The ” Világhalló” is an open source online reading software, which makes any text audible on the Internet in spoken language. The blind and visually impaired people can use electronic books and other texts without visual information using our “Világhalló” system. They have the possibility not only to listen to the texts, but they can turn pages or place bookmarks. The ” Világhalló” is an integrated on-line service. It forwards the available texts as a combined text and voice flow to the user (as a text radio) using special – developed for this purpose – voice-text synchronised protocol (wow). This protocol allows the user to navigate.