Yes, both Hudu and GitBook offer a Free Trial.
Hudu is designed for Medium Business and Small Business.
GitBook is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Hudu Starts at $31/Month whereas for GitBook Starts at $6.40/User/Month when Billed Yearly.
Some top alternatives to Hudu includes Confluence, Planisware Enterprise, GitBook, Drupal Wiki, LearnLode Enterprise, TWiki, Engynn Intranet, PortalsXpress, N-able Passportal and IT Glue.
Some top alternatives to GitBook includes Confluence, simplewiki, Zoho Wiki, Drupal Wiki, TWiki, Wiki Valley, MeisterNote, Team Wiki, Obsidian and Dokit.
