Chrono Plus - Chrono Plus is a convenient task manager and time tracking tool with a host of handy features
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
Timings 3 - Timings - Track worktime on your Mac. Compatible with GrandTotal invoicing software.
Basecamp - A simple and elegant project management system.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Cage - A simple way for designers and teams to share, manage and approve their creative work.