Open Source Education Software

Tux Paint is a free, award-winning drawing program originally created for children ages 3 to 12, but enjoyed by all! It combines an easy-to-use interface, fun sound effects, and an encouraging cartoon mascot who guides children as they use the program. You're presented with a blank canvas and a variety of drawing tools to help them be creative. Along with paintbrush, shapes and text, Tux Paint includes a "stamp" feature to add pre-drawn or photographic imagery to pictures, and a set of "magic tools" that provide filter effects (like blur, tint and waves) and interesting drawing tools (like train tracks, bubbles and grass). Tux Paint includes a collection of "starter" images, both coloring-book style and photo-realistic, and a large collections of stamps are available as a separate download. Additional content can be added by parents & teachers, or downloaded from 3rd parties. Tux Paint is available for Windows, macOS, Android, Linux, & Haiku operating systems, among others.

Similar to the classic word game 'Scrabble', but with unicode support for multiple languages and character sets. The game is currently distributed with eighty-eight (88) dictionary resources for playing Language[i]-Language[j] 'Scrabble'. For example, if configured to use the French-English dictionary, then the distribution of available tiles will be computed based on frequency of occurance of each character of Language[i] (French), and for each submission the corresponding definition will be given in Language[j] (English).

GeoGebra is free and multi-platform dynamic mathematics software for learning and teaching geometry, algebra, statistics, and calculus. Download the free software at http://www.geogebra.org. Find the source code at http://www.geogebra.org/trac

The application Dictionary System (DS) is a web application designed for creation of one-way bilingual dictionaries or encyclopaedias offering a working environment for creation of a dictionary and a web page which enables the general public to search in the dictionary. It is so-called DWS application (Dictionary Writing System) or DPS (Dictionary Production / Publishing System). Aplikace Dictionary System (dále DS) je webová aplikace. Je to tzv. DWS aplikace (Dictionary Writing System) nebo také tvz. DPS (Dictionary Production/Publishing System). Aplikace Dictionary System nabízí pracovní prostředí pro tvorbu jednosměrných dvojjazyčných slovníků nebo encyklopedií a webové stránky, které umožňují vyhledávat ve slovníku široké veřejnosti.