openbiosprog is a fully Open Hardware and Free Software programmer for BIOS chips.
The first version will support Low Pin Count (LPC) chips, later versions might add support for parallel flash chips and SPI chips.
openbiosprog-spi is a fully Open Hardware and Free Software USB-based programmer for SPI chips, e.g. those used as BIOS chip in recent mainboards.
The user-space source code is part of flashrom (GPL, version 2), the schematics and PCB layouts are licensed under the CC-BY-SA 3.0 license and were
... [More] created using the open-source Kicad EDA suite (GPL, version 2). [Less]
Self-contained NodeMCU flasher with GUI based on esptool.py and wxPython.
NodeMCU PyFlasher doesn't have to be installed, just double-click it and it'll start. Check the releases section for downloads for your platform. For every release there's at least a .exe file for Windows. Starting from 3.0 there's also a .dmg for macOS.