“William Shakespeare's The Tragedy of Othello, the Moor of Venice, or simply Othello, is a tragedy written in approximately 1603. One of Shakespeare's most tightly woven works, it explores themes of racism, betrayal, love, revenge, and forgiveness, and has spawned multiple film, literary, and operatic adaptations” (WilliamShakespeare.net).
WilliamShakespeare.net provides a brief biographic background of Shakespeare’s life before and during his time as a playwright. The website also incorporates his works of poetry and plays supplemented with quotations and facts. This resource also provides a comprehensive synopsis of each of his plays to include Othello, as well as a full PDF version of the play.
The Massachusetts Institute of Technology's University newspaper, The Tech, hosts a website resource that contains all of Shakespeare’s published works titled, “The Complete Works of William Shakespeare.” This source includes the entire play in single page format as well as displayed in sections broken down by act and scene.
This source does not provide line numbers for reference but does provide a link to purchase the Arden Shakespeare book edition of Othello. This edition provides detailed notes for understanding the vernacular and references within the text. "This site has offered Shakespeare's plays and poetry to the Internet community since 1993" (Shakespeare.mit.edu).