ModLoader mods
4 mods match your filters.
Earsby exaptations
More skin customization options for just about every version + skin backports/fixes for pre-1.9 versions.
FabricForgeNeoForgeQuilt+5
b1.7.3 – 26.3
LegacyVoiceChatby Moyettes
Proximity voice chat for legacy versions
BabricBTA BabricOrnitheModLoader
b1.0 – 1.8.1
Pwn's Skin Fixby workspacepwnage
Pretty self explanatory... But, this is a skin fix for Release 1.0
ModLoader
1.0
Better Beta Chatby Leviaria
Brings modern text editing to the classic Minecraft Beta 1.7.3
ModLoader
b1.7.3