Yes, both Rocket.Chat and Slack offer a Free Trial.
Rocket.Chat is designed for Large Enterprises, Medium Business and Small Business.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Rocket.Chat Starts at $2/User/Month when Billed Yearly whereas for Slack Starts at $2.67/Month.
Some top alternatives to Rocket.Chat includes Slack, Glip, Google Chat, Zulip, IRCCloud, ChatWork, Dialog, CometChat, Teamwork Chat and Echo.
Some top alternatives to Slack includes Microsoft Teams, Glip, Google Chat, ChatWork, Dialog, Office Chat, imBee, Takle, SPACE Channel and Teamwork Chat.
