The Global Initiative for Inclusive ICTs is an interesting organization. They were launched in 2006 by the United Nations. They have four goals: raising awareness, facilitating solution sharing & good practices, fostering harmonization and standardization, and supporting policy makers [Source].
One interesting resource is their list of bloggers on accessible ICTs. I’m not sure how current the blogs or material is kept, but this looks like it has a lot of potential.
An example of the type of work they support and share is Blake Reid’s white paper: Third Party Captioning and Copyright. [Thanks, Sean, for the reference!]