What is the best coldfusion MVC framework that have good documentation? I found some one that doesn't have good documentation.

Coldbox (https://www.coldbox.org/) is the go-to.

Coldbox by far; check out #box-products for tons of support too 🙂

ColdBox can handle whatever you need from simple to extremely complicated sites, and everything in between. It is also very well documented. :)

Really the only feasible maintained frameworks right now are ColdBox, FW1, and Taffy.

Don't forget ColdBox has video training if that's your speed: https://cfcasts.com/series/cb-zero-to-hero

Coldbox is a great framework but you may also want to check out CFWheels. It's a framework modeled after Ruby on Rails.

On a side note, besides the documentation on the website, Cfwheels has it's documentation built into the framework and automatically adds functions you create to that documentation. You don't have to do anything but comment your functions.