Lunar IPS – can create and apply IPS patches to ROM files, usually used to apply language patches.
uCON64 – used for reading the information about ROM files
NES/Famicom
famiROM – used to split NES ROMs to the appropriate CHR and PRG files for burning to chips.
SNES/SFC
Lunar Expand – used to expand SNES ROMs to fill specific chip sizes.
IpsAndSum – used to recalculate and update checksums for SNES ROMs. Particularly useful for getting hacks and translations to show a “good” checksum after patching.
SNES Rom Utility (Wasabi) – used to convert ROM files to usable BIN files for burning to chips. Can also remove headers and split files for spreading to multiple chips.
StripSNES – used to remove or add headers to SNES ROM files, useful if the file cannot be opened by SNES Rom Utility.