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: Groups.io is an email group and mailing list management service that provides advanced features like calendars, databases, polls, and file storage. It aims to replace Yahoo and Google groups with improved functionality.
Type: software