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Kimai
Kimai — open source alternative
Self-hosted time tracker with invoicing and reports.
Strengths
- Teams, projects, customers and invoices in one tool.
- REST API plus mobile clients.
- Easy PHP/MySQL deployment on any VPS.
Weaknesses
- UI is functional rather than polished.
- Some reports need the paid plugins or plugin-store extensions.
- Smaller ecosystem of integrations than Toggl.
Ad slot — OSS middle
Kimai is used as an alternative to
More open source in this category
Discover other projects tagged Time Tracking on the category page.
Recommended reading
When self-hosting goes wrong: seven failure modes and how to avoid them
An honest retrospective on the ways self-hosted setups break — not in theory, but in practice — and the small habits that prevent most of them.
Will the open source project you depend on still exist in three years?
Bus factor, maintainer burnout, funding models, and the signals that separate OSS projects that survive from those that quietly decay.
From SaaS to self-hosted: a 30-day migration playbook
A week-by-week plan to move one service off SaaS and onto your own server without breaking your team's workflow.