Yes, both Microsoft Word and Slack offer a Free Trial.
Microsoft Word is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Microsoft Word Starts at $5/User/Month when Billed Yearly whereas for Slack Starts at $2.67/Month.
Some top alternatives to Microsoft Word includes Documint, Google Docs, pdfFiller, Documate, LiveDocs, LibreOffice, Microsoft PowerPoint, Storydoc, SoftMaker Office, WPS Office and WordPerfect Office.
Some top alternatives to Slack includes Microsoft Teams, Glip, Google Chat, ChatWork, Dialog, Office Chat, imBee, Takle, SPACE Channel and Teamwork Chat.