Keeps all the work organized in one place and helps to improve your communication and productivity
I think you can only find better alternatives if you're a developer and need more task granularity stages or estimation features, like Jira
I'm a big fan not only of BaseCamp, but also their founders' books (Rework, Remote, Getting Real) and blog posts. Their work philosophy is amazing and it's reflected on the clean and concrete software.
I really enjoy managing all aspects of my company with BaseCamp