just to compare a web browser engine to a full operating system:
```
$ git clone --branch=release/14.3.0-p4 --depth=1 --quiet https://git.FreeBSD.org/src.git FreeBSD-src
$ du -sh FreeBSD-src
1.9G FreeBSD-src
$
```
#WebKit has nearly 4 times the source repository size compared to #FreeBSD.