Freshservice - Freshservice: the one-stop cloud solution for all your IT management needs.
Scrumpy - A simple, beautiful and agile project management software
Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community
Planning Poker for GitHub - Story point estimation in GitHub with ZenHub
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.