Jmol is a Free, Open Source molecule viewer and editor. It is a collaboratively developed visualization and measurement tool for chemical scientists. Jmol is an active project, and there are new features being added to it on a daily basis. Users are encouraged to modify it to fit their needs and to contribute their changes to the project.
kdrill helps people learn Japanese 'Kanji' characters. Its includes a multiple-choice Kanji quiz program that helps people learn Japanese characters with different guess formats and history options. It also has a suite of dictionary lookup functions. Words can be found using a variety of methods including Romaji, SKIP, four-corner, cut-n-paste, radical lookup, and English search.
Studycard Studio Lite is a program to create and memorize multimedia flashcards, tests, and tutorials, including picture and sound identification. It is meant for educators, students, or anyone who has something to memorize. Students can create and study their own flashcards and track their progress. Educators can create quizzes or flashcards for their students.
Interact is an online learning and collaboration platform that was developed by the Christchurch College of Education. It is a free alternative to the likes of WebCT and Blackboard, and was designed with the intention of making it easy for students and lecturers to interact online, and focuses on constructivist and Vygotskian views of teaching and learning.
X-Plane is a flight simulator that reads in the geometric shape of any aircraft and then figures out how that aircraft will fly. It does this via an engineering process called "blade element theory", which involves breaking the aircraft down into many small elements and then finding the forces on each little element many times per second. These forces are then converted into accelerations, which are then integrated to velocities and positions. This gives X-Plane the most realistic flight model available for personal computers.