Slack offers Free Trial, but Promocate does not.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Promocate is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Slack Starts at $2.67/Month whereas for Promocate Starts at $10/Month.
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 Promocate includes AffTrack, Post Affiliate Pro, TrackingDesk, Refersion, Affiliatise, TUNE, OffersHub, Affilo, Affiliatics and Sir Filiate.