Yes, both Slite and Berkeley Publisher offer a Free Trial.
Slite is designed for Freelancers, Medium Business and Small Business.
Berkeley Publisher is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Slite begins at $6.67/User/Month when Billed Yearly, while pricing details for Berkeley Publisher are unavailable.
Some top alternatives to Slite includes Confluence, Notion, GitBook, Zoho Wiki, Drupal Wiki, LearnLode Enterprise, TWiki, Teamemo, Wiki Valley and Team Wiki.
Some top alternatives to Berkeley Publisher includes WeWeb, simplewiki, GitBook, Drupal Wiki, TWiki, Wiki Valley, Microsoft Azure, HintEd, Kbee and ProProfs Knowledge Base.