If you're looking for a different Speak4Me alternative, Audioread is another option. This AI-powered service converts text documents into audio so you can listen to articles, emails and other written materials while doing other things. It works on multiple devices and offers very realistic voices, making it a good option for productivity and learning. The service also generates a private podcast RSS feed so you can subscribe and listen with your preferred podcast apps.
Another good option is Peech. Peech converts text into natural-sound audio in more than 50 languages and accepts a variety of input sources, including web pages and PDFs. It can be useful for people with dyslexia, vision problems or other reading difficulties. With adjustable settings and a range of subscription tiers, Peech is geared to help you understand, retain and access information better while producing high-quality audio.
If you're looking for something more focused, you might want to try Audemic Scholar. This system converts academic papers into an interactive, accessible format that's better for Ph.D. students and researchers trying to understand complex research. It's got features like highlighting, note taking and translation into other languages, too, as well as adjustable playback speed and accessibility options. That could be a good way to get a better handle on academic research.