[1] Draw.io is a very good tool to document architecture. Keep it simple. [2] code2flow is also great to show high level logic. README's in the repository are

[1] Draw.io is a very good tool to document architecture. Keep it simple. [2] code2flow is also great to show high level logic. README's in the repository are great to track changes in architecture with the code. Easily understood architecture allows for easily understood code, which allows people to help you! [1] https://draw.io https://draw.io [2] https://code2flow.com https://code2flow.com