The source code is Apache licensed. The official binaries are licensed for personal use for free. You pay to use official builds for commercial purposes, but th

The source code is Apache licensed. The official binaries are licensed for personal use for free. You pay to use official builds for commercial purposes, but the restrictions on the personal-use binaries are still quite liberal. If you have doubts, just ask us or build from source. It is, after all, open source.