Description: GeoGebra is free and open-source dynamic mathematics software for all levels of education. It combines geometry, algebra, spreadsheets, graphing, statistics and calculus in one easy-to-use package. It can be used to teach math from elementary through university level.
Type: software
Pricing: Open Source
Description: Pidgin is an open source chat application used for instant messaging that supports multiple protocols and accounts including AIM, MSN, Yahoo, XMPP/Jabber, and more. It allows users to stay connected across different services on one interface.
Type: software
Pricing: Open Source