Read&Write for Google Chrome
Read&Write includes a bunch of tools to help kids with reading and writing. Its TTS offers several voices, plus dual-color highlighting. (This highlights both a sentence and individual words as they’re read aloud.) Its OCR can read text from screenshots and images.
This Chrome extension has a text and picture dictionary to help with reading comprehension. It also lets kids highlight in different colors as they read. Then they can compile highlighted notes in a document. Read&Write has a tool to simplify the text on a page, too. It collects just the important sentences to give a summary.
Price: $100/year (free to try; free for teachers)