Knight Foundation's single focus is media and journalism. For example, MapBox came out of a $200k grant they provided. I'm sure there are a lot of developers and start-ups they have or are currently are funding who can use more support. You might want to talk to them about what people are doing in the field.
Agreed, when I lived in Miami (last year) knight was funding so many awesome ventures. I wouldn't say they have many developers but they are very receptive to having people come in to pitch an idea and they also host many events to come in and request funding.
