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I run Linux Mint MATE edition (
$1), and it's great. Very accessible, and allows me to run a software company at least. Comes pre-installed with the orca screen reader by default, Firefox, xed text editor, Liber Office and more are all perfectly accessible, etc.
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Two beefs I have with it are you can't really run Orca while botted via USB, making installation quite difficult and requires assistance somewhat. That, and there is no support for Qt based programs. If you open a Qt based program, screen reader simply doesn't work.