osclass is Web-based software for creating classified ads. The ads can be general or specialized by category (such as cars, jobs, or real estate). It is easy to install on private/dedicated or shared hosting services. It has lots of options for customization. It is integrated with the TinyMCE WYSIWYG editor. It can be extended through modules (for vertical ads) or extensions (plugins). It supports multiple languages. The look and feel are can be changed with themes. It is SEO friendly. It has an integrated search engine with full text support. An unlimited number of categories and sub-categories can be defined. It has anti-spam facilities that are enabled out of the box (with CAPTCHAs and Askimet).
Ibid is a multi-protocol, general purpose, instant messaging chat bot written in Python. It aims for a naturalistic interface rather than strict-syntax commands. Ibid understands many protocols, including IRC, Jabber/XMPP/Google Talk, Campfire, NMDC, and SILC. It also interacts over SMTP, HTTP, and various RPC protocols. Ibid aims to make plugins as easy as possible to write. It ships with a large collection of plugins for looking up information, performing conversions, storing factoids, delivering messages, and much more.