Linguix offers Free Trial, but Lightkey does not.
Lightkey is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Linguix is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Lightkey Starts at $39.95/User/Month whereas for Linguix Starts at $6/month when yearly.
Some top alternatives to Lightkey includes ProWritingAid, Linguix, Grammarly Business, WritingAssistant, Writer, TextWizard, Ginger and Copylime.
Some top alternatives to Linguix includes Gramara, WritingAssistant, Writer, Essaybot, QuillBot, Ginger and Jenni.