Farfalla is a web application for enhancing accessibility of any website. It is meant to be easy to configure and to use. It wants to provide users with a lightweight and flexible solution, which can be always available in the cloud, for free.
You can try it right now via the Farfalla website: you only have to click on the bar on the upper-right part of the page to select a profile. Every profile allows accessing different kinds of resources, from text magnification to an onscreen keyboard.
They will add more tools in the future, so if you can’t find anything useful, you could try contacting them and explaining your needs.
Farfalla is based on free technologies such as jQuery, jQuery-UI, PHP and MySQL. Farfalla is Free Software. Its source code is distributed under the GNU Affero General Public License (GNU AGPL). The main developer is Andrea Mangiatordi.