Yes, both Slack and Avocode offer a Free Trial.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Avocode is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Slack Starts at $2.67/Month whereas for Avocode Starts at $15/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 Avocode includes Flock, eXo Platform, Spike, Zoho Cliq, Airtable, ClickUp, Nextcloud, JANDI, Lark, Microsoft Teams and Google Workspace.