Education & Reference

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.

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.

Wolfram Alpha is a "Computational Knowledge Engine" - different from a search engine, it answers factual queries directly by computing the answer from structured data, rather than providing a list of documents or web pages that might contain the answer.

Translate instantly across 100+ languages with real-time input, voice on mobile, and offline options. Free with Google integration.

Leading online translator with neural networks capturing subtle nuances, blind-tested to outperform competitors 3:1. Secure data compliance with EU laws.

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!.

Anki flashcards on Android. Your secret trick to achieve superhuman information retention.

Students Notes is a note-taking app designed for online learners to overcome information overload, organization, and memorization challenges.

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.

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.

Kiwix enables you to have the whole Wikipedia at hand wherever you go! You don't need Internet, everything is stored on your computer, USB flash drive or DVD!.

Gamify language learning with Duolingo, offering over 30 languages for free. Practice vital skills with intelligent chatbots and community rewards.

The best browser for your Mac is the one that comes with your Mac. Safari is faster and more energy efficient than other browsers. Handy tools help you save, find, and share your favorite sites. Built-in privacy features help keep your browsing your business.

Ibis is a federated encyclopedia which uses the ActivityPub protocol, just like Mastodon or Lemmy. Users can create, browse, edit articles and use many other features. If you want to start a wiki for a TV series, a video game, or an open source project, then Ibis is for you!

Quarkdown is a modern Markdown-based typesetting system, designed around the key concept of versatility, by seamlessly compiling a project into a print-ready book or an interactive presentation. All through an incredibly powerful Turing-complete extension of Markdown, ensuring...

Offers real-time grammar checks, generative AI drafting, and comprehensive feedback on clarity, tone, and style for confident and polished writing.

Self-hosted archiving platform saving web pages in multiple formats, supporting media, PDF, screenshot, DOM, bookmarks import, and browsable offline archives.

Online platform with self-paced courses from universities and organizations, featuring certificates, degree programs, free and paid options, and skill development.

Enhances English and German writing by providing suggestions for phrasing, tone, style, and grammar while retaining authenticity.

KiCad is an open source software suite for electronic design automation (EDA) - designing schematics of electronic circuits and printed circuit boards (PCB). KiCad is developed by Jean-Pierre Charras. And features an integrated environment between schematic capture, bill of...

Introducing Fossify Calculator – your versatile and efficient tool for all your calculation needs. Enjoy a stylish, modern design paired with powerful functionality, perfect for both simple calculations and more complex tasks like currency conversion.

LyX is a document processor that encourages an approach to writing based on the structure of your documents (WYSIWYM) and not simply their appearance (WYSIWYG). LyX combines the power and flexibility of TeX/LaTeX with the ease of use of a GUI.

GoldenDict is an open-source dictionary program for PC computers that gives translations of words and phrases for different languages. It allows use of several popular dictionary file formats simultaneously.