Product Disrupt might be a bit more popular than Google Design Sprint Kit. We know about 1 link to it since March 2021 and only 1 link to Google Design Sprint Kit. 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.
Also Google (as in the company not the verb) has a free version of their discovery techniques here https://designsprintkit.withgoogle.com/. Source: about 1 year ago
Product Disrupt - Curated List of Resources to Learn Product Design. Source: almost 3 years ago
Design Sprint Kits - A pre-assembled kit for GV design sprints.
Design Principles - An open source repository of design principles and methods
Colorbox.io - Create accessible color systems 🎨
Sprint - How to solve big problems and test new ideas in 5 days
Checklist Design - The best UI and UX practices for production ready design.
Land Book - The homeland for fine websites