Dribbble - Playbook - An instant portfolio, powered by Dribbble, at your domain
Codegiant - Codegiant - Issue tracking, git repositories, continuous integration and documentation in a single platform.
Google Drive - Access and sync your files anywhere
GoRetro - a free retrospective tool for your Agile sprints
Being Agile in Business - Simple introduction to agile project management for anyone
Scrumpy - A simple, beautiful and agile project management software