Meteor Client 1.21- 1.20.6 -- 1.16.5 !!link!! -

But Meteor Client claimed to bridge versions 1.21 down to 1.16.5. That was absurd. Most clients locked you into one version. Meteor supposedly rewrote packets on the fly, retrofitting modern exploits into ancient server protocols.

Meteor Client is actively updated to support the latest versions of Minecraft while maintaining archives for older releases. Minecraft 1.21 - 1.21.x

Using Meteor Client on servers that explicitly disallow utility mods can lead to bans. Always check server rules.