Yes, both Ludwig and Writer offer a Free Trial.
Ludwig is designed for Individuals, Medium Business and Small Business.
Writer is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Ludwig Starts at $3.99/Month when Billed Yearly whereas for Writer Starts at $8.25/Month when Billed Yearly.
Some top alternatives to Ludwig includes Gramara, ProWritingAid, Linguix, Grammarly Business, WritingAssistant, Writer, WordAi, Essaybot, Ginger and RytersBlock.
Some top alternatives to Writer includes ProWritingAid, Linguix, WritingAssistant, WordAi, Ginger, Handywriter, Jenni and BloggerAI.