Yes, both Framer X and Nuclino offer a Free Trial.
Framer X is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Nuclino is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Framer X Starts at $27/User/Month when Billed Yearly whereas for Nuclino Starts at $5/User/Month when Billed Yearly.
Some top alternatives to Framer X includes Looka, InVision, Justinmind, Figma, HotGloo, Axure RP, Mockplus, Inspireframe, Previewed and Marvel.
Some top alternatives to Nuclino includes ClickUp, Trello, Confluence, CollaborateCloud, Airtable, Microsoft SharePoint, Collabee, Slab, Notion, Slite and Witeboard.