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TimeTagger vs solidtime: catalog facts
TimeTagger	solidtime
Freemium Self-hosting is free; the hosted service is paid after a 14-day free trial.	Free Free and open source to self-host; a hosted cloud version is also offered.
Web, Self-hosted	Web, Self-hosted, Browser extension
Interactive timeline for quick insight into spent time PDF and CSV reports suitable for client billing	Clean, modern interface Flexible billable rates
Hosted service requires a paid subscription after the trial Pomodoro feature is experimental	No invoicing described in its feature list Self-hosting requires following separate guides
Web application, Self-hosted, Hosted service	Downloadable app, Self-hosted, Hosted service, Browser extension
Open source	Open source
License: GPL-3.0	License: AGPL-3.0
Not stated if an account is needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.