Grammarly is an AI-powered writing assistant that can offer you personalized advice and even generate text to help you write more efficiently and accurately. It's got features like contextual suggestions, plagiarism checks and style guide help. It's available in free and premium versions, can be integrated with many apps and websites, and has a strong commitment to user security and data privacy.
Another powerful alternative is QuillBot, which offers a range of tools including a grammar checker, plagiarism detector and AI-powered writing tools. It also has a translator and citation tool, so it's good for all sorts of writing tasks. QuillBot has a clean interface and a premium subscription that unlocks more-advanced features, so it's good for writers who are just starting out or more advanced.
If you need to write in multiple languages, LanguageTool is worth a look. It supports more than 30 languages and offers grammar checking, tone suggestions and paraphrasing. It's available as plugins for various browsers and standalone apps for Windows, macOS, Linux, Chrome OS and Android. It's good for professional and academic writers, with features like advanced grammar and punctuation checks and tools for team writers.
Last, ProWritingAid is a general-purpose writing assistant that offers AI-powered reports, real-time checks and detailed editing. It can be integrated with many writing tools and offers tools to improve writing style, structure and readability. It's available in several pricing tiers, including for students, professionals and businesspeople who want to improve their writing.