Kimai — #1 Alternative to Toggl Track / Harvest

Name: Kimai
Rating: 4.9 (830 reviews)

Mature open-source multi-user time tracker with client rates, budgets, and PDF invoicing

Kimai supports unlimited users, customers, projects, tiered hourly rates, overtime rules, team approval workflows, SAML SSO, and customizable DOCX/PDF invoice generation.

License: AGPL-3.0 · Pricing: Open Core · Compare all Toggl Track / Harvest alternatives · Official Website