TemaTres is an open source vocabulary server, web application to manage and exploit vocabularies, thesauri, taxonomies and formal representations of knowledge.




TemaTres is an open source vocabulary server, web application to manage and exploit vocabularies, thesauri, taxonomies and formal representations of knowledge.




zkanji is a free and open-source study tool and dictionary of the Japanese language. It has several useful features for beginners and advanced students alike. Dictionary, example sentences, kanji search and information with animated stroke order diagrams, vocabulary list...




OAPEN promotes and supports the transition to open access for academic books by providing open infrastructure services to stakeholders in scholarly communication. We work with publishers to build a quality-controlled collection of open access books and provide services for...

ScrewTurn Wiki allows you to create, manage and share wikis in 23 languages. A wiki is a collaboratively-edited, information-centered website: the most famous is Wikipedia.

The Encyclopedia of Mathematics wiki is an open access resource designed specifically for the mathematics community. The original articles are from the online Encyclopaedia of Mathematics, published by Kluwer Academic Publishers in 2002.

YAGO2s is a huge semantic knowledge base, derived from Wikipedia WordNet and GeoNames. Currently, YAGO2s has knowledge of more than 10 million entities (like persons, organizations, cities, etc.) and contains more than 120 million facts about these entities.





Provide a simple and clean environment for everyone to practice their typing skills online for free.




Calculator with percentages, powers and functions. History with comments that is synced across all your devices. Cursor for editing anywhere. Simple interface with dark and light themes.




Python simulation of logic gates, circuits, down to transistor level using std_logic levels. This served as a prototype for the faster and more fully featured jSimuGate, also on GitHub - innovation-plantation/simugate

AvisFV is a free FITS viewer for Windows 11, 10, 8, 7 (compatible also with most Linux and Mac if WINE is installed).

Your lecture notes, flashcards, summaries, learning with friends, statistics, and even rewards for learning - all in one place and just a click away - StudySmarter.



Readitfor.me is designed to empower individuals, entrepreneurs, small teams and large organizations to discover and apply powerful ideas, strategies and best practices. We create animated videos, audio files and text summaries of the best selling books on leadership, marketing...



Folding@home is a distributed computing project -- people from throughout the world download and run software to band together to make one of the largest supercomputers in the world. Every computer takes the project closer to our goals.
A social network for learners to share reviews on learning resources like books, courses, apps, podcasts, newsletters, livestreams etc. Open-source and ActivityPub compliant.

Zeqr is a live knowledge sharing platform connecting knowledge seekers and expert tutors in real-time sessions for a unique learning experience, with video calling and screen-sharing built-in.


Onelook Thesaurus and Reverse Dictionary lets you describe a concept and get back a list of words and phrases related to that concept. Your description can be anything at all: a single word, a few words, or even a whole sentence.
MathsGee is a global, STEM-focused Q&A platform where you can ask people from all over the world educational questions for improved outcomes.


Teache is a mobile app that connects users with instructors for in-person classes. These classes can be almost anything, from skydiving to firewalking to math. As long as there is an expert on the subject, there can be a class. I created Teache for two main reasons:



Avogadro is an advanced molecule editor and visualizer designed for cross-platform use in computational chemistry, molecular modeling, bioinformatics, materials science, and related areas.


Numbr is a currency calculator, a notepad that understands your calculation. You can use notes with numbers alongside each other. And all your numbers are instantly calculated as you type.


HawkWatch International's Identification Guide to Raptors" puts expert hawk identification content in the palm of your hand. In this guide to North America's 34 species of diurnal raptors, you'll find nearly 1000 annotated photos, and cutting edge identification...




The mobile version of an acclaimed field guide featuring illustrations, comparisons, and more information for identifying birds in the field.



