Are there any wikis that are suitable for use by visually impaired or blind people, using screen magnification or reader software?
Since wikis are text-centric by nature, most wikis are already friendlier to magnifiers and screen readers than other web sites are. WikiCase trips up some speech synthesizers on pronunciation (see also WikiWordsConsideredHarmful), so it might be preferable to use a wiki that supports hyphens or underscores e.g. Wiki_Words, or FreeLink syntax. Many wikis also support skins, themes, or styles via Cascading Style Sheets (CSS), making it possible to design an ultra-simple theme that works well with accessibility tools.