Get details on arguments for commandline tools through explainshell's sleek, web-based interface. The web app is totally free and source code is available for download through GitHub.
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Get details on arguments for commandline tools through explainshell's sleek, web-based interface. The web app is totally free and source code is available for download through GitHub.

Translate text, voice, audio, images, documents, and web pages in 112+ languages even without internet. Save bookmarks, sync across devices.

Mathway provides students with the tools they need to solve their math problems. With tens of millions of problems already solved, Mathway is the #1 online problem solving resource available for students, parents, and teachers.

Where technology meets a simpler, more convenient way to shop Best Buy. Now shopping is as easy as tapping on your phone.



All the most useful Rules of Algebra in one place: easy to understand, free, searchable, ad-free, open-source, and accompanied by informative descriptions & examples.

Artikulate is a pronunciation trainer that helps improving and perfecting a learner's pronunciation skills for a foreign language. It provides courses with native speaker recordings for several training languages.

AnonymousOverflow allows you to view StackOverflow threads without the cluttered interface and exposing your IP address, browsing habits and other browser fingerprint data to StackOverflow.

Online flashcards are a great way to study! Cram is your number one online educational resource.

Fast and secure translation on your local machine with a GUI, powered by marian and Bergamot.


Cratecode is a website that helps people learn to code. It uses interactive online lessons and videos to teach web development and JavaScript. One of its main strategies is non-linear-learning, which allows students to take their own programming journey and learn what they want...

Guru is a company wiki that works in your workflow, so the information you need to do your job is always at your fingertips.

Learn a language through mass exposure to useful vocabulary in context.



Think of this web site as a search engine for words and phrases: If you have a word for which you'd like a definition or translation, we'll quickly shuttle you to the web-based dictionaries that define or translate that word.

Toucan will teach you Spanish, German, Italian, Portuguese and French without ever opening a textbook.

Peer 2 Peer University (we usually just say P2PU) is a grassroots network of individuals who seek to create an equitable, empowering, and liberating alternative to mainstream higher education.
InfraNodus can visualize any research notes, ideas, texts, even the Google search results on a certain topic as a text network. The words are the nodes and their co-occurrences are the connections between them.

Feed your brain, not the algorithm. Use the power of AI to create lessons, share them, and inspire others.

Graph is an open source application used to draw mathematical graphs in a coordinate system. Anyone who wants to draw graphs of functions will find this program useful. The program makes it very easy to visualize a function and paste it into another program.

Infogalactic is an Internet-based, free-content encyclopedia project that is a dynamic fork of Wikipedia and improves upon the online encyclopedia's model of openly editable content. Infogalactic's pages are interlinked in order to connect the user to related pages with...

SpanishDict is a Spanish-learning website that offers a Spanish to English dictionary, a Spanish-English translator, video lessons, flashcards, and more.

Lokalize is the localization tool for KDE software and other free and open source software. It is also a general computer-aided translation system (CAT) with which you can translate OpenDocument files (*.odt).

Unified environment enables schematic capture, PCB layout, mixed-signal simulation, signal integrity analysis, real-time 3D editing, and ECAD-MCAD collaboration.

Worldometers is run by an international team of developers, researchers, and volunteers with the goal of making world statistics available in a thought-provoking and time relevant format to a wide audience around the world.
The gEDA project has produced and continues working on a full GPL'd suite and toolkit of Electronic Design Automation tools. These tools are used for electrical circuit design, schematic capture, simulation, prototyping, and production.

This electronic circuit simulator is highly interactive giving the feeling of playing with real components. It's very helpful for experimentation and visualization. It's a desktop version of the Circuit JS.
