This paper describes the design, development and validation activities of a Brazilian educational software to support literacy for youth and adults with intellectual disabilities. The software supports audio and video to facilitate interaction with teachers and students. It includes the most popular methods of literacy; also it can be integrated with traditional educational tools. The results of the validation process with students affected by some types of syndromes have shown that this software is a useful and effective teaching tool. Nowadays, this software is used in all the Brazilian states.