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Subtitle Edit vs Aegisub (arch1t3cht fork): catalog facts
Subtitle Edit	Aegisub (arch1t3cht fork)
Free Free and open source under the MIT licence.	Free Free and open source.
Windows, macOS, Linux	Windows, macOS, Linux
Waveform and spectrogram make timing subtitles straightforward Reads and writes over two hundred subtitle formats	Actively maintained continuation of Aegisub Extra features merged from feature branches
Windows needs 10 version 22H2 or newer; older builds fail with a .NET error macOS 12 is the minimum and macOS 14 or newer is recommended	Feature details are spread across the README and release notes Mixed licensing across components
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: BSD-3-Clause, MIT and others
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 2, 2026

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