Mortimer is a fast, no-fluff time tracker built for freelancers and agencies who care more about getting paid than tracking every second.
Cost / License
- Freemium
- Open Source (GPL-3.0)
Platforms
- Online
- Software as a Service (SaaS)

Cattr is described as 'Free open-source self-hosted time tracker with desktop clients for windows, mac, linux. The key features are built-in screenshot capture, activity detection' and is a Time Tracking tool in the office & productivity category. There are more than 100 alternatives to Cattr for a variety of platforms, including Web-based, Mac, Windows, iPhone and Android apps. The best Cattr alternative is Super Productivity, which is both free and Open Source. Other great apps like Cattr are Toggl Track, Karman, ManicTime and solidtime.
Mortimer is a fast, no-fluff time tracker built for freelancers and agencies who care more about getting paid than tracking every second.

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