Learn more: What is it? What can you do with it? What does it do? What do I need to run it? Create your own local brat installation: Download v1.3 Manage your own annotation effort Easy to set up: installation instructions Instructions for upgrading to v1.3 (Crunchy Frog) Open source (MIT License) Current version: v1.3 Crunchy Frog (2012-11-08).