How to develop accessible web interfaces for deaf people?

There are several entity initiatives, such as World Wide Web Consortium (W3C), which develop usability and accessibility standards for the Web. In general, the available technologies comply with these standards, but do not attend particularities and challenges of each disability, such as hard of hearing. Despite the initiatives, there are still some obstacles on the part of developers, such as the lack of interest, motivation and necessary knowledge about how to properly develop accessible web application. This paper presents results of a systematic mapping to obtain how Web interfaces are being designed and implemented for deaf people. The results showed few studies about development of tools and technologies to help developers; lack of requirements and recommendations that complement those existing to improve Web accessibility for the hard of hearing; and little use of assistive technology resources that can directly contribute to improving Web accessibility for this audience.