Hi Davorin,
Besides Xilinx and Altera (2 biggest and broadest portfolio so far) you have Actel and Lattice. I know Lattice for years from CPLDs and SPLD (broadest portfolio and highest performance). A couple of years ago they acquired Lucent FPGA's. These are very telecom centric and not as cheap as Cyclone and Spartans but you can get higher performance out of it. Also, they developped their own FPGA (XPGA). This family has EEPROM on board and is therefore non-volatile, instant-on (very nice feature). ON top of that they included some serdes channels for serial communication chip to chip and board to board.
Prices start at low 20's (of course depending on the quantities).
If you look at their website, you will notice they announced some new families (look for Fujitsu deal) - Very promissing!
Regards,
L