Do you know any FPGA vendors other than Xilinx and ALTERA?

low-tier FPGA companies: Lattice Semiconductor, SiliconBlue, Acrhonix, Quicklogic
start-ups: InPa

In that an FPGA vendor called Actel is bought by Microsemi.

Microsemi FPGA named product of the year
http://dangerousprototypes.com/2011/01/22/microsemi-fpga-named-product-of-the-year