flashrom (http://www.flashrom.org/) recently got support for DOS (it has been available for Linux/FreeBSD/NetBSD/MacOSX for quite some time). I thought maybe some people would be interested.
Advantages:
- Free
- Support for pretty much every modern flash chip (especially SPI flash)
- Support for pretty much every chipset released in the last 12 years (some new Nvidia chipsets are work in progress)
- Support for a few network cards, SATA/PATA(IDE) controllers, graphics cards
- Support for external flasher/programmer hardware (in case you don't want to hotflash/crossflash), e.g. cheap FT2232H USB cables, expensive dedicated Dediprog programmers
- Active development
- Open source (GPL)
- Support on the flashrom mailing list (if you like mailing lists) and IRC
- If something goes wrong, you can ask the developers for a patch before you reboot
- Reflash from a running system, no enforced reboot. If something goes wrong while flashing under Linux/..., you can keep using the machine and retry as often as you want (well, until you switch the machine off)
- Crossflashing/hotflashing supported (flashrom doesn't check mainboard/ROM matching at all)
- If you want support for an unsupported chip, just ask
- Doesn't support Windows yet (well, some stuff is supported under Windows and there are patches for full functionality)
- You have to compile the source code yourself
