Yes, both Guru and GitBook offer a Free Trial.
Guru is designed for and undefined.
GitBook is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Guru Starts at $14/User/Month when Billed Yearly whereas for GitBook Starts at $6.40/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 GitBook includes Confluence, simplewiki, Zoho Wiki, Drupal Wiki, TWiki, Wiki Valley, MeisterNote, Team Wiki, Obsidian and Dokit.
