I guess there are many suggestions and tool offering here, they are very helpful to software ARCH, I can offer one alternative option here, which is mind map to

I guess there are many suggestions and tool offering here, they are very helpful to software ARCH, I can offer one alternative option here, which is mind map tools, it can help you make your thought of ARCH become very clear, in some sense, it will save you a lot of effort afterward: xmind and mindmanager. https://www.xmind.net/ https://www.xmind.net/ https://www.mindjet.com/mindmanager/ https://www.mindjet.com/mindmanager/