[robinsonb5]

Yosys / project Trellis and nextpnr are amazing - I've played with them using an IceSugar-Pro board (which despite its name has an ECP5-25 FPGA) - but there's also an experimental branch for Xilinx 7-series devices now - Project X-ray, with an even more experimental branch of that targetting the Kintex7-325 FPGA on one of the QMTech (AliExpress) boards. That's of particular interest since that FPGA is large / high-end enough not to be supported by the free version of Vivado!