There’s a bunch of free software out there for managing your projects that you’re working on by yourself or with a team. Whether it’s a freelance design gig for a website or recording your next album, these apps will help you stay organized and minimize confusion and extra work. There’s paid subscriptions but the free versions are pretty robust and powerful. I highly recommend just choosing one, that way you won’t get too confused and remember a bunch of passwords and whatnot. Enjoy!
Asana
Asana’s selling point is to streamline workflow without using e-mail. I used it a bit on a YouTube stop-motion film series last year and the free version is as good as any.
Producteev
Producteev is a pretty popular task management software and used by a lot of major companies. It’s the go-to task software for the Marketing 
Department at my day job, and as far as I know they experience no problems. The free version should do the trick for smaller teams.
Teamwork
I’m currently using Teamwork for a freelance web design project I’m writing copy for, and so far it’s pretty simple and intuitive to use.
Droptask
Droptask is getting a lot of buzz and is geared for the more visually oriented types. The lazy Susan-esque circular layouts remind me a bit like a Prezi presentation.
Trello
I like using Trello for personal projects. It’s fairly simple to use and operates more along the lines of a sophisticated to-do list.
