nextpnr aims to be a vendor neutral, timing driven,
FOSS FPGA place and route tool.

Currently nextpnr supports:
  - Lattice iCE40 devices supported by Project IceStorm
  - Lattice ECP5 devices supported by Project Trellis
  - Lattice Nexus devices supported by Project Oxide
  - Gowin LittleBee and Aurora V devices supported by Project Apicula
  - NanoXplore NG-Ultra devices supported by Project Beyond
  - Cologne Chip GateMate devices supported by Project Peppercorn
  - (experimental) Cyclone V devices supported by Mistral
  - (experimental) Lattice MachXO2 devices supported by Project Trellis
  - (experimental) Xilinx 7-series devices supported by Project X-Ray
  - (experimental) a "generic" back-end for user-defined architectures