Grammarly - Clear, effective, mistake-free writing everywhere you type.
Scribbr - Scribbr is an online proofreading and editing service used for the academic activities of the students.
Gramara - AI grammar correction with transformers
EditMyPaper.ca - Fast and accurate English editing for essays, general papers, research papers and manuscripts.
Perfect Tense - AI-powered grammar checker with an API
GradeProof - Proofreading with Artificial Intelligence