[nohuhu]

> The better ones are often tied to company-specific frameworks.

That is because to implement accessibility in a grid/tree widget to a meaningful level, you need a lot of underlying code. Even in modern browsers. Source: implemented accessibility in Ext JS framework.

One of the most often asked questions from users of Ext JS was: hey, can we have the Grid widget without all the bloat? Sure, and ~95% of the framework exists so that the Grid can have its features and work reliably across all the browsers. You can probably do without the rest 5%, no biggie.