A tweak-class mod loader for Minecraft. Should be compatible with any version of Minecraft capable of working under Launchwrapper.
Meddle acts as a pass-through to allow mods which implement net.minecraft.launchwrapper.ITweaker to run without the modder having to deal with manually installing them.
Mods must include a Tweak-Class directive in the jar manifest to point to the appropriate class to load.
Mod jars go into the minecraft_instance_folder/Meddle directory.
If desired, mods may include the MeddleMod annotation on their tweak class to designate an ID, name, author, version, and mod dependencies.
See the DynamicMappings and MeddleMods projects for examples of Meddle's use.
For higher-level development, there's also MeddleAPI, which is what Just Backpack uses.