discord-interactions https://discord.gg/bjq6np9B8A (docs, github)
discord.py-message-components https://discord.gg/RAzvhvtHCS (docs, github)
diskord https://discord.com/invite/CrFAdFezKa (docs, github)
dis-snek https://discord.gg/cPH6ddgYYE (docs, github)
disnake https://discord.gg/4zs4QBqfxD (github)
enhanced-dpy / edpy https://discord.gg/kkUH8ZWCHj (docs, github)
hata https://discord.com/invite/3cH2r5d (docs, github)
hikari https://discord.gg/hxXDMzdNCd (docs, github) (note: Carberra Tutorials also offers Hikari support)
nextcord https://discord.gg/hzZZEAmaxG (github, docs)
Novus https://discord.gg/QqERGSKepV (github, docs)
pycord https://discord.gg/U7J4TbDETd (github, docs)
various alternatives that may or may not be good. Not all (e.g hata, hikari) are forks of d.py - I know Hikari has been around for awhile. Probably best to wait a bit before jumping onto one
edit: Aside from these, there are others listed on GitHub and PyPi. Most tend to be very new, have very low following, and/or haven't changed much or anything from d.py.