Atlantis Playmakers
- A family owned and operated theater company based in Billerica, MA, with arts education and touring programs throughout New England, as well as a full summer season of productions.
- http://www.atlantisplaymakers.com/

Masquerade
- Provides customized live performances for events, including performers, lights, sound, and content. Information about the different services and customization available, details about the troupe, and contact information.
- http://masqueradetroupe.com/

The Millis Theatre Group
- Interactive site listing productions, scheduled showtimes, group background, with reviews and commentary of and about the Millis Theater Group.
- http://www.millistheatre.org/

Foothills Theatre Company
- Worcester's only professional theatre, offering productions for children and adult audiences. Schedule for season, ticket information, and theatre school class schedule.
- http://www.foothillstheatre.com

Barrington Stage Company
- Professional company offers education programs and a diverse variety of performances in Sheffield, Pittsfield, and Great Barrington. Season schedule, reviews, awards, photos and information on programs and volunteerism.
- http://www.barringtonstageco.org/

Huntington Theatre Company
- Boston's professional theatre company in residence at Boston University.
- http://www.huntingtontheatre.org/

New Century Theatre
- Find out what's playing at New Century Theatre, Northampton's professional theatre company since 1991.
- http://www.newcenturytheatre.org/

Playwrights' Platform
- A Boston-based cooperative developmental theatre for new plays.
- http://www.playwrightsplatform.org/

American Repertory Theatre
- Not-for-profit resident theatre, founded by Robert Brustein, which has been active since 1966 as a professional producing organization and a theatrical training conservatory.
- http://www.amrep.org

Shear Madness
- Boston's comedy whodunit that lets the audience solve the crime.
- http://www.shearmadness.com

The Massachusetts High School Drama Guild, Inc.
- Promoting and strengthening excellence, access, and education in the theatrical arts for secondary school students and teachers.
- http://www.mhsdg.com

Robin Lane Productions
- A not-for-profit professional theater company, produces one-woman/one-man shows that dramatize the lives of persons in art history; black history; women's history.
- http://robinlaneproductions.com

SoloTogether
- SoloTogether, New England's organization of solo performers. SoloTogether is where all those lonely solo performers can meet with other lonely performers to commiserate, network or share ideas.
- http://www.gis.net/~mtf/solo.htm