IBM
Yes, both Hassl and Notion offer a Free Trial.
Hassl is designed for Large Enterprises, Small Business, Medium Business and Individuals.
Notion is designed for Individuals, Freelancers, Medium Business and Small Business.
Pricing for Hassl Starts at $4.80per user / month when Billed Yearly whereas for Notion Starts at $4/Month when Billed Yearly.
Some top alternatives to Hassl includes Smartsheet, Miro, Process Street, Wrike and Notion.
Some top alternatives to Notion includes Jira, Knote, Trello, Confluence, Asana, Easynote, ClickUp, TWiki, MeisterNote and Zenkit Hypernotes.