It can rename, sort, zip, unzip, delete duplicates, trim headers and footers and fix bad dumps. Meka Configurator is a program for configuring Meka. It can edit almost every setting in Meka's various configuration files which is not changeable within Meka, and a lot which are. Here's some other stuff I've done, which isn't on this site. SMS cover scans aims to be the biggest archive of Master System box and cartridge art scans on the internet.
All submissions are welcome.
It hasn't been worked on for a long time, but does work. SMS Checksummer is a program which checks SMS roms' internal checksum. It has mostly been rendered obsolete by Header reader . The ugly any-browser page contains information on all of the above programs, but using minimal HTML tags. It's for people who can't use the rest of the pages, which require a modern browser capable of using style sheets - they're designed on Internet Explorer.