Fresh Memory is an application that helps you to learn large amounts of any material with Spaced Repetition method. The most important subject is learning foreign words, but Fresh Memory can also e used to learn anything else. Other examples are country's capitals and flags, chemical elements, mathematical formulas, and technical terms. The learning data is stored as flash cards and dictionaries: sets of cards. The flash cards may have several fields, and the user controls what combination of fields to learn. The flash cards can have formatted text and images. The look of flash cards and studying parameters are can be flexibly adjusted.
Asymptopia Crossword Builder (Math/Text) is an application that runs in any modern Web browser, but does not require an Internet connection (if it is installed locally). The application was designed to allow teachers to quickly produce well-designed, challenging activities. The application features a configuration panel where the user can either enter their own word-hint pairs, or generate math-crossword problems via a single button. The math functionality generates word:hint pairs like: "four:7/x-3/8=11/8", where the hint corresponds to the problem, and the student would write the letters "four" in the corresponding boxes of the puzzle.
Suri Pluma is a satellite image processing tool and visualizer. It can open the most common image formats without importing to an internal format and minimizing the memory required for visualization. It is designed to be modular and extensible. It has a meassurement tool (distance and areas with error estimation) and geographical and map coordinate information.
Torah Tools is a collection of utilities designed to assist Torah learning. Currently, Torah Tools consists of two programs: Daf test and Gemarah charts. Daf test helps you memorize on what page each Gemarah is to be found. It gives you a test to take after you learn a Perek or Masechta that requires you to choose the correct location for a displayed Amud of Gemarah. Gemarah charts helps you keep track of how many times you've Chazered over material by providing a chart with a list of all of the Perakim in the Mesechta, a list of the Dafim in each Perek, and just enough room in each box to mark off your Chazaros.
The Item Response Theory (IRT) library is a set of functions to estimate the items and abilities from the responses of subjects to a questionnaire. The IRT models supported are the logistic model, the nominal response model, the graded response model, and smoothing by penalization and kernel. The project also hosts rirt, a package for the R Project for Statistical Computing, and eirt, an add-in for Excel.
Quizdrill is a learning-by-testing program to quickly learn tasks that mostly involve memorizing, like vocabulary. Quizdrill supports multiple choice, simple quiz, and flashcard testing. Although still quite primitive, Quizdrill asks questions which have been answered right more often than others to improve learning efficiency. Quizzes can be easily created by editing simple text files or can be automatically built from Infobox-style templates of Wikipedia dumps (or other MediaWikis and even Semantic MediaWikis).