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Open source

Built on other people's work.

Barium is a native app, but almost none of the hard cryptography in it is ours. These are the components it ships and the licenses they use.

Matrix
matrix-rust-sdk
The Matrix.org Foundation C.I.C. · Apache License 2.0

Barium builds this SDK from source with one modification: a patch adding encrypted to-device messaging APIs used for call key exchange. The modified file carries a change notice, as the licence requires.

Rust components
Various authors · MIT, Apache-2.0, MPL-2.0, BSD and similar
Calls
LiveKit Swift SDK
LiveKit, Inc. · Apache License 2.0
github.com/livekit/client-sdk-swift ↗Ships a NOTICE file, reproduced in the app
LiveKitWebRTC
WebRTC SDKs; Google and the WebRTC project authors · MIT and BSD 3-Clause

The framework packaging is MIT-licensed; the WebRTC engine it contains is BSD-licensed by the WebRTC project, with an additional royalty-free patent grant distributed alongside WebRTC as its PATENTS file. Both licences follow.

LiveKitUniFFI
LiveKit, Inc. · Apache License 2.0
SwiftProtobuf
Apple Inc. and the SwiftProtobuf project authors · Apache License 2.0
Audio
SwiftOGG
New Vector Ltd (Element) · Apache License 2.0
YbridOpus (opus-swift)
nacamar GmbH – Ybrid®; includes Opus by Xiph.Org and contributors · MIT, with Opus under BSD 3-Clause
YbridOgg (ogg-swift)
Ybrid®; includes Ogg by the Xiph.Org Foundation · MIT, with Ogg under the New BSD License

Each license is reproduced in full inside Barium, under Settings › About › Open-Source Licenses, exactly as its authors wrote it. Matrix is a trademark of the Matrix.org Foundation C.I.C.; Barium Labs, LLC is not affiliated with the Matrix.org Foundation, with Element, or with Apple Inc.