Troilus and Criseyde - In plain text, or as a zip file, at Project Gutenberg. - http://www.gutenberg.org/etext/257
Troilus And Criseyde - Rendered into modern English spelling; this site also includes the text of Robert Henryson's "The Testament of Cresseid" and the translator's prefatory comments. All are in Portable Document Format. - http://academic.brooklyn.cuny.edu/webcore/murphy/troilus/