Dynalist
Dynalist is a outlining and organizing web app. It can be used for notes, Todo lists/GTD, brainstorming, etc. It has a good looking (seriously so), easy to use interface, and includes OpenDyslexic as an option.
Get it at https://dynalist.io/
Storyboard That
Storyboard That is a great web app that lets you make storyboards for your workplace, in schools, or just to make a comic.
From the developer:
Storyboard That is the world’s best online storyboard creator. From creating short stories, or doing a plot summary storyboarding is a powerful way to visually see and communicate ideas.
iSword
[caption id="attachment_328" align="aligncenter" width="1280"] iSword in Chrome, with different fonts shown[/caption]
The Last Door
[caption id="attachment_322" align="aligncenter" width="1024"] In-Game Screenshot with OpenDyslexic[/caption]
MediaWiki
MediaWiki is another one of the first to add OpenDyslexic to their software. MediaWiki is the awesome open source wiki software that runs Wikipedia, WikiMedia, and so much more.
Get it: http://mediawiki.org
My Agility Board
[caption id="attachment_180" align="aligncenter" width="1108"] OpenDyslexic is a font option in this online sticky-notes web application that helps you keep track of your work.[/caption]
BeeLine Reader
[caption id="attachment_153" align="aligncenter" width="986"] Beeline Reader using the 'subtle' option, and OpenDyslexic[/caption]
LiveInk WebClipRead
[youtube http://www.youtube.com/watch?v=LVhpfmY8ZXM]
WebClipRead is an excellent web app that I've been using for reading long passages of text. It formats the text in a way similar to what I used to do by hand in college: in small phrases with colors.
Get it: http://liveink.com/WCR