I'll collect links to community mods here.
Keep in mind, you need the corresponding Steam or MangaGamer Hou edition games to use these mods.
MangaGamer store pages are not linked to here because of the NSFW nature of the MangaGamer store.

Chapter 1. Onikakushi
Chapter 2. Watanagashi
Chapter 3. Tatarigoroshi
Chapter 4. Himatsubushi
Chapter 5. Meakashi
Chapter 6. Tsumihoroboshi
Chapter 7. Minagoroshi
Umineko Question Arcs
Umineko Answer Arcs


*Note that these links are to the Voice + Graphics patch installers, they should service all of the games already released, but keep in mind that mods for recently released titles may not be finished yet.
If you require a different patch please see the link below the "Other links" heading, further down on this page.

Higurashi Full Series Installer[07th-mod.com]
Umineko Full Series Installer[07th-mod.com]

(These installers are currently in development, older installers are no longer supported)
Now supports MacOS and Linux versions of the games!
Now supports reverting back to the original soundtrack!

Console exclusive arcs feature
*This mod can install an alternative version of Himatsubushi and requires a copy of that game to play.
If used, your copy of Himatsubushi will be overwritten with:

• Someutsushi
  
• Kageboushi
  
• Tsukiotoshi
  
• Taraimawashi
  
• Tokihogushi
  
• Yoigoshi

Alternative 07th Modding links
Higurashi links[07th-mod.com]
Umineko links[07th-mod.com]

JmTrad's Original sprites HD remaster
(This mod does not work alongside the full PS3 Assets mod, but will work with the voice only mods)
Higurashi Hou
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6

fllthdcrb's music patch (Higher fidelity BGMs)
Available in 44.1KHz and 48.0KHz lossless formats.
Higurashi Hou Chapters 1-4


Of course, none of these mods are my own work, the community owes a lot to the hard work of 7th Modding and their tireless efforts to improve the Higurashi experience for everyone.
07th Modding home page[github.com]
07th Modding Discord[discord.gg]