Here are six examples of impressive portfolios utilizing Three.js:

1. Mars 2020 Entry Descent Landing

This is a real-time 3d simulation of the Perseverance rover that landed at the Jezero crater on Mars on February 18th, 2021.

2. Kenta Toshikura

Kenta Toshikura is the lead web designer and front-end developer at Garden eight. His portfolio showcases various interactive 3D projects and visualizations.

3. Aidan Nelson

Aidan Nelson is a creative developer based in NYC. His portfolio is a blend of artistic expression and technical prowess. The portfolio design is clean and allows users to explore and interact with them seamlessly.

4. Renaud Rohlinger

Renaud Rohlinger is a french creative developer based in Japan. His portfolio is elegantly designed, providing an engaging showcase of his work.

5. Bruno Simon

Bruno Simon's portfolio showcases his creativity and technical skill. Using Three.js, he crafts captivating 3D scenes and animations that leave a lasting impression on users.

6. Tao Tajima

Tao Tajima is a director and filmmaker based in Japan. His portfolio showcases his mastery of three-js, WebGL, and story-telling, which invites exploration and leaves a lasting impression on users.

These websites serve as inspiration for developers looking to showcase their skills in Three.js. By combining creativity with technical expertise, these developers have created engaging experiences that leave a lasting impression on users.

Please let me know if I have missed any stunning portfolios or if you believe that you have your own developer portfolio that should be listed here.