Question: I need a tool that can check grammar and spelling in multiple languages for my website's content management system.

If you need a powerful grammar and spell checker for multiple languages in your website's content management system, WProofreader is a good option. The AI-powered suite of tools handles more than 20 languages and includes features like multilingual sentence correction, AI paraphrasing and configuration options. It can be integrated with web applications, HTML controls and WYSIWYG editors, so it should be adaptable to whatever you're using.

Another good option is LanguageTool, which supports more than 30 languages and language variations. The tool checks grammar, offers tone suggestions and lets you paraphrase. It comes with plugins for many writing tools and websites, and standalone versions for Windows, macOS, Linux, Chrome and Firefox. LanguageTool is good for individuals and teams, with several subscription levels depending on your needs.

If you want a more powerful editor, check out CKEditor, a JavaScript-based text editor that supports multiple languages and has some advanced abilities like real-time collaborative editing, AI-assisted writing and customizable proofreading. CKEditor is highly customizable and can be integrated with popular frameworks, so it should be adaptable to whatever content management needs you have.

You might also be interested in Reverso, a full-featured online translation service that includes AI-based grammar and spell checking. It supports 15 languages and has features like document translation, integrated dictionaries and pronunciation help. Reverso is designed to improve writing style and clarity across languages, so it's a good tool to help you improve your content.