TimeSlips

Timeslips is a time tracking and billing software that helps businesses track time and expenses, create invoices, and manage their billing process. The pricing for Timeslips is not available on their website, but according to borekconsulting.com, Timeslips has new pricing and subscription tiers.
Some of the competitors of Timeslips include FreshBooks, QuickBooks Online, TimeSolv Legal Billing, Clio, Chaos Legal Billing Software, Rocket Matter, Bill4Time Billing, PracticePanther, AccountEdge Pro and Smokeball.