Jira may be extremely sluggish and require a large amount of memory on the client side.
XML-Director - A XML content management system based on the CMS Plone for XML content, DOCX to XML conversion and high-quality PDF production, EPUB support. Enterprise CMS.
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.
TeraText DMS - TeraText DMS supports an authoritative document repository to manage documents from draft through QA to final published baseline.
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.
easyDITA - easyDITA is a component content management system (CCMS) that offers extensive content creation, management and publishing solutions.
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.