Below are 3 all-in-one reading accessibility tools.
Read & Write
Immersive Reader
Helperbird
Read and Write (for Google Chrome)
This is a wonderful extension that mirrors many of the CAASPP accessibility features in a similar layout to the assessment interface. This would feel familiar to a student with designated supports. This is a "freemium" feature, meaning it has some free features as well as a paid, premium service.
This is another amazing accessibility tool that supports reader variability. It's a Microsoft product, but it is also compatible with Google Chrome as an extension.
Helperbird is a great acessibility tool for reading and writing. Like Immersive Reader, it focuses on students with dyslexia but can support all struggling readers. It's a premium service with a fee.