Yes, both Slack and Dinvy offer a Free Trial.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Dinvy is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Slack Starts at $2.67/Month whereas for Dinvy Starts at $4/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 Dinvy includes Teamdeck, timr, InVision, Resource Guru, Schedule it, Resource Management by Smartsheet, Ravetree, Heyweek, Resourceinn, TeamQ and Canvasrs.
