Accessibility Extensions for Mozilla/Firefox - Toolbar to help users navigate pages, and also tools for developers to check their pages. Installation instructions and documentation. MozBraille - Self-voicing and Braille output based on the Mozilla browser. Fire Vox - An open source suite of extensions that turn Firefox into a talking browser for the visually impaired. Accessibar - Provides various accessibility features such as changing the appearance of web pages, including zoom and color changes, and an integrated text to speech reader. CLiCk, Speak - An open source extension designed for sighted users who want text-to-speech functionality. Page Zoom Buttons - Ads page zooming buttons to the toolbar for easy access to the full page zoom feature. WebVisum - Aimed at the visually impaired offers captcha solving and link and page tagging for screen readers. Captcha Monster - Firefox add-on which automatically completes CAPTCHA tests.