MacPower Macintosh Users Group
- Group based in Emmaus serving Lehigh, Berks, Carbon & Northampton Counties in Pennsylvania.
- http://www.macpower.us/

Erie Apple Crunchers
- Offers a mailing list, online store, links, and sponsor information.
- http://www.usergroup.org/EAC/

Pennsylvania Apple Microcomputer Users' Group
- Based in University Park, PA MUG provides a newsletter, reviews, links, and membership information
- http://www.pamug.org/

North Pittsburgh Macintosh Users Group
- Online store, member products, newsletter, meeting information, news, mailing list, special interest group, and photos.
- http://www.npmug.com/

Keystone MacCentral
- Based in Harrisburg, Key Mac offers membership information and application, newsletter, and events calendar.
- http://www.keystonemac.com/

John Hopkins Medical Institute Mac Users Group
- Offers a listserv, links to member web pages, reviews, meeting notes, and e-mail.
- http://www.mug.jhmi.edu/

Drexel University Mac Users' Group
- DUsers offers web hosting, mailing lists, and information specific to PC and Mac users at Drexel University.
- http://www.dusers.drexel.edu/

Bux-Mont Macintosh Users Group
- Based in Philadelphia, and serving Bucks and Montgomery counties, Bux-Mont offers meeting schedule, tips, mailing list, and software downloads.
- http://www.buxmontmug.org/

Main Line Macintosh Users Group
- Pennsylvania MUG website featuring latest events, shareware, newsletter, and membership information.
- http://www.mlmug.org