Product Disrupt might be a bit more popular than Open Source Collage. We know about 1 link to it since March 2021 and only 1 link to Open Source Collage. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
It's definitely not the "best" but I made https://opensourcecollage.com. Source: about 2 years ago
Product Disrupt - Curated List of Resources to Learn Product Design. Source: almost 3 years ago
Student Resources - StudentResources.de is a list of 500+ resources, templates & tools built by Asteroid (https://www.myasteroid.com) that help students on their journey to build a successful career worldwide.
Design Principles - An open source repository of design principles and methods
Student-Pro - Ultimate Student Planner
Checklist Design - The best UI and UX practices for production ready design.
Woz U - Steve Wozniak's new tech education platform
Colorbox.io - Create accessible color systems 🎨