i-sense r2 Community Edition is a fully-featured, web-based groupware application including email, task management, group calendar, file management and much more. i-sense r2.ce is free of charge for non-commercial use, such as student projects, open-source projects etc. i-sense is based on the concept of achieving the highest efficiency gains through a systematic utilisation of synergy effects between various functions. Thereby, all aspects of a company are combined in one single tool. The basic principles of i-sense are: modularity, platform-independence, simplicity, multi-language support, flexibility and extensibility.