The Paraphrasing Tool is a full-featured tool that uses AI to rewrite text from a variety of sources, including images and screenshots. It's available as a browser extension for Chrome, Firefox, Edge, Opera and Safari and as a mobile app for Android and iOS. It's got lots of modes for clarity, correctness, creativity and more, plus speech-to-text input, an AI-powered thesaurus and a built-in research panel.
Another good option is QuillBot, which offers a range of writing tools, including paraphrasing, grammar checking, plagiarism detection and more. It's available as browser extensions and mobile apps, so you can use it on whatever platform you prefer. The premium subscription offers unlimited paraphrasing, advanced grammar suggestions and custom summaries, so it's a good option for writers who need a little help.
LanguageTool is another good option, a multilingual paraphrasing and grammar-checking tool that's available as browser extensions and standalone apps for macOS, Windows and iOS. It supports more than 30 languages and dialects, so it's a good option for professional and academic writers.