Slack offers Free Trial, but PerformYard does not.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
PerformYard is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Slack Starts at $2.67/Month whereas for PerformYard Starts at $4/User/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 PerformYard includes Lattice, Synergita, Performance Pro, Kallidus Perform, BullseyeEngagement, PerformanceHub, 10xPerformance, Teamflect, Performly, Employee Success Platform, Leapsome and ReviewSnap.