Since I took interest in FPGA, I remarked that the majority of open source board use xilinx. Although, now with the new open source tool-chain, thing could change in favor of lattice. I find it a little bit strange, considering that xilinx is not the only big player in town, and also that Altera is very popular in university. Majority of project we see on the internet is made using some Altera board, like the DE2. And most hobbyist are student or graduated that do some fun. So its a little bit strange then that most board are xilinx. Which board?? Lets name a few:
- FPGA shield for arduino
- FPGA hat for Raspberry pi
- FPGA shield for beaglebone
- Papilio serie
- Mojo
- Many papilio clone
- Hackaday FPGA
I don't know of any cyclone open source board
Lattice:
Fleafpga
Nand2go or something like that don't remember the name.
On the AVR case, we understand that opensource scene settled on them because of the availability of gcc, but for xilinx, I can't see advantage/(or disadvantage) over Altera