TimeTracker vs solidtime
Both TimeTracker and solidtime are free, self-hostable, open-source time trackers — this isn't a free-vs-paid fight. Here's an honest look at how they differ so you can pick the right one.
Last updated: September 17, 2026
solidtime is a newer project with a polished, SaaS-like UI, automatic activity tracking, and idle detection, plus importers from Toggl, Clockify, and CSV. TimeTracker is a GPL-3.0 project focused on invoicing, Kanban, and budgets in the core app. Neither one charges a license fee to self-host.
solidtime
Laravel-based, self-hosted or managed cloud. Modern UI, automatic activity/idle detection, multi-organization support.
- Free to self-host, AGPL-3.0 licensed
- Automatic app/document activity tracking + idle detection
- One-click import from Toggl, Clockify, and CSV
TimeTracker
Self-hosted, GPL-3.0, Docker-first. Timers, Kanban, budgets, and PDF invoicing with status tracking in one codebase.
- Free to self-host, GPL-3.0 licensed
- Kanban boards and project budgets built in
- Invoice generation from tracked time, PDF export, multi-currency
| Capability | TimeTracker | solidtime |
|---|---|---|
| License | GPL-3.0 | AGPL-3.0 |
| Self-hosted (Docker) | ||
| Built-in invoicing (PDF) | In the free core app | Cloud: paid tier only. Self-hosted: separate extension |
| Kanban boards | Not found in public docs | |
| Automatic activity/idle tracking | Idle detection only | |
| Guided import from other trackers | Generic CSV import (time entries, projects, clients, tasks) — no branded Toggl/Clockify importer | Toggl, Clockify & CSV |
| Multi-organization / multi-tenant | Not found in public docs | |
| Project budgets & forecasting | Rate + budget per project | |
| Peppol / EN 16931 e-invoicing | Built in, free, GA | EN 16931 structured e-invoices confirmed (paid feature); explicit Peppol network transport not confirmed |
| Try it | Try TimeTracker's live demo | |
Sources: TimeTracker's own FEATURES_COMPLETE.md and Peppol docs; solidtime's invoicing page and on-premise pricing page (verified 2026-09-17). Rows marked "not found in public docs" mean no evidence either way, not a confirmed absence — worth a hands-on check before making a purchase or migration decision.
Choose TimeTracker if…
- You want invoicing and Kanban boards in the free base install — solidtime's invoicing is a paid cloud feature or a separate self-hosted extension.
- You need Peppol/EN 16931 e-invoicing for a mandate like Belgium's 2026 rules.
- You prefer GPL-3.0's terms over AGPL-3.0 for your organization's policies.
- You don't need automatic app-activity tracking, just reliable timers and idle detection.
Choose solidtime if…
- You want automatic activity and idle detection out of the box.
- You're migrating from Toggl or Clockify and want a guided import.
- You manage multiple organizations from a single account.
See which one fits your team
Spin up the TimeTracker demo, or deploy your own instance in 5 minutes with Docker — no signup either way.
100% free · GPL-3.0 · no credit card · no signup