Jira - The #1 software development tool used by agile teams. Jira Software is built for every member of your software team to plan, track, and release great software.

Note.ly - Note.ly is an easy-to-use platform that allows you to save thoughts and ideas in notes and share them with anyone.

Trac - Trac is a project management and bug/issue tracking system. Provides an interface to Subversion and an integrated wiki.

Hott Notes - Hott Notes is a free reminder for Windows operating systems.

Redmine - Flexible project management web application

pinup - Pinup.com is quick and easy to take sticky notes and share with your friends. It's Simple to use.