This is just a collection of small tools I've made over time for various purposes. None of them really deserve their own repository so I've just made this one for all of them. They're usually just for a one-off or extremely specific purpose, sometimes made completely redundant (e.g. there's a QuickBMS script or better program), but I still think it's a good idea to share the code, if only for archival purposes.
List of programs
Converts AGI files from Arcana Heart for PS2 to PNG.
An extractor for .bar files from the iPhone game New York Nights. More info: http://www.vg-resource.com/thread-24058.html
Parses the .atls files output by BastionPkgExtract along with the converted XNB files. Extracts the individual frames in an organised folder structure.
Allows you to extract and create .bftm files from Blocks That Matter. I made a QuickBMS script for these here: http://zenhax.com/viewtopic.php?t=512
Converts (some) .brg files from The Famous Five video games to PNG. More info: http://www.vg-resource.com/thread-25613.html
Converts .bstga files from MySims (DS version) and probably other DS games to PNG. More info: http://www.vg-resource.com/thread-28785.html
Converter for .csr and .col files from Castlevania: Harmony of Despair. More info: http://www.vg-resource.com/thread-26970.html
Merges two .dsp files into a single stereo WAV file, using one as each channel. Made to merge the files in Metal Gear Solid: The Twin Snakes. More info: http://www.vg-resource.com/thread-24613.html
Extracts images from Kung Fu Do Fighting's .chr files. More info: https://www.vg-resource.com/thread-31300.html
Extracts .dat files from Cosmic Bug using .bbk files. More info: http://www.vg-resource.com/thread-28860.html
Reads in and colours .dds.gz files from Dengeki Bunko: Fighting Climax Ignition using .cg files. Planning to add reconstruction of the sprites. More info: https://www.vg-resource.com/thread-29860.html (Thread includes script to extract .pac files)
A tool to organise spritesheets from Final Fantasy: Brave Exvius using its .csv files. More info: http://www.vg-resource.com/thread-27841.html
Extractor for the .flb files in the iOS version of Final Fantasy VI. More info: http://www.vg-resource.com/post-560026.html
Converts .gxt files from Patapon 1 and 2 to PNG. More info: http://zenhax.com/viewtopic.php?t=647
Converts .hip files. Works for Persona 4 Arena Ultimax and Arcana Heart 3 Love Max Six Stars. More info: http://www.vg-resource.com/thread-27359.html
Converts .icp files from the iOS version of Final Fantasy 5. These are extracted from the .bin files using the script here: http://zenhax.com/viewtopic.php?t=730 More info: http://www.vg-resource.com/thread-26815.html
Helper tool to colour sprites from Lethal League. Mostly for private use right now (lots of hard coded stuff), but sharing the code for those interested.
Extracts mas.cvf from Metal Assault. More info: http://www.vg-resource.com/thread-26525.html
Extracts graphics from Nuga-Cel's .uni files. More info: http://www.vg-resource.com/thread-28093.html
Converts .tmx files (or .bins containing them) from Persona 4 Golden to PNG. More info: http://www.vg-resource.com/thread-28615.html
Extracts .pk1 files from Super Robot Taisen OG Saga - Endless Frontier. More info: http://www.vg-resource.com/thread-15341-post-530462.html#pid530462
Converts a certain type of .rle format to PNG.
Made to convert .DDS_ files from Folklore to regular DDS. Basically just reverses a bunch of header fields, nothing too fancy. More info: https://www.vg-resource.com/thread-29910.html
Unpacks spritesheets made by TexturePacker using XMLs. Specifically used for Out There Somewhere.
Converts .tgab and .pngb files from Toy Soldiers to PNG. Also converts from PNG to .tgab or .pngb. More info: http://zenhax.com/viewtopic.php?t=667