We publish activity books containing exciting puzzles and brainteasers every day! Our books are free to download and share.
Vertopal is an online platform for converting computer files to a variety of file formats. Our main goal is to provide the best conversion quality without the need to install third-party applications.
The first open-source infrastructure platform that puts developer experience first. With an elegant, unified UI for all your tooling, Backstage gets your developers up and running faster, which makes them happier.
The graphing calculator that makes learning maths easier Ergonomic, open source and evolutive, the NumWorks graphing calculator is designed for today’s needs with today’s technologies. NumWorks makes learning maths easier for everyone: professors or students… and it perfectly su…
Stackfoss is a community-driven Q&A platform dedicated to free and open-source software development. With a collaborative and inclusive approach, Stackfoss aims to foster a supportive community that encourages knowledge sharing and open-source development. Users can ask question…
LLN is a chrome extension that gives you superpowers over Netflix. It makes studying languages with films/series more effective and enjoyable.
The best open source password manager of the moment, endorsed by privacytools.io they have a generous free tier that is more than enough for most people.
Users: Comrade is a privacy-first browser extension that displays highly relevant product recommendations and pays you instantly when you visit them. Advertisers: Reach your audience in real-time. In the right place, at the right time, with the right message.
A library for audio and music analysis and feature extraction, can be used to study the classification, separation, music information retrieval (MIR), ASR and other tasks in the audio field.
A subscription tier above Super that gives you access to your own personal, AI-powered language tutor through Explain My Answer and Roleplay, two features developed with the latest OpenAI technology.
For every student, every classroom.
Real results. We’re a nonprofit with the mission to provide a free, world-class education for anyone, anywhere.
GODOT is a 2D and 3D cross-platform compatible game engine released as open source software under the MIT license.
Use our collaborative editor to create motion graphics that respond to different states and user inputs. Then load your animations into apps, games, and websites with our open-source runtimes.
function musicFor(task = 'programming') { return `A series of mixes intended for listening while ${task} to focus the brain and inspire the mind.`; }
Self-host your podcasts with ease, keep control over what you create and talk to your audience without any middleman. Your podcast and your audience belong to you and you only.
With Histogram maker, you can make beautiful and visually satisfying Histograms with just a few clicks. It is really easy to use. You don’t have to deal with traditional complex applications anymore. Simply enter the data and your Histogram will be ready. You can configure the o…
SemanticDiff is a programming-language aware diff for Visual Studio Code. The extension helps software developers understand code changes faster by hiding style-only changes, detecting moved code blocks as well as refactorings. Check out the demo on our website to discover how S…
Mastodon is a social network based on open web protocols and free, open-source software. It is decentralized like e-mail.
Crystal is a programming language that is similar to Ruby, but with a focus on performance. It is designed to be easy to read and write, like Ruby, but also to be fast and efficient like C or C++.