If you're looking for another PaperRater alternative, Paperpal is a good option. It has AI-powered academic writing tools to help with language, grammar and clarity. It has features like real-time grammar checking, plagiarism detection and a paraphraser, so it's good for all stages of writing. It also can handle high-quality academic translations, and it has a free version with limitations, so it should be useful for a lot of situations.
Another good option is Wordvice AI. This writing assistant has a broad range of tools, including an AI proofreader, paraphraser, translator and summarizer. It's geared for people like researchers, students and content writers who want to improve their academic papers or other writing projects. Wordvice AI has a free basic plan and more expensive subscription plans, so you can pick what's right for you.
If you need a general-purpose language checker, try LanguageTool. It supports more than 30 languages and language varieties, and it's got grammar checking, tone suggestions and paraphrasing. It's available as plugins for writing tools, browser extensions and standalone apps, so it works for individuals and teams. Premium features include advanced grammar checks and team management tools, so it's good for professional and academic writers.