Service Design Tools Methods Library
Three things I like about this methods library
Tons of sorting options: you can sort the methods in many different ways: by moment of the design process, by the people you want to work with, and so on.
Enhanced tools: the team has also improved some old classics, like personas with elements from the world of complexity, system thinking or strategic foresight.
It's a community library: you'll find case studies, examples of how each method is used, and you can even contribute to the library with your own examples and case studies.