.
AI · 2025 · chroniclehq.com

Build native mobile apps for iOS and Android without code.
Dev tools · 2025 · bble.io


All your connections, across all your socials.
AI · 2025 · pally.com

I was the main contributor to workout.lol, an open-source fitness app to easily build a workout routine. The project had traction (1.4k GitHub stars, 95 forks, ~20K visits/month), but was eventually sold due to video licensing hurdles. The new owner stopped maintaining it, and the repo went abandoned. Over the next 9 months, I sent 15 emails to try to save it : no replies. Feature requests & issues were ignored. The community was left with a "broken" tool let's say. I couldn't just let it die So I built the new version from scratch with the same open-source spirit, but a better…
Dev tools · 2025 · github.com