Neither Rivers nor Trillian offers a free trial.
Rivers is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Trillian is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Trillian begins at $3.33/Month when Billed Yearly, while pricing details for Rivers are unavailable.
Some top alternatives to Rivers includes Microsoft Teams, mi.team, Slack, Glip, Trillian, Dialog, imBee, Softros LAN Messenger, Brosix and Teamwork Chat.
Some top alternatives to Trillian includes Google Chat, HCL Sametime, Output Messenger, Dialog, Office Chat, mais.im, imBee, Softros LAN Messenger, Takle and Brosix.