Yes, both Slack and Dooly offer a Free Trial.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Dooly is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Slack Starts at $2.67/Month whereas for Dooly Starts at $25/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 Dooly includes Salesforce, SalesCRM, Scratchpad, Sellf CRM, Snapforce CRM, SAP Sales Cloud, Showell, Salesforce Sales Cloud, Salescamp and Salesvue.