LanguageTool
LanguageTool is a writing assistant that detects overused phrases, foreign terms, redundant words, and improper word choice, and can also paraphrase sentences using artificial intelligence.
Freemium 
Rank: #1 
Visits: 9.9M 
Freemium Rank: #1 Visits: 9.9M 
Scite_
Scite.ai is an award-winning platform for discovering and evaluating scientific articles via Smart Citations, trusted by leading universities, publishers, and corporations across the world, with over 650,000 users.
Freemium Rank: #3 Visits: 1.3M