Yes, both Slack and Sprout Social offer a Free Trial.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Sprout Social is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Slack Starts at $2.67/Month whereas for Sprout Social Starts at $89/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 Sprout Social includes Crowdfire, SocialBee, Buffer, Sprinklr, Zoho Social, Hootsuite, Planable, SocialMgr, Later, SocialBu, Ultimate SMM, Social Mako, CloudSocial, SocialHub and Lately.