CGI:IRC is a Perl/CGI program that lets you access IRC from a web browser, it is designed to be flexible and has many uses such as an IRC gateway for an IRC network, a chat-room for a website or to access IRC when stuck behind a restrictive firewall.
makes screenshots of web design in different browsers. It is a free open-source online service created by Johann C. Rocholl. You submit a web address, it is added to the job queue. Distributed computers will open the site and make screenshots available
GeoGebra is dynamic mathematics software for all levels of education that joins arithmetic, geometry, algebra and calculus. On the one hand, GeoGebra is an interactive geometry system. You can do constructions with points, vectors, segments, lines, conic sections as well as functions and change them dynamically afterwards. On the other hand, equations and coordinates can be entered directly. Thus, GeoGebra has the ability to deal with variables for numbers, vectors and points, finds derivatives and integrals of functions and offers commands like Root or Extremum. These two views are characteristic of GeoGebra: an expression in the algebra view corresponds to an object in the graphics view and vice versa.
Essays about design -- in German (Google translate to English is clunky, but gets the basic idea across). The essays about design in free fonts -- along the right side of the page -- are of particular interest.
In Spanish, except for the user agreement: "The fonts on this site are freeware and can be used as they are in any context without permission from Apostrophic Laboratories, except to produce material that is racist, criminal and/or illegal in nature. It is prohibited to modify any Apostrophic Laboratories font(s) for repackaging and/or re-release without an express written authorization by the designer(s) of the font(s) or Apostrophic Laboratories. Under no circumstance shall any Apostrophic Laboratories design or font design be sold or purchased. Email info@apostrophiclab.com if you want more information." Curiously, many of the fonts here are named after psychiatric medications -- including several well known anti-depressants.