Lavagna - OpenSource project management tool designed for small teams.
Scrum for Trello - Adds functionality to Trello boards for your Scrum projects.
Ora - Welcome to your team’s command center. A place to track projects. Tasks. Time. Commits. Status Reports. Your entire product or business! It's the fastest-growing productivity suite your team needs right now!
TargetProcess - Agile Project Management Web Application
Sublime Text - Sublime Text is a sophisticated text editor for code, html and prose - any kind of text file. You'll love the slick user interface and extraordinary features. Fully customizable with macros, and syntax highlighting for most major languages.
UpDiagram - Free agile project management tool for scrum team