svninfo is used to extract the revision and file information provided by the Subversion revision control system. To present the version information of a document, one needs to extract it from some kind of text inserted by the revision control system. Subversion offers therefore the Id keyword, which is expanded by the Subversion update command and contains a lot of useful information. This information is made available through this package.
The algorithms package is aimed at being both simple and powerful for typesetting pseudo-code/algorithms in LaTeX documents. Since it uses the (La)TeX engine to generate its output, the results obtained are frequently of high-quality. The package comes with a manual and is quite easy to use in day-to-day documents.
SiSU (Structured information, Serialized Units) is a lightweight markup based, text structuring and publishing framework (that features granular search). With minimal markup of a plaintext file, it produces: plain-text, HTML, XHTML, XML, ODF, LaTeX, PDF, and populates an SQL database at an object/paragraph level for granular searches. Prepare documents using your text editor of choice, then use SiSU to generate the desired output formats. SiSU is controlled from the command line.
VRR is a vector image editor designed especially (but not only) for making illustrations of mathematical articles. Its main features are many types of geometric objects and keeping of their dependencies, cooperation with TeX, scripting in Scheme, real-size dimensions, support for a wide range of file formats (including PS, EPS, PDF, and SVG).
scbib is a bibliography manager written in Scheme. It handles bibliographic data written in simple S-expressions and generates a bibtex file and an HTML file from the S-expressions file. It is capable of obtaining bibliographic data using the Amazon Web service. A simple converter for importing a bibtex file is also included.
Aquamacs is a Mac-like version of the powerful Emacs text editor that runs as a standard OS X application. It features extensive customization that enables it to conform better with Apple's standard Human Interface Guidelines (HIG) than standard versions of the editor do. It provides a more Mac-like user experience than Carbon Emacs.
GDC is a utility to calculate compressible flow (Gas Dynamics Calculator). It provides calculations for isentropic nozzle, isothermal nozzle, isothermal, Fanno (choke and unchoked), Rayleigh flow, etc. It also provide calculations for shock and oblique shock by direct calculations (no iteration, probably the only one that can do it). GDC also calculates shock dynamics, i.e gas running into a different medium with different speed. The result are in plain text, LaTeX, or a range of values.