Most contributions to a computer program in 24 hours (single venue)
Who
Avanade Inc.
What
806 people
Where
United States (Houston)
When

The most contributions to a computer program in 24 hours is 806, achieved by Avanade Inc., in Houston, Texas, USA, on 20 October 2016.

This attempt was done at the 2016 Grace Hopper conference that celebrates women in technology and computing, at the George R. Brown Convention Center.