Third-party notices

Android Link (the Mac app and the Android app) includes the following open-source software. Each is used under the licence named, whose full text is linked. The website shows this page at https://getlinked.now/notices, and both apps link to it from About.

Component	Used in	Licence
Google Sans Flex font, © Google LLC	Mac app, Android app, website	SIL Open Font License 1.1 (copy in `shared/designsystem/GOOGLE-SANS-FLEX-LICENSE.txt`)
Material Symbols icons, © Google LLC	Mac app, Android app	Apache License 2.0
Bouncy Castle Crypto (X25519), © The Legion of the Bouncy Castle Inc.	Mac app, Android app	Bouncy Castle Licence (MIT)
Kotlin standard library, kotlinx.coroutines, kotlinx.serialization, © JetBrains s.r.o.	Mac app, Android app	Apache License 2.0
Compose Multiplatform and Material 3, © JetBrains s.r.o. and The Android Open Source Project	Mac app, Android app	Apache License 2.0
AndroidX (Core, Activity, Lifecycle, Window, Room), © The Android Open Source Project	Android app	Apache License 2.0
Java Native Access (JNA), © Timothy Wall and contributors	Mac app	Apache License 2.0 (dual-licensed with LGPL 2.1; used under Apache 2.0)
The Java runtime bundled by jpackage (OpenJDK), © Oracle and contributors	Mac app	GPL 2.0 with the Classpath Exception
WebRTC (libwebrtc), © The WebRTC project authors	Mac app, Android app	BSD 3-Clause and its patent grant
webrtc-java, © Alex Andres	Mac app	Apache License 2.0
libusb, © the libusb authors	Mac app	GNU LGPL 2.1: its unmodified 1.0.30 release, built from source (libusb.info) as its own dynamic library, which can be replaced
FFmpeg, © the FFmpeg developers	Mac app	GNU LGPL 2.1 or later (copy in the app at `Contents/app/resources/mac/ffmpeg-COPYING.LGPLv2.1`): its unmodified 8.1.3 release, LGPL parts only, built from source as its own program (`Contents/app/resources/mac/ffmpeg`), which can be replaced; see "FFmpeg" below
webrtc-sdk for Android (LiveKit's libwebrtc build), © LiveKit, Inc.	Android app	MIT
Firebase Cloud Messaging and Firebase common libraries, © Google LLC	Android app	Apache License 2.0
AndroidX Credential Manager, © The Android Open Source Project	Android app	Apache License 2.0
Google ID library for Credential Manager, © Google LLC	Android app	Apache License 2.0

FFmpeg

The Mac app ships FFmpeg to capture and encode the Mac's screen (Extend, Remote screen) and to decode the device's screen and camera (Mirror, Camera). This software uses code of FFmpeg licensed under the LGPL version 2.1 or later; its source can be downloaded from ffmpeg.org (below). FFmpeg is a trademark of Fabrice Bellard.

Version: 8.1.3, unmodified: ffmpeg-8.1.3.tar.xz, SHA-256 7138d28c96d9d3e3af4ee3d8cad72741f8ffb40da90c1112235dea3ecd3178a3.
Licence: LGPL 2.1 or later only. It is built without --enable-gpl, --enable-nonfree or --enable-version3 and with no external libraries (no x264, no x265); video is encoded by macOS's own VideoToolbox.

How it is built (arm64, macOS 13 or later, MACOSX_DEPLOYMENT_TARGET=13.0):

./configure --arch=arm64 --cc=clang \
  --extra-cflags="-arch arm64 -mmacosx-version-min=13.0" \
  --extra-ldflags="-arch arm64 -mmacosx-version-min=13.0" \
  --disable-everything --disable-autodetect --disable-doc --disable-debug \
  --disable-ffplay --disable-ffprobe --enable-static --disable-shared \
  --enable-avfoundation --enable-videotoolbox \
  --enable-indev=avfoundation --enable-demuxer=h264 --enable-muxer=flv,rawvideo \
  --enable-protocol=pipe,tcp --enable-decoder=h264,rawvideo \
  --enable-encoder=h264_videotoolbox,hevc_videotoolbox,rawvideo \
  --enable-hwaccel=h264_videotoolbox,hevc_videotoolbox --enable-parser=h264,hevc \
  --enable-filter=buffer,buffersink,abuffer,abuffersink,format,aformat,null,anull,fps,scale,transpose,hflip,vflip,pad,setsar
make ffmpeg

ffmpeg -buildconf run on the copy in the app prints the same options.

Replacing it: the app runs FFmpeg as a separate program and doesn't link it. You may replace Android Link.app/Contents/app/resources/mac/ffmpeg with your own build (re-sign the app with codesign --force --deep --sign - "Android Link.app" so macOS opens it).
Written offer: for at least three years from the last time we distribute this version of the app, we will give anyone who asks a copy of the complete corresponding source of the FFmpeg we ship, on a medium customarily used for software interchange, for no more than the cost of providing it. Write to hello@getlinked.now.