Solidtime is a time-tracking application (open-source) developed in Austria (the imprint shows an address in Vienna). It provides web and mobile timers, project and client management, reporting, and invoicing features. The site emphasizes a modern, user-friendly interface and fair, usage-based pricing. Solidtime can be used for free on a basic level, with paid plans for larger teams. All versions support unlimited projects and entries, and the tool can be self-hosted or used in the cloud.