Yes, both Slack and Basaas Tasks offer a Free Trial.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Basaas Tasks is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Slack Starts at $2.67/Month whereas for Basaas Tasks Starts at $6.50/user/month when monthly.
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 Basaas Tasks includes Connecteam, Smartsheet, Miro, Todoist, Notion and Process Street.