Yes, both Confluence and Notion offer a Free Trial.
Confluence is designed for Large Enterprises, Medium Business and Small Business.
Notion is designed for Individuals, Freelancers, Medium Business and Small Business.
Pricing for Confluence Starts at $8.33/User/Month when Billed Yearly whereas for Notion Starts at $4/Month when Billed Yearly.
Some top alternatives to Confluence includes Jira, Microsoft SharePoint, Google Workspace, GitBook, Zoho Wiki, Drupal Wiki, TWiki, Wiki Valley, XWiki and Team Wiki.
Some top alternatives to Notion includes Jira, Knote, Trello, Confluence, Asana, Easynote, ClickUp, TWiki, MeisterNote and Zenkit Hypernotes.