Trello

Trello board is basically a web page containing lists laid out horizontally on the page so you can get a bird's eye view of your Project. Individual cards themselves can contain checklists, images, attachments, deadline dates, colored labels, and discussion notes from others who share the board. You can have as many boards as you want.

JIRA

JIRA is a proprietary issue tracking product, developed by Atlassian. It provides bug tracking, issue tracking, and project management functions.