Multiversion ModWebsite: https://reddit.com/r/GoldenAgeMinecraft/comments/6ruu5v/minecraft_multiversion_mod_alpha_11_to_beta_17/
The Multiversion mod is a mod for Beta 1.7.3 that allows you to connect to the last patch of any multiplayer version from Alpha 1.1 to Beta 1.7.
Multiplayer compatibility with the versions listed above
Server list that saves the server's version, I.P. address and name
Old sounds and textures
For Minecraft b1.7.3