Slack offers Free Trial, but Selldone does not.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Selldone is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for Slack Starts at $2.67/Month whereas for Selldone Starts at $9.99/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 Selldone includes SimpleShop, Jungle Scout, SkuIQ, Shopify Plus, BigCommerce, Square Ecommerce, Shopify, Oneshop, Shopnix, Shopify POS, Web.com and Shopiroller.