We are a small publisher of English as a Second Language textbooks. We offer a free online grammar checker to help English language learners improve their writing skills. It works well, but it looks homemade. You can see it all three pages here: http://virtualwritingtutor.com/ ; http://virtualwritingtutor.com/error_correction_activity.php ; and http://virtualwritingtutor.com/correcteur_grammaire_anglais.php
What we are looking for is an easy-to-read, high-contrast, clean, lightweight design with good SEO, Social media buttons, terms and conditions and our icon link to our other products. If your design is good, we will ask you to bid on our other websites to create common look.