Yes, both Slack and Katalon Studio offer a Free Trial.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Katalon Studio is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of Slack begins at $2.67/Month, while pricing details for Katalon Studio are unavailable.
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 Katalon Studio includes Postman, Endtest, TestRobotic, Cypress.io, Testim, QARA Enterprise, Tricentis Tosca, TestProject, ZAPTEST and Automaton.