Free drawing software for Windows, Mac OS X, and Linux
Dia Diagram Editor is free Open Source drawing software for Windows, Mac OS X and Linux. Dia supports more than 30 different diagram types like flowcharts, network diagrams, database models. More than a thousand readymade objects help to draw professional diagrams. Dia can read and write a number of different raster and vector image formats. Software developers and database specialists can use Dia as a CASE tool to generate code skeletons from their drawings. Dia can be scripted and extended using Python.
DRINKS is a set of smart web-based widgets.
ToDoBee is a simple yet powerful task management application for Mac OS X. It is a user friendly and intuitive application that can be used for any IT related project as well as any general day to day task tracking/management situation.
Issue tracking and team collaboration system
WebIssues is an open source, multi-platform system for issue tracking and team collaboration. It can be used to store, share and track issues with various attributes, description, comments and file attachments. The system is easy to install and use but has many capabilities and is highly customizable. Website: https://webissues.mimec.org/ The current development version of WebIssues can be found at https://github.com/mimecorg/webissues