Discover Technology Worth Knowing

Browse

• Open-source projects405 open-source projects, newest first. Each has a plain-language summary and a link to the original.
• Useful tools and websites34 tools and websites worth bookmarking. Each page explains what it is, why it helps and who it is for.

New finds

The most recent additions to the collection.

• ProjectgmscoreA free Android compatibility layer for apps built for Google Play Services, letting them run where Play Services is unavailable.
• Projectbluetooth_gnssBluetooth GNSS links Android phones to external Bluetooth receivers so location data can flow into apps and workflows.
• ProjectkronosKronos is a foundation model for financial K-line data. It helps forecast market sequences from OHLCV inputs and is meant for market forecasting and research.
• Projectffmpeg-skillA local FFmpeg toolkit for editing and checking video and audio with coding agents or directly, without uploading media or using API keys.
• ToolArchive.todayA web archiving service that takes a snapshot of a page you submit and stores both a text copy and an image copy. Each snapshot gets a short link that stays online.
• ToolScreenshot GuruAn online tool that captures a screenshot of any public web page as a high-resolution PNG. It handles long pages that extend below the fold, and it also works for tweets.
• ToolJust the RecipeA tool that takes a recipe page and shows only the ingredients and instructions. It removes the life story, popups and other clutter that surround recipes on many sites.
• ToolFutureMeA site where you write a letter, pick a delivery date and have it emailed to you later. It also offers public letters to read and prompts if you need ideas.
• LinkThe Simple Idea Behind Physics’ Most Terrifying EquationA short explainer on the idea behind one of physics' most feared equations.

Categories

How it works

1. 1

   Discover

   Interesting projects and tools are picked by hand as they turn up.

2. 2

   Filter

   Only things worth a second look are kept.

3. 3

   Understand

   Each entry gets a short explanation in English, Japanese and Chinese.

4. 4

   Organize

   Entries are grouped by topic so you can browse by what you need.

5. 5

   Maintain

   Projects are checked against their originals every day, and new additions are explained as they arrive.

Latest deep dives

• How to use Claude Code with Serena and ccusage in 3 minutes · August 20, 2025
• The Rarely Known Fact: Using Google Service Account for M2M JWT Authentication and Authorization · March 20, 2025
• How to Judge if a Time Series Is a Martingale? Using the Black–Scholes Model as an Explanation · February 23, 2025
• A Beginner's Guide to Diffusion model · February 15, 2025

All posts