JOVAN
DONEV
17-year-old developer building open-source tools that actually work. Automation, Python utilities, and stuff that makes life easier.
My Programs
Auto-updating downloader powered by yt-dlp and FFmpeg. Zero interaction required — paste, convert, done.
Simple bulk email tool — send up to 500 emails per session. Supports Gmail, Yahoo, Outlook, Hotmail, and custom SMTP.
The big brother of MailBlast. Chain unlimited Gmail accounts from a single accounts.txt file and blast way, way more than 500 emails.
Generate and scan QR codes. More barcode formats coming soon. Exports as PNG.
Who am I
I'm Jovan Donev, a 17-year-old developer known as SigmaSigma. I build tools that solve real problems — automation scripts, converters, and utilities that people actually use. Yes, for free. No, I don't know why either.
Everything I ship is built with Python and packaged as standalone executables. No installs, no dependencies — just download and run. You're welcome.
Email Me