CaseFox - Web-based legal software for law firms and lawyers that has timekeeping, legal billing, expense tracking, time billing, trust accounting, case management, and many more features.
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
SimpleLegal - Modern e-Billing, legal spend, and matter management software for in-house and legal operations. Advanced reporting, automated accruals, invoice management, and more.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Legitigant Billing Management - Vanguard I.T. is a technology services company that specializes in helping businesses improve their functionality via technology.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.