Cyberbrau is a Web-based program to help the homebrewer. It allows for very simple and intuitive beer, cider, and mead recipe creation, and it automatically calculates all the pertinent information based on the selected ingredients and schedule. In addition to the recipes, it allows multiple brewers to privately track their own batches, emailing them on racking, bottling, and lagering dates. Finally, it has a 'taster's review' section which allows those who try your brew to rate and comment on the batch. This information goes into the overall recipe ranking.
The Chemistry Development Kit (CDK) is a library of Java classes for chemo-, bioinformatics, computational chemistry, and chemometrics. It provides important algorithms like substructure search, SMILES, Gasteiger charges, QSAR descriptor calculation, 3D structure generation, 2D layout and rendering, many IO formats, atom typing, and more.
JOELib/JOELib2 is a cheminformatics library which supports SMARTS substructure search, descriptor calculation, processing/filtering pipes, and conversion of different chemical file formats. It is written in 100% pure Java, and interfaces to external programs (e.g. Ghemical) are available.
Asymptopia Flashcard System uses Motif and LaTeX to produce, manage, and use attractively formatted flashcards. You load some or all of your "collections" and set the timer for pop-up frequency. The GUI interface and "Collection Manager" make creating and modifying flashcards as simple as pushing a single button. A knowledge of LaTeX is only required when entering special symbols.