Kitsu is described as 'production tracking solution designed for small to mid-size animated studios. It enables you to dispatch tasks, send feedback, perform reviews, follows quotas and validate the work done'. There are four alternatives to Kitsu, not only websites but also apps for a variety of platforms, including Mac, SaaS, Windows and Self-Hosted solutions. The best alternative is ftrack. It's not free, so if you're looking for a free alternative, you could try TACTIC. Other great sites and apps similar to Kitsu are Shotgun (Paid) and Vani Production Tracking Software (Paid).
At Vani there mission is to accelerate the efficiency of each resource which will increase the studio profit.. Due to shorter timelines, tighter budgets and growing creative demands, studios need to be efficient.