Education & Reference
In this category are tools to study and learn a language, dictionaries and translation services, mathematics tools (such as calculators and equation editors), astronomy (sky maps, for example), and any other matter you are interested in. Moreover, this section also contains references where you can find answers to your questions, including encyclopedic and tutorial websites.
Most popular apps
AlternativeTo
AlternativeTo let you find new Windows, Mac, Linux, online and mobile software based on applications you already know instead of useless categories. AlternativeTo is a new approach to finding good software.
Wikipedia
Free content, multilingual online encyclopedia written and maintained by a community of volunteers through a model of open collaboration, using a wiki-based editing system.
Debian
The Debian Project is an association of individuals who have made common cause to create a free operating system. This operating system that we have created is called Debian.
Khan Academy
Khan Academy is not-for-profit with the goal of changing education for the better by providing a free world-class education to anyone anywhere.
Stack Overflow
Stack Overflow, part of Stack Exchange, is a free, community-driven, reputation-based Q & A site for computer programmers. No membership is required to ask questions or provide answers to questions by others.
SpeedCrunch
SpeedCrunch is a free, fast, high precision open source algebraic calculator with an intuitive interface and many features, such as variables, syntax highlighting, functions, persistent input history & more.
Duolingo
Join over 300 million learners on Duolingo, the most popular way to learn languages! It’s free, fun and effective. The secret? Duolingo feels like a game and makes sure you stay motivated.
Grammarly
Grammarly Editor is an automated proofreader that corrects contextual spelling mistakes, checks for more than 250 common grammar errors, enhances vocabulary usage, and suggests citations.
