Yes, both Slack and Fellow offer a Free Trial.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Fellow is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Slack Starts at $2.67/Month whereas for Fellow Starts at $5/User/Month when Billed Yearly.
Some top alternatives to Slack includes Microsoft Teams, Glip, Google Chat, ChatWork, Dialog, Office Chat, imBee, Takle, SPACE Channel and Teamwork Chat.
Some top alternatives to Fellow includes MeetingKing, Amazemeet, Lucid Meetings, e-Meeting, Meetinch, Tidycal, Meetgeek, MeetingBest, Topicflow, MeetNotes and One One Meeting.
