Yes, both Sifter and Backlog offer a Free Trial.
Sifter is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Backlog is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of Backlog begins at $29.16/Month when Billed Yearly, while pricing details for Sifter are unavailable.
Some top alternatives to Sifter includes FogBugz, Backlog, The Bug Squasher, Zoho BugTracker, MantisBT, ReportBugz, Bug-Track.com, Disbug, TaskSift and Crash Catch.
Some top alternatives to Backlog includes Smartsheet, Miro, Process Street, Wrike, Notion, Jira, TeamGantt, FogBugz, Teamwork, ProjectManager.com, Trackboard, TaskBranch, Quick Base, ClickUp, TestRail, Height and Project Insight.