This mod adds a 360 degree third person rotation mode. Originally a port of Perspective Mod by Canelex based off of the 1.7.10 version, but has since materialized itself into its own original code.
If you need a version for a specific Minecraft version, please check the Files Tab before asking!
1.8.9 Users: Use Optifine L5 or newer (e.g. preview versions).
Regarding Forge 1.17: MultiMC does not and will not support Forge 1.17's launching changes due to 1.17 being a stopgap update. cpw (one of the Forge devs) has also made this same statement on Twitter.
In addition, Forge 1.17 would have to require MixinBootstrap again.
Only reason there is a Fabric 1.17 version is because it's easy to port and it's something I use, since I've used Fabric for my vanilla instances since 1.14.
Default Keybind: F4
Mod review for original: