Yes, both Element and Mattermost offer a Free Trial.
Element is designed for Large Enterprises, Medium Business and Small Business.
Mattermost is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Element Starts at $10/Month whereas for Mattermost Starts at $3.25/User/Month.
Some top alternatives to Element includes Glip, Mattermost, Wire, Output Messenger, Trillian, Dialog, Gitter, SafeChats, CypherChat and Messenger Communication Platform.
Some top alternatives to Mattermost includes mi.team, Rocket.Chat, Glip, Zulip, Output Messenger, Trillian, Dialog, SafeChats, Takle and Teamwork Chat.
