F4PGA

“F4PGA is a fully open source toolchain for the development of FPGAs of multiple vendors. Currently, it targets the Xilinx 7-Series, Lattice iCE40, Lattice ECP5 FPGAs, QuickLogic EOS S3 and is gradually being expanded to provide a comprehensive end-to-end FPGA synthesis flow.”

• f4pga-arch-defs: F4PGA Architecture Definitions + Tooling (Xilinx 7 Series, QuickLogic)
• yosys-f4pga-plugins: plugins for Yosys developed as part of the F4PGA project
• sphinxcontrib-hdl-diagrams: Sphinx Extension which generates various types of diagrams from HDL code
• f4pga-bitstream-viewer: tool for graphically viewing FPGA bitstream files and their connection to FASM features

References:

• SymbiFlow
• Project X-Ray (Xilinx 7 Series tooling)
• Project U-Ray (Xilinx Ultrascale Series tooling)
• Yosys
• NextPNR
• Verilog to Routing
• Versatile Place and Route
• FASM
• LiteX