Cool Tech

GDPR Compliant Captcha and Bot Protection Secure your data and users with the privacy-first alternative to reCAPTCHA. ALTCHA eliminates tracking, cookies, and fingerprinting, delivering a robust, accessible, and globally compliant security without a single puzzle. 100% self-hosted • No external calls • No data sharing.

ShadeMap is a global simulation of mountain, building and tree shadows for any date and time. ShadeMap calculates shadow positions in realtime and displays them on a map. ShadeMap can display how many hours of sun or shadow a specific location gets over the course of a day and even […]

It’s time for a new H5P content type! The HAW Hamburg as part of the Hamburg Open Online University liked StoryMap by Knightlab, but even though it could be used a library and then wrapped in an H5P content type – just like Timeline – we did not follow that […]

Play Shockwave content directly from your browser. Experience the nostalgia of Shockwave directly from your browser. This extension makes legacy Shockwave content work effortlessly, requiring no extra setup. DirPlayer identifies and plays all Shockwave elements on a webpage, transforming your browser into a Shockwave emulator that works out of the […]

Give your knowledge a home on the web. The easiest way to publish your wiki, knowledge base, documentation, or digital garden. Publish is built into Obsidian so you can write, collaborate, and publish seamlessly.

Mixboard is an AI-powered concepting board that helps you explore, expand, and refine your ideas. h/t Bryan Alexander scanning https://aiandacademia.substack.com/p/ai-tech-developments-in-late-2025

Joplin is an open source note-taking app. Capture your thoughts and securely access them from any device.

A javascript library to transform HTML document into beautiful print-ready pdf.

Explore Wikipedia data with a suite of wiki-twisting tools! The tools include: Wikipedia Seismograph Wikipedia Hot Topics WikiCat Main Characters Wikipedia Attention Surfer Wiki Trend Check Wiki Category Chronology Wikidata Quick Dip RoloWiki h/t https://researchbuzz.masto.host/@researchbuzz/115588450968590155

Welcome to the open source Citation Style Language (CSL) project! Our goal is to facilitate scholarly publishing by automating the formatting of citations and bibliographies. We develop the Citation Style Language and maintain a crowdsourced repository with over 10,000 free CSL citation styles.

Between 1939 and 1941, the Works Progress Administration collaborated with the New York City Tax Department to collect photographs of most buildings in the five boroughs of New York City. In 2018, the NYC Municipal Archives completed the digitization and tagging of these photos. This website places them on a map. Zoom in! […]

Help listeners follow your show wherever they get their podcasts. Instantly create a beautiful, universal link that sends listeners directly to your podcast on their favorite apps- no signup needed.

In the "you would not expect this to be mapped but it is" — the most up-to-date definitive source for every pool table in New York City. "I'll admit, it's kind of an impossible task, with places changing so often and NYC being massive. But, I've wanted something like this […]

During this brief moment of silence, project Dawn Chorus was brought to life by the Naturkundemuseum Bayern with BIOTOPIA LAB and the Foundation Arts and Nature (Nantesbuch), with support from the Max Planck Society. During an extremely short timeframe, a number of people came together to launch the project, inspired […]

The first Indigenous robot… designed entirely by Indigenous leaders. A personal, wearable, and interactive Indigenous language revitalization robot that responds to being spoken to in the voices of Indigenous children in the endangered Indigenous language Anishinaabemowin which utilizes ethical, sustainable, and internally developed AI. The students build the robots themselves. The […]

Poly Haven is a curated public asset library for visual effects artists and game designers, providing useful high quality 3D assets in an easily obtainable manner. There are no paywalls, accounts or email forms required, just download an asset and use it without worry. All assets here are CC0, which […]

On a mission to make robotics education more accessible, affordable, and inspiring, Martin Klomp led the development of MIRTE—a low-cost, fully open-source educational robot. Through this project, he aims to help students — from primary school to university — engage with technology in meaningful, hands-on ways. Unlike many educational robots […]

Edit like a pro, without the complexity. Cut, sequence, and transition your clips on a beautifully simple timeline. Add text to tell a powerful story. For the first time ever, video editors can collaborate without friction. No more wasting time on rendering or sending large files. Send a link to […]

Turn parking spaces into trees — and help Berlin grow a million by 2040! You’ve got 60 seconds

Sort your students into the most optimal groups. Use our survey maker to collect information from your students, upload to gruepr, and our algorithm will find you the best set of teams. Open source yay