Slack offers Free Trial, but JustCall does not.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
JustCall is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Slack Starts at $2.67/Month whereas for JustCall Starts at $20/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 JustCall includes CloudTalk, Call Center Studio, Aircall, Dialpad Contact Center, VCC Live, RingCentral Contact Center, Squaretalk, CloudCall, OpenPhone and MyOperator.
