Download and solve practice problems in over 30 different languages. For code newbies and experienced programmers.


Download and solve practice problems in over 30 different languages. For code newbies and experienced programmers.


Introducing Asakiri, a powerful desktop application for educators and authors. Build rich, interactive learning experiences with performance, flexibility, and total creator freedom.

Brilliant.org, also known as Brilliant, is a website and associated community that features problems and courses in mathematics, physics, quantitative finance, and computer science.




Duolingo Math is an interactive learning platform that incorporates Duolingo's proven methods into math education, offering lessons in elementary and everyday math for both students and adults.




Connect with expert tutors online for diverse subjects, including languages, math, and music. Flexible payment options and global tutor availability.




Duolingo ABC is an educational app from the creators of Duolingo, offering over 700 interactive lessons and stories designed to teach reading fundamentals to children from preschool to second grade.




Discover Mathigon, a groundbreaking new education platform that adapts to every individual student. Mathematics has never been so colourful.
H5P empowers everyone to create, share and reuse interactive content - all you need is a web browser and a web site that supports H5P.


Typing Club is a free web-application aimed at teaching the basics of touch typing and further improving your keyboard skills. Multiple layouts available. Progress can be saved online via Facebook, or by signing up for a free account, so you can continue learning wherever you go.




Learn the basics of Python Programming online with Python Principles. Helpful community, example-based learning, and 250+ coding exercises.
The most complete, simple and intuitive audience responses system that helps you engage your audience during a live conference, a corporate meeting or inside a classroom.








Faabul helps you design engaging quizzes and interactive presentations. Thanks to that you can engage with your audience and gamify your presentation. Faabul allows you to show live results for each question, providing instant feedback to your audience and keeping them...




Interacts is a simple tool that makes remote collaboration engaging and productive in minutes. Run agile activities, retrospectives, brainstorming, and team building sessions fast. Get rich input in your meetings and workshops quickly and easily with sticky notes, polls, word...




PGExercises provides a series of questions and explanations built on a single, simple dataset. It's designed for use as a partner to a good book or Postgres' excellent documentation. Exercises range from simple select and where clauses, through joins and case statements...

Open-source desktop tool for creating and sharing interactive H5P content with quizzes, multimedia, games, and assessments. Supports dozens of activity types.

Gynzy is the all-in-one teaching software that combines standards-aligned lessons, bite-sized games & activities, and class management tools to unlock the potential of your Interactive Whiteboard.



Select Star SQL is an interactive book designed to teach the SQL language through on-the-fly code execution lessons similar to code notebooks like Jupyter.


Audio Lesson Generator is an android app that creates audio lessons for drilling a series of questions and answers in to your long-term memory. It uses a similar graduated recall interval formula as the long-proven Pimsleur language lessons.



Interactive classroom tools with live quizzes and poll activities. Run in real time and join via QR code using text, drawings, or stickers.




QCMCam is an application for evaluation and survey, on LAN, only with a computer and a camera (webcam or smartphone). Multiple-choice quiz where students take placards and direct them to give their answers, the camera scans the answers.



The best digital experience builder ever. RacontR is the only all-in-one, standalone solution that takes your original idea to an online, published production.


The Punya project is being developed by members of the Decentralized Information Group at MIT Computer Science and Artificial Intelligence Laboratory. This work was initially supported by a grant from Qatar Research Computing Institute.

Interactive guitar lessons, playful challenges, ear training, progress tracking, and a rich library of chords, scales, and arpeggios to level up your guitar skills.




Akkem is a versatile platform for educators, tutors, schools, universities, textbook publishers, and language schools to build modern, interactive learning materials—no coding or design skills required.



