Yes, both Slack and MightyForms offer a Free Trial.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
MightyForms is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Slack Starts at $2.67/Month whereas for MightyForms Starts at $19/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 MightyForms includes Cognito Forms, Formsite, Typeform, Jotform, 123FormBuilder, FormCrafts, Framestr Online Forms, Forms, EmbedForms, Forms.io by 500apps, FormDesigner and FormLink.