Motion Firefox - All-in-one time management tool in Firefox

Mavenlink - Resource planning, time tracking, project financials, collaborative project management, and performance analytics all wrapped up in one intuitive solution.

Task Muncher - Task Muncher is a cross-platform and web-based application that is designed to organize and keep the track of everything and focus on munching the weekly tasks.

BigTime.net - BigTime is a leading Professional Services Automation software that helps you scale your firm by giving you the ability to track & act on your operational metrics. Even with remote work, easily manage time, expenses, & billing for multiple projects.

Taskable - Using multiple work apps leads to tons of context switching, breaking flow and killing productivity.

Kimble PSA - Kimble PSA provides professional service organizations with real-time diagnostics of their customer engagements.