solidtime

solidtime is a modern open-source time tracking application built for freelancers, agencies, and teams. It combines time entry tracking with project organization, client management, and billing workflows in a single web app.

Key Features

• Time tracking with a fast, modern interface
• Projects, tasks, and client management
• Billable rates per project, member, organization, and more
• Roles and permissions for team collaboration
• Multiple organizations per user account
• Import from other trackers (including Toggl and Clockify)
• Billing, reporting, and PDF invoice generation
• Progressive Web App (PWA) experience for mobile devices

Use Cases

• Freelancers tracking billable hours per client and generating invoices
• Agencies managing projects, team access, and rates across multiple clients
• Teams centralizing time entry reporting for internal or client-facing summaries

Limitations and Considerations

• Some announced features may be marked as “coming soon” depending on the version (for example offline support and certain client templating features)

solidtime is a good fit for organizations that want a modern UX and strong core time-tracking features while keeping control via an open-source, deployable product. It is especially well-suited when projects, client billing, and permissions need to live in the same system.