Yes, both Clubhouse and Slack offer a Free Trial.
Clubhouse is designed for Large Enterprises, Medium Business and Small Business.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of Slack begins at $2.67/Month, while pricing details for Clubhouse are unavailable.
Some top alternatives to Clubhouse includes Quickbase , Smartsheet, ClickUp, Zoho Projects, Basecamp, Trello, Wrike, TeamGantt, ProofHub, monday.com, Asana, ProjectManager.com, Quick Base, Citrix Podio and Adobe Workfront.
Some top alternatives to Slack includes Microsoft Teams, Glip, Google Chat, ChatWork, Dialog, Office Chat, imBee, Takle, SPACE Channel and Teamwork Chat.