GanttProject is a cross-platform desktop tool for project scheduling and management. It runs on Windows, Linux and MacOSX, it is free and its code is opensource. What can it do? * Gantt chart.

ScudCloud is a non official open-source Ubuntu desktop client for Slack.

ucaresystem app is an automation script that automatically and without asking for your intervention performs some crucial Ubuntu maintenance processes, which otherwise would be done one by one and pressing Y / N each time.

Route events from and to popular destinations like github, bitbucket, IFTTT, Zapier, and IoT devices (Arduino, particle, etc).