Yes, both Phabricator and Jira offer a Free Trial.
Phabricator is designed for Medium Business and Small Business.
Jira is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Phabricator Starts at $20/User/Month whereas for Jira Starts at $6.25/User/Month when Billed Yearly.
Some top alternatives to Phabricator includes ReclaimAI, ZoomInfo InboxAI, Jira, Assembla, Jira Service Desk, GitHub, GitLab, Qualified, AnalyticsVerse, Workvivo, CodeSee, SaaS Forge, GetGit and Bitbucket.
Some top alternatives to Jira includes Trello, Confluence, Asana, SwiftKanban, Kanbanize, ClickUp, Height, Kanban Tool, Kanban Zone and KanbanFlow.