Yes, both Slack and Vivantio offer a Free Trial.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Vivantio is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Slack Starts at $2.67/Month whereas for Vivantio Starts at $42/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 Vivantio includes Freshservice, ManageEngine ServiceDesk Plus, SolarWinds Service Desk, Jira Service Desk, Symantec ServiceDesk, InvGate Service Desk, IBM Control Desk, Teamwork Desk, HelpDesk, TOPdesk, Sitehelpdesk and Scopedesk.
