There are a number of free ways to keep track of projects that might work for you. Trello, Asana, and Monday.com are all popular choices. Each of these services has different features and levels of flexibility, so you may want to do some research to find the one that best fits your needs. You can also use tools made just for Fiverr, like JustFiverr, FiverrTrack, and FiverrAnalytics, which offer different ways to keep track of Fiverr projects.