Slack offers Free Trial, but Outreach does not.
Outreach 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 Outreach are unavailable.
Some top alternatives to Outreach includes Apollo.io, AroundDeal, CrankWheel, ZoomInfo Engage, Salesforce, Highspot, Groove, SalesLoft, Adapt Engage, Salesforce Sales Cloud, Salesvue, Sales Booster by Leadspicker, Closely and SalesHandy.
Some top alternatives to Slack includes Microsoft Teams, Glip, Google Chat, ChatWork, Dialog, Office Chat, imBee, Takle, SPACE Channel and Teamwork Chat.