Halo: CE (aka. Halo 1) was released on November 15, 2001.
Halo Reach, Halo: Combat Evolved, Halo 2, Halo 3: ODST, and Halo 3 were made by Bungie; Halo: Wars was created by Ensemble Studios; Halo: Combat Evolved Anniversary and Halo 4 were created by 343 Interactive
Halo effect was created in 1920.
Halo in a Haystack was created in 1994.
Halo Friendlies was created in 1998.
Halo Star was created in 2004.
Halo James was created in 1988.
Dime with a Halo was created in 1963.
The Halo Benders was created in 1993.
Arbiter - Halo - was created in 2004.
Halo - bar - was created in 2004.
Luna Halo was created in 1999.
Devil's Halo was created in 2008.