sitcoms filmed/taped before a live audience

[Brian]

Barney Miller
The Mary Tyler Moore Show
All in the Family
Maude
The Jeffersons
Welcome Back, Kotter
The Dick Van Dyke Show
I Love Lucy
The Bob Newhart Show
Three's Company
Cheers
Happy Days
Laverne and Shirley
Chico and the Man
The Odd Couple
Newhart(?)
Diff'rent Strokes(?)
The Facts of Life(?)

Any other shows missing?

[Truth]

Family Matters was sometimes.

[TV Guy]

Excuse the nitpicks:

The first season of "Happy Days" and most of the second season were not filmed in front of an audience. Neither was the first season of "The Odd Couple", and neither was the last season of "All in the Family".

There are a bunch more that were done in front of an audience, since that was the format of choice during the 80s and 90s. During those decades, I'd say that the majority of sitcoms were done in front of an audience, and it's probably easier to list those that weren't.