If you are looking for more functionalities for free, Jira should be your go-to solution. The free plan of Jira includes a user limit of up to 10 users, scrum and kanban boards, backlog, agile reporting, customizable roadmaps, 2 GB media storage, etc.

While on the other hand, Zenkit's free plan includes a user limit of up to 3 users and 1 GB media storage, etc. Gantt chart feature isn't available in the free version.