Collaboration Software (free and paid services):
Slack: https://slack.com/
“With all of your communication and tools in one place, remote teams will stay productive no matter where you’re working from.”
Asana: https://asana.com/?noredirect
“Asana is the work management platform teams use to stay focused on the goals, projects, and daily tasks that grow business.”
Podio: https://podio.com/site
“Try the customizable work management solution leaders trust and employees love working on.”
Trello: https://trello.com/home
“Trello’s boards, lists, and cards enable you to organize and prioritize your projects in a fun, flexible, and rewarding way.”
Flock: https://flock.com/
“Flock makes communication and collaboration effortless. Get all the features you need in one easy-to-use tool. Bring your team together, get access to everyone in your organization with customizable channels and a team directory, easily find and share information, stay on track with apps, [and] integrate your favorite tools.”
Groups.io: https://groups.io/
“A modern platform for online communities. Powerful management tools. Mobile ready. Free and paid plans. No ads, no tracking.”
Discord: https://discordapp.com/
“Discord is the easiest way to communicate over voice, video, and text, whether you’re part of a school club, a nightly gaming group, a worldwide art community, or just a handful of friends that want to hang out.”