Open-source licenses

Dérush is built on open-source software. Here's what the Mac app ships with, with each licence and where to find its source code.

The Mac app's tools

ffmpeg 9.0.2 — GPL-3.0-or-later (built with libx264 and libx265) · Source code · Build scripts
ffprobe 9.0.2 — GPL-3.0-or-later (built with libx264 and libx265) · Source code · Build scripts
exiftool 13.59 — Artistic-1.0-Perl OR GPL-1.0-or-later (run by macOS's own /usr/bin/perl) · Source code
cloudflared 2026.7.3 — Apache-2.0 · Source code

What the app is built on

Electron, Chromium, Node.js — MIT, BSD-3-Clause and others (notices inside the app) · Source code
PostgreSQL — PostgreSQL License · Source code
pgvector — PostgreSQL License · Source code
Python (python-build-standalone) — PSF-2.0 · Source code
GeoNames (place names) — CC-BY-4.0 · Source code

The JavaScript and Python libraries the app uses ship with their licence, inside the app.

The iPhone app

Capacitor — MIT · Source code

ffmpeg and the GPL

ffmpeg and ffprobe are distributed under the GPL, version 3 or later (they're built with x264 and x265). Their source code and the scripts used to build them are at the addresses above. Just ask at bonjour@derush.ai and we'll send it to you too, for at least three years after the last version of Dérush that includes them.