RabbitWork

RabbitWork is project time tracking for service businesses: consultancies, law firms, agencies, architecture and engineering offices, and IT teams. Your team logs hours by manual entry, timer, the Chrome extension, or automatic entries for allocated people, with no screenshots and no activity monitoring. Each project gets a selling rate and each person an hourly cost, so you see the budget used, what to bill and the margin left in real time. Features: weekly timesheets with approvals and reminders, capacity per person, Kanban tasks, branded PDF reports, Excel/CSV export and a REST API with webhooks.

The Chrome extension (https://chromewebstore.google.com/detail/jdibjjefdjcfbnfmphdhbjganaopckbe) adds a timer to Trello cards (https://rabbitwork.io/integrations/trello). It works through the extension, not a Trello Power-Up. Free plan for up to 2 users and 5 projects. Paid plans from US$8 per user/month, billed yearly, with a 14-day trial.