very good tools and configuration for everyone

Its easy and configure and implement, and it has all of the features that the average person with accessibility needs requires. It has a pleasant interface that yet remains very accessible. I, however, like it most because it has a free tier where you could try it out, and if it covers your needs, leave it as is until you need to upgrade. I chatted with their lovely support agent, who also described why their product is suitable for governmental websites (which was the project I needed).

Simple! You don't need to do anything other than paste a simple script into your site. He is able to modify the site without having to touch the code!