Yes, both Slack and Gitalytics offer a Free Trial.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Gitalytics is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Slack Starts at $2.67/Month whereas for Gitalytics Starts at $349/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 Gitalytics includes Ideal Analytics, Statsbot, SAS Business Intelligence, Panintelligence, ibi Analytics Platform, GitHub, Easy Insight, AppInsights, Waydev and AnalyticsVerse.