Yes, both Slack and Niro offer a Free Trial.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Niro 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 Niro 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 Niro includes Quick Base, Softools, ConvertFlow, 2OS App Builder, DrapCode, Undaku, Codeless, Kianda, CitizenDeveloper and Built.io Flow.