Question: I'm looking for a grammar and spell checker that also offers paraphrasing and citation generation tools.

If you're looking for an AI-powered writing assistance platform with a variety of tools, QuillBot is a good option. It offers a grammar checker, paraphraser, plagiarism detector, citation builder and more. The interface is intuitive, so it's good for writers of all skill levels. The Premium subscription adds features like unlimited paraphrasing and advanced grammar suggestions.

Another good option is Writetone, which offers paraphrasing, grammar checking, text-to-voice conversion and citation generation. It comes with tools like HumanGPT to make AI-sounding writing more natural and Subject Expert for quick answers. Writetone offers a tiered pricing system with a free plan and a Plus plan at $4.99/month, and it can be used through a Chrome extension and MS Word integration.

If you need something that works in multiple languages, check out LanguageTool. It supports more than 30 languages and dialects, and it offers grammar checking, tone suggestions and paraphrasing. LanguageTool is available as browser extensions, email extensions, office plugins and standalone apps for macOS, Windows and iOS. Premium subscribers get more advanced grammar and punctuation checks.

Last, Wordvice AI offers a broad suite of writing tools, including a text editor, AI reviser, paraphrasing tools and citation generator. It's geared for different types of users, including researchers, students and content writers, and offers different subscription plans. The company also offers expert proofreading services and MS Word extensions.