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 
Gnod
Gnod is a project that aims to use the latest technological advances to help users discover new things they might like, with over 300,000 monthly users.
Free Rank: #14 Visits: 126.1K