@olegche

Oleg Che

@olegcheJoined October 2026

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Oleg Che's blogs

OlegCheolegche.hashnode.dev2 posts

A Markdown notes app for Windows without a WebView: C#, Avalonia and AvaloniaEdit, a one-second start

I wanted a notes app where notes are plain .md files in a normal folder, with [[links]], backlinks and search, and where the text already looks formatted while I type, without a separate preview pane.

2h ago · 9 min readolegche.hashnode.dev

Building a local-first Windows app on yt-dlp: embedded Python, a localhost-only Flask server, and DNS-rebinding protection

Universal Downloader is a free, open-source Windows app that wraps yt-dlp: paste a link from YouTube, SoundCloud, Vimeo or one of 1000+ other sites, pick a quality, get a file. I originally wrote it f

21d ago · 5 min readolegche.hashnode.dev

Oleg Che

About

Available for

Oleg Che's blogs

A Markdown notes app for Windows without a WebView: C#, Avalonia and AvaloniaEdit, a one-second start

Building a local-first Windows app on yt-dlp: embedded Python, a localhost-only Flask server, and DNS-rebinding protection

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Oleg Che

About

Available for

Oleg Che's blogs

A Markdown notes app for Windows without a WebView: C#, Avalonia and AvaloniaEdit, a one-second start

Building a local-first Windows app on yt-dlp: embedded Python, a localhost-only Flask server, and DNS-rebinding protection