Basecamp bundles the essentials of running projects — to-do lists, message boards, schedules, docs and group chat — into one calm, opinionated tool. There are no sprints, story points or Gantt charts by design; every project gets the same simple set of tools, which keeps client work and internal work legible.
The flat monthly price is the standout: unlimited users means it gets cheaper per head as you grow, which is why agencies and growing small teams like it. Teams that want dependencies, estimates or agile ceremonies should look at Asana or ClickUp instead.