Jira may be extremely sluggish and require a large amount of memory on the client side.
Carrd - Simple, responsive one-page site creator.
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.
Responsivize - A must-have tool to develop responsive websites
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
Cargo - Cargo Collective is a web publishing platform that creates and offers accessible tools online.
Wrike - Wrike is a flexible, scalable, and easy-to-use collaborative work management software that helps high-performance teams organize and accomplish their work. Try it now.