Sieve - Easy sorting, filtering and pagination for .NET core

Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.

Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.

Clockify - Simple and free time tracker. Perfect for small and mid-sized businesses as well as freelancers. Unlimited projects and users, unlimited productivity. Get all the premium functionalities, completely free.

Harvestr - All in one product management platform.

Cattr - Cattr is a free open-source self-hosted time tracker with desktop clients for windows, mac, linux.