Yes, both Guru and Confluence offer a Free Trial.
Guru is designed for Large Enterprises, Medium Business and Small Business.
Confluence is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Guru Starts at $14/User/Month when Billed Yearly whereas for Confluence Starts at $8.33/User/Month when Billed Yearly.
Some top alternatives to Guru includes GitBook, Zoho Wiki, KBPublisher, Drupal Wiki, LearnLode Enterprise, TWiki, Wiki Valley, GoGoWorx, HuForce and ProProfs Knowledge Base.
Some top alternatives to Confluence includes Jira, Microsoft SharePoint, Google Workspace, GitBook, Zoho Wiki, Drupal Wiki, TWiki, Wiki Valley, XWiki and Team Wiki.