Asana

Asana's real strength is that it offers list, board, timeline, and portfolio views of the same work, so different people on a team can look at it the way that makes sense to them. That flexibility has a price, literally — timeline views sit behind the Premium tier, so the free plan shows you what you're missing more than it lets you use it. Makes sense for mid-size teams with a budget already earmarked; less so for anyone hoping to stay free forever.