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.
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.
Encyclopædia Britannica
Anki is a program which makes remembering things easy. Because it is a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the amount you learn.
Zim brings the concept of a wiki to your desktop. Store information, link pages and edit with WYSISYG markup or directly typing some lightweight markup syntax and see it previewed as-you-type. Creating a new page is easy by either clicking on the "Create new note"...
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.
Translate instantly across 100+ languages with real-time input, voice on mobile, and offline options. Free with Google integration.
DeepL Translatorand
Search engine of shadow libraries: books, papers, comics, magazines. Z-Library, Library Genesis, Sci-Hub. Fully resilient through open source code and data. Spread the word: everyone is welcome here!.
A free, LaTeX-native workspace that integrates GPT-5.2 directly into scientific writing and collaboration.
ChatGPT Translate is a web-based tool that instantly detects languages and provides seamless AI-powered translations for text input.
Google Translate
Open-source app launcher with fast performance, customisable UI, web search, calculator, clipboard history, no AI integration, and macOS support.
Microsoft PowerToys
Hivemind is an AI-powered study app that transforms learning into an experience similar to scrolling through social media. Instead of using traditional flashcards, it presents educational content through interactive posts, memes, quizzes, and short explanations designed to make...
NotebookLM
Grokipedia is an online encyclopedia that is community driven and actively fact checked.
A powerful desktop application for educators and authors to build rich, interactive language courses.
