Hi there! Great question. Here are some recommendations from our design team:

• Wix is free: https://www.wix.com/
• Webflow is free: https://webflow.com/
• Cargo Collective is not free, but requires a small fee: https://cargo.site/
• Squarespace is not free, but requires a small fee: https://www.squarespace.com/
• One other free option is to create a portfolio in PDF format! Many of our designers have created a PDF with a title page and links to various case studies/projects to make it easier to browse. We asked our hiring managers, and they confirmed that this would work well from their point of view when reviewing—as long as folks are clear about that portfolio approach when submitting materials.

Good luck!