Source: https://seerepo.com/compare/icsharpcode/ILSpy/vs/Tyrrrz/YoutubeDownloader
Markdown source: https://seerepo.com/compare/icsharpcode/ILSpy/vs/Tyrrrz/YoutubeDownloader.md
Description: ILSpy and YoutubeDownloader share 3 technologies: Avalonia.Desktop, Avalonia, and CommunityToolkit.Mvvm. Both are written in C#.

# ILSpy vs YoutubeDownloader

ILSpy and YoutubeDownloader share 3 technologies: Avalonia.Desktop, Avalonia, and CommunityToolkit.Mvvm. Both are written in C#.

- [icsharpcode/ILSpy](https://seerepo.com/r/icsharpcode/ILSpy): .NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!
- [Tyrrrz/YoutubeDownloader](https://seerepo.com/r/Tyrrrz/YoutubeDownloader): Downloads videos and playlists from YouTube

## What they share and what sets them apart

- In common: Avalonia.Desktop, Avalonia, CommunityToolkit.Mvvm
- Only in ILSpy: Microsoft.Extensions.Hosting, Avalonia.AvaloniaEdit, ProDataGrid, Svg.Controls.Skia.Avalonia, Xaml.Behaviors.Avalonia, AvaloniaEdit.TextMate, Magick.NET-Q8-AnyCPU
- Only in YoutubeDownloader: DialogHost.Avalonia, TagLibSharp, Markdig

## Side by side

| | ILSpy | YoutubeDownloader |
|---|---|---|
| Size | 403,634 lines written, 1,191 code files | 5,051 lines written, 68 code files |
| Who writes it | 12.8% of its commits signed by AI. With Claude Code, GitHub Copilot, and opencode | 3.7% of its commits signed by AI. With GitHub Copilot and Cursor |
| Activity | Last push November 8, 2026, 9,052 commits, 27,012 stars | Last push November 6, 2026, 709 commits, 16,657 stars |
| Tests | 721 test files. 41.1% of its code files have a test that imports them | 0 test files |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, ILSpy or YoutubeDownloader?

ILSpy, with 403,634 lines written; YoutubeDownloader has 5,051.

The proof: [icsharpcode/ILSpy's code at commit 085a36d](https://github.com/icsharpcode/ILSpy/tree/085a36d8ca0ca2fe49cb159c46a31411b7355c11)

### Which has more GitHub stars, ILSpy or YoutubeDownloader?

ILSpy, with 27,012 stars; YoutubeDownloader has 16,657.

The proof: [icsharpcode/ILSpy on GitHub](https://github.com/icsharpcode/ILSpy)

### Which has more tests, ILSpy or YoutubeDownloader?

ILSpy, with 721 test files.

The proof: [icsharpcode/ILSpy's code at commit 085a36d](https://github.com/icsharpcode/ILSpy/tree/085a36d8ca0ca2fe49cb159c46a31411b7355c11)

### Which was updated more recently, ILSpy or YoutubeDownloader?

ILSpy: its last push was on November 8, 2026, and YoutubeDownloader's on November 6, 2026.

The proof: [icsharpcode/ILSpy's commits on GitHub](https://github.com/icsharpcode/ILSpy/commits)

### Which has more commits signed by AI, ILSpy or YoutubeDownloader?

ILSpy: an AI signed 12.8% of its commits, with Claude Code, GitHub Copilot, and opencode; in YoutubeDownloader, 3.7%.

The proof: [the commits each tool signed in icsharpcode/ILSpy](https://seerepo.com/r/icsharpcode/ILSpy/ai)

## Sources

- icsharpcode/ILSpy: Read on November 8, 2026, at commit 085a36d (https://github.com/icsharpcode/ILSpy/tree/085a36d8ca0ca2fe49cb159c46a31411b7355c11)
- Tyrrrz/YoutubeDownloader: Read on November 7, 2026, at commit a419ef2 (https://github.com/Tyrrrz/YoutubeDownloader/tree/a419ef2be70392e57d31bd5103f1d6d0d20b3919)

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.