CKEditor 4 offers Free Trial, but Slick does not.
CKEditor 4 is designed for Large Enterprises, Medium Business and Small Business.
Slick is designed for Medium Business, Small Business and Individuals.
Pricing for CKEditor 4 Starts at $37/Month when Billed Yearly whereas for Slick Starts at $6.58per month when Billed Yearly.
Some top alternatives to CKEditor 4 includes Sassbook, Concrete5, Contentful, CKEditor 5, blogstatic, Qualified, Workvivo, React & Share, TinyMCE, CustomFit.ai, Slick and Froala Editor.
Some top alternatives to Slick includes SimplyDocs, Documint, DocSavy, Bobson, Speedy Newsletter, INSPAKT DOC PLATFORM, Sizle, Qualified, Workvivo, Storydoc, Quill.app and DeftPDF.