Slack offers Free Trial, but Shelf does not.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Shelf is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Slack begins at $2.67/Month, while pricing details for Shelf 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 Shelf includes ComAround Knowledge, SmartSupport, KMS Lighthouse, Talisma KnowledgeBase, Verizon Knowledge Assist, IntelligenceBank KM, KnowledgeOwl, HuForce and ContactEngine.
