The following open source projects are used in APG:

  * ZXing QRCode Integration
    http://code.google.com/p/zxing/
    Apache License v2

  * SpongyCastle
    https://github.com/rtyley/spongycastle
    MIT X11 License

Images:

  * icon.svg
    modified version of GnuPG Logo (not)
    http://openclipart.org/detail/15078/gnupg-logo-(not)-by-mrbordello
    Public Domain