Open-Source FPGA Toolchains

The proprietary tools are painful! I never really used FPGAs outside of school until there were other options. Look at the open source yosys/nextpnr toolchain. Your best bet is to use lattice ice40 or ecp5 FPGAs with it, they’re very well supported.

FPGA tools, with few exceptions (IceStorm, SymbiFlow)

Any FPGA's available yet with an open(ish) toolchain? Including the bitstream generator/programmer?

Are there any fpga development workflows that use all FOSS (software) components?

Noob question: Does this have implications for open source FPGA development, or are the technologies not compatible?

Have you looked at F4PGA? They are working on exactly that.https://f4pga.org/

Is there high performance FPGA that does not depend on proprietary bloated windows-only toolchain?

Is there an FPGA with a totally Free and Open toolkit yet?

It's just possible to invest in the open-source solutions then, like e.g. Yosys, SymbiFlow, KiCAD, etc

> Open source tooling is very primitive and not usableMaybe you're working off old information, but the FOSS tooling (ghdl, yosys, nextpnr) is completely sufficient for hobbyists. If you're doing huge, high-speed designs on expensive FPGAs, sure, use the vendor tools, but for your average iCE40/ECP5-scale design, FOSS is the way to go.