Oriana Singers
- A cappella chamber choir. Features concerts and program calendar, history, repertoire, links, and contacts.
- http://www.oriana.org/

Chicago a cappella
- Sings choral repertoire with a small and mighty group of nine soloists. Features performance schedule, recordings, concerts, biography, and contacts.
- http://www.chicagoacappella.org/

Chicago Community Chorus
- One hundred singers from all walks of life perform choral literature by the great composers from the fifteenth century to the present. Site offers information on auditions, performances, training and instruction, and contacts.
- http://chicagocommunitychorus.org/

Chicago Children's Choir
- A multiracial, multicultural choral music education organization. Offers information on its history, staff, ensembles, alumni, scrap book, events calendar, partnership opportunities, and contacts.
- http://www.ccchoir.org/

Apollo Chorus of Chicago
- Founded by prominent citizens in 1872 after the Great Fire, to lift the city's spirit. Information on tickets, performances, rehearsals, newsletters, and contacts.
- http://www.apollochorus.org/