Solidtime is an open-source time tracker built for freelancers and agencies that bill by the hour. It combines a timer, calendar, and weekly timesheet with projects, clients, tasks, and billable rates, and it can run as Solidtime Cloud or self-hosted with Docker under the AGPL-3.0 license.[1][2]
Quick verdict
Solidtime fits freelancers and small agencies that want a clean, self-hosted Toggl replacement for billable client work. Its timer, calendar, and timesheet views, project and client organization, Toggl and Clockify import, Docker self-hosting, and documented REST API cover the core tracking workflow, with cloud billing from free to 8-9 euros per user monthly. The material constraints are paywalled billing features, no documented SSO or offline mode, and no inspected community track record. If your team bills hours and can live without centralized identity, start with the free Solo tier or a Docker instance; if you need SSO, verified scale references, or Kimai-grade depth, look elsewhere first.[1][2][3][4]
What Solidtime covers
Time entry works through a running timer, a calendar view, and a weekly timesheet, with breaks tracked as part of the working day.[1]
Work is organized into clients, projects, and tasks with project members, and one account can manage multiple organizations with roles and permissions.[1][2]
Billable rates can be set per organization, organization member, project, and project member, and tracked hours feed into reporting and invoices on the Professional cloud plan.[1][2]
Reporting filters hours by member, project, task, client, tag, and billable status, with rounding, PDF export, and shareable reports on the Professional plan.[1]
Existing history can be imported from Toggl, Clockify, or a Timeentry CSV file, which gives teams a concrete migration path off proprietary trackers.[1]
Self-hosting is documented with Docker and Docker Compose guides, configuration reference, a super-admin panel, and CLI commands, alongside the hosted Solidtime Cloud option.[1][2]
A RESTful API covers the functionality of the web application, authenticates with user-created Bearer tokens, and publishes rate limits of 200 authenticated requests per minute per user.[1]
Desktop apps for macOS, Windows, and Linux record which app and document is in focus, detect idle time, and keep that activity data on the local machine until it becomes a time entry.[1]
Who it fits
Freelancers who bill clients by the hour fit well: the free Solo plan covers tracking, projects, calendar, timesheet, and reporting for one user.[1][2]
Small agencies that track project time across a team fit the Professional plan, which adds team support, access management, billable rates, invoicing, and estimates.[1][2]
Teams that want a self-hosted Toggl replacement without per-seat fees fit well, since the codebase is AGPL-3.0 and the documented Docker setup is rated easy.[1][2]
An independent April 2026 comparison of open-source Toggl alternatives positions Solidtime as the best modern option for buyers who want a clean interface without the complexity of Kimai, while noting invoicing was still planned at that time.[1]
Where it falls short
Billable hours, invoicing, estimates, rounding, PDF reports, and shareable reports are Professional-only on the cloud, so the free tier tracks time but does not bill it.[1]
No SSO, SAML, LDAP, or OAuth-login documentation was found, so organizations that require centralized identity have no documented path.[1]
No offline mode, sync behavior, or data-residency statement is documented; the desktop app buffers activity locally but entries live in the account, and hosting regions are unstated.[1][2]
Switching and integration
Teams leaving Toggl, Clockify, or Timeentry can import history directly, including via CSV, which lowers the switching cost for an agency with years of entries.[1]
The REST API mirrors the web application and the desktop apps cover macOS, Windows, and Linux, so tracking fits web-first teams with mixed desktop platforms.[1][2]
Questions worth asking
How much does Solidtime cost per month?
Solidtime Cloud charges nothing for the Solo plan with 1 user, and 8 euros per user per month on annual billing or 9 euros monthly for Professional, excluding VAT. Self-hosting the open-source codebase carries no seat fee; you pay only for your own infrastructure.[1]
Can I self-host Solidtime instead of using the cloud?
How does Solidtime compare with Kimai?
Both are AGPL-licensed, self-hosted, multi-user time trackers with projects, clients, and APIs. Kimai is the older, broader suite with invoicing and approval workflows; Solidtime is the newer, simpler interface with billable rates and invoicing on its paid cloud plan. Pick Kimai for depth and plugins, Solidtime for a cleaner start.[1][2][3]
Does Solidtime support SSO or offline use?
Sources and editorial review
Source research. Reviewed on October 13, 2026. Written by Sanjib Sah. AI assisted; reviewed by a human editor.
We have not run or tested this product.
- Solidtime homepage
official · Observed October 13, 2026
Official homepage: open-source time tracking for teams and freelancers; timer, calendar, timesheet, reporting, invoicing, project management; desktop apps; vendor-stated 15,000-plus users, 1,000-plus self-hosted servers, 8,600-plus stars; AGPL-3.0; bootstrapped.
- Solidtime cloud pricing
official · Observed October 13, 2026
Cloud pricing: free Solo plan for 1 user; Professional at 8 euros per user per month annually or 9 monthly, excluding VAT; feature matrix showing billing, advanced reporting, and team controls as Professional-only.
- Solidtime desktop app
official · Observed October 13, 2026
Desktop app page: automatic activity tracking, idle detection, local-only activity data; downloads for macOS, Windows, and Linux; releases in the solidtime-desktop repository.
- solidtime README
official · Observed October 13, 2026
Repository README: modern open-source time tracker for freelancers and agencies; projects, tasks, clients, billable rates, multiple organizations, roles; import from Toggl, Clockify, CSV; self-hosting guides; AGPL-3.0 license.
- solidtime self-hosting docs
official · Observed October 13, 2026
Self-hosting docs: Docker and Docker Compose deployment guide, configuration, super-admin panel, CLI commands, on-premise business option; hosted version at app.solidtime.io; support plans via direct contact.
- solidtime API access docs
official · Observed October 13, 2026
API access guide: RESTful API covering all web-app functionality; user-created Bearer tokens; rate limits of 200 requests per minute per authenticated user and 60 per IP for guests.
- Best Open-Source Toggl Alternatives 2026
published measurement · Observed October 13, 2026 · Published April 12, 2026
Independent April 2026 comparison of open-source Toggl alternatives: Solidtime rated the best modern option with easy Docker self-hosting, multi-user support, and API; compared head-to-head with Kimai, Traggo, and Timetagger.
Compared with these products
No explicit proprietary baseline is recorded.