Yes, both Google Chat and Backlog offer a Free Trial.
Google Chat is designed for Large Enterprises, Medium Business and Small Business.
Backlog is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Google Chat Starts at $6/User/Month whereas for Backlog Starts at $29.16/Month when Billed Yearly.
Some top alternatives to Google Chat includes Microsoft Teams, Slack, Glip, MeetSpace, Output Messenger, ChatWork, Trillian, Dialog, Office Chat and Teamwork Chat.
Some top alternatives to Backlog includes Quickbase , Smartsheet, ClickUp, Zoho Projects, Jira, Wrike, TeamGantt, FogBugz, Teamwork, ProjectManager.com, Trackboard, TaskBranch, Quick Base, TestRail, Height and Project Insight.