Learn how to design systems at scale and prepare for system design interviews

A growing collection of open-source illustrations for your page-not-found message. Choose a scene to inform the user of the error occurred with futuristic elements and cute characters. All scenes are compatible with Sketch and Figma.

A tool powered by GPT-3.5/4 that translates code from one language to another. You can also use natural language to generate code and get natural language explanations from code.

Habo is a free, open-source habit-tracking app designed with simplicity in mind. With a clean and intuitive interface, Habo helps you focus on building better habits without unnecessary distractions.

Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.

The A5 notebook size integrates complete PC functions with a retro-futurism design, a 6.8-inch ultra-wide screen, classic QWERTY keyboard, necessary interfaces, high-speed wireless, long battery life, and even includes a practical thermal printer.

RPCS3 is an experimental open-source Sony PlayStation 3 emulator and debugger written in C++ for Windows and Linux. RPCS3 began development in May of 2011 by its founders, DH and Hykem.

Better language generation, more layers of safety, a broad set of partners – and a license that authorizes commercial use.

Sandstorm is an open-source platform that allows users to self-host web-based productivity apps securely. It provides a user-friendly interface for installing and managing apps, with automatic updates and unified access control. Sandstorm containerizes each app or document in it…

Jitsu is an open-source Segment alternative with event collection and API connectors. It can stream and collect the data to any data warehouse of your choice and can be deployed in 2 minutes.

Omatsuri is open source all-in-one browser application with 9 frontend and design focused tools. This app is all yours – no tracking, no spying, no ads, no servers – it works in your browser only.

Remix Icon is a set of open-source neutral-style system symbols elaborately crafted for designers and developers. All of the icons are free for both personal and commercial use.

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.

This book offers a clear and organized introduction to programming and JavaScript, explaining foundational concepts in simple language. Detailed explanations and examples accompany each topic, and exercises are included at the end for practice.

Ghostfolio is a lightweight wealth management application for individuals to keep track of stocks, ETFs or cryptocurrencies and make solid, data-driven investment decisions. The source code is fully available as open source software (OSS).

Medusa is an open source headless commerce platform. Use our building blocks and customize your setup in any way you want. Easy to set up with plug-n-play integrations to payments, CMSs, shipping, analytics etc. - Take ownership of your commerce stack

Private Detector™ works by automatically blurring a potential nude image shared within a chat on Bumble. You’ll be notified, and it’s up to you to decide whether to view or block the image. You can also easily report it to Bumble.

Monica is an open-source personal CRM - or Personal Relationship Management system.