Yes, both Crisp and REVE Chat offer a Free Trial.
Crisp is designed for Individuals, Freelancers, Medium Business and Small Business.
REVE Chat is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Crisp Starts at $25/User/Month whereas for REVE Chat Starts at $13.50/Month when Billed Yearly.
Some top alternatives to Crisp includes ZoomInfo Chat, LiveChat, LiveEngage, Pure Chat, DeskMoz, MyLiveChat, Intercom, Smartchat, ChatFlow247, Freshchat and Let's Connect.
Some top alternatives to REVE Chat includes ZoomInfo Chat, LiveAgent, LiveChat, Crisp, LiveEngage, MyLiveChat, Zendesk Chat, Smartchat, raychat, ChatFlow247 and 13chats.