Yes, both Slack and Salesforce Sales Cloud offer a Free Trial.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Salesforce Sales Cloud is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for Slack Starts at $2.67/Month whereas for Salesforce Sales Cloud Starts at $25/user/month when 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 Salesforce Sales Cloud includes Thryv, monday sales CRM by monday.com, Pipedrive, Zoho CRM, Vendasta, ClickUp, Freshsales, Salesforce, Salesboom, GoCRM, SalesCRM, SimpleCRM, CloudCC CRM, Snapforce CRM and CRM.io by 500apps.