Neither Intercom nor Unstack offers a free trial.
Intercom is designed for Large Enterprises, Medium Business and Small Business.
Unstack is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for Intercom Starts at $59/Month whereas for Unstack Starts at $22/Month when Billed Yearly.
Some top alternatives to Intercom includes ZoomInfo Chat, ClickDesk, LiveAgent, LiveChat, Crisp, LiveEngage, Zendesk Chat, Smartchat, ChatFlow247, Freshchat and Let's Connect.
Some top alternatives to Unstack includes Unbounce, VWO Deploy, Wix, Elementor, Boundless, Webs, Format, HelloWeb, FlyerFunnel, Way, FastPages.io, NinjaSites by 500apps, Axistart DIGITAL, Customsitenow and Web.com.