Slack offers Free Trial, but Attio does not.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Attio is designed for Large Enterprises, Small Business, Medium Business and Individuals.
Pricing for Slack Starts at $2.67/Month whereas for Attio Starts at $29.00per 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 Attio includes Thryv, Salesforce Sales Cloud, monday sales CRM by monday.com, Pipedrive, Zoho CRM and Vendasta.