Speech and language disorders affect millions of adults and children and can greatly affect an individual’s quality of life. Speech and language technologies have a huge potential for addressing speech and language disorders, both for rehabilitation as well as for assistive technology. Software incorporating linguistic technologies can provide objective, consistent, and tireless feedback to language-impaired users. We discuss existing software, the principles of using speech and language software for language deficits, how different types of feedback apply to specific disorders, and what new applications might be possible.