Solar Tweaks Client (1.21.6, 1.21.5) is a modification pack for Lunar Client. By modifying the game’s code when it gets loaded, this client adds a variety of features that enhance your Minecraft experience. It allows you to tweak Lunar Client to your liking and re-enable some features that are completely disabled such as Freelook or AutoTextHotkey.
Source: Solar Tweaks Client (1.21.6, 1.21.5)
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