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Aegisub (arch1t3cht fork) vs Aegisub: catalog facts
Aegisub (arch1t3cht fork)	Aegisub
Free Free and open source.	Free Free and open source.
Windows, macOS, Linux	Windows, macOS, Linux
Actively maintained continuation of Aegisub Extra features merged from feature branches	Precise timing of subtitles to audio Detailed styling tools
Feature details are spread across the README and release notes Mixed licensing across components	Interface takes time to learn Focused on subtitles, not general video editing
Downloadable app	Downloadable app
Open source	Open source
License: BSD-3-Clause, MIT and others	License: BSD
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.