If you want to use a tool to translate conversational writing into formal, professional writing, Professionalize It To Me is a good option. The GPT-4-powered tool can convert informal writing into polished, professional writing, and it works in multiple languages for emails, Slack messages and WhatsApp. It's got a basic website interface and several pricing tiers, including a free trial and a 30-day money-back guarantee.
Another powerful option is LanguageTool, which offers AI-powered language checking and rewriting in more than 30 languages. It's got features like grammar checking, tone suggestions and integration with writing tools and websites. Premium subscribers get more advanced grammar and punctuation checks, and team features like user management and a team dictionary, so it's good for professional and academic writers.
If you're looking for something more specialized for academic writing, Paperpal offers context-sensitive language suggestions and high-quality academic translations in more than 25 languages. It's got features like real-time grammar checking, plagiarism detection and a paraphraser that keeps a formal tone, so it's good for writers at any level.