ilspy

Install command: 
brew install --cask ilspy

Name: ILSpy

Avalonia-based .NET decompiler

https://github.com/icsharpcode/AvaloniaILSpy

Cask JSON API: /api/cask/ilspy.json

Cask code: ilspy.rb on GitHub

Current version: 7.2-rc

Current version requires: macOS >= 10.11

Versions:

Intel sequoia 7.2-rc
sonoma 7.2-rc
ventura 7.2-rc
monterey 7.2-rc
big sur 7.2-rc
catalina 7.2-rc
mojave 7.2-rc
high sierra 7.2-rc
sierra 7.2-rc
el capitan 7.2-rc

Analytics:

Installs (30 days)
ilspy 243
Installs (90 days)
ilspy 733
Installs (365 days)
ilspy 2,313
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