Question: I need a writing assistant that can detect similes, metaphors, and personification in my essays and offer suggestions for improvement.

One of the best is the Figurative Checker. This AI-powered tool is geared specifically to spot figurative language in your text and help you write better. It uses machine learning algorithms to spot patterns and offer immediate feedback, making it good for improving academic writing, creative writing and understanding literary devices.

Another good option is Paperpal, an AI-powered academic writing tool that checks grammar and plagiarism but also offers context-sensitive language suggestions and real-time grammar checking. It also has a paraphraser and contextual synonyms drawn from published literature, so it's a good all-purpose tool to improve your writing clarity and quality.

If you want a more general-purpose tool, check out Wordvice AI, which offers a variety of revision tools including an AI Proofreader and an AI Paraphraser. The tool is geared to help researchers, students and content writers improve their writing with tools like plagiarism detection and text summarization, so your writing will be clear, error-free and effective.