Add open with Neovide Option in Windows 10

1. Open Notepad or your preferred text editor

2. Copy the script below
   

Windows Registry Editor Version 5.00
; Open files
[HKEY_CLASSES_ROOT\*\shell\Open with Neovim]
@="Edit with Neovim"
"Icon"="C:\\Program Files\\neovide\\neovide.exe,0"
[HKEY_CLASSES_ROOT\*\shell\Open with Neovim\command]
@="\"C:\\Program Files\\neovide\\neovide.exe\" \"%1\""

; This will make it appear when you right click ON a folder
; The "Icon" line can be removed if you don't want the icon to appear
[HKEY_CLASSES_ROOT\Directory\shell\neovide]
@="Open Folder as Neovim Project"
"Icon"="\"C:\\Program Files\\neovide\\neovide.exe\",0"
[HKEY_CLASSES_ROOT\Directory\shell\neovide\command]
@="\"C:\\Program Files\\neovide\\neovide.exe\" \"%1\""

; This will make it appear when you right click INSIDE a folder
; The "Icon" line can be removed if you don't want the icon to appear
[HKEY_CLASSES_ROOT\Directory\Background\shell\neovide]
@="Open Folder as Neovim Project"
"Icon"="\"C:\\Program Files\\neovide\\neovide.exe\",0"
[HKEY_CLASSES_ROOT\Directory\Background\shell\neovide\command]
@="\"C:\\Program Files\\neovide\\neovide.exe\" \"%V\""

1. Paste it in the text editor

2. Save the file as neovideOpenFolder.reg

3. Run the file.

Now you can have a nice open with Neovim option.

If it doesn't work check the paths of Neovide in the script.
You can also change Neovim to Neovide if you like.