Yes, both Troop Messenger and Nuclino offer a Free Trial.
Troop Messenger is designed for Large Enterprises, Medium Business and Small Business.
Nuclino is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Troop Messenger Starts at $5 whereas for Nuclino Starts at $5/User/Month when Billed Yearly.
Some top alternatives to Troop Messenger includes Zoho Cliq, Airtable, ClickUp, Fleep, Troopr, Glip, ChatWork, Dialog, Aritic Swarm, Teams.cc by 500apps and Teamwork Chat.
Some top alternatives to Nuclino includes Trello, Confluence, CollaborateCloud, Airtable, ClickUp, Microsoft SharePoint, Collabee, Slab, Notion, Slite and Witeboard.