Open Source Libraries

Growl (BSD License)
Copyright (c) The Growl Project, 2004
Sparkle (License)
Copyright (c) 2006-2013 Andy Matuschak
Copyright (c) 2009-2013 Elgato Systems GmbH
Copyright (c) 2011-2014 Kornel Lesiński
Copyright (c) 2014 C.W. Betts
Copyright (c) 2014 Petroules Corporation
Copyright (c) 2014 Big Nerd Ranch
EMKeychain (MIT License)
Copyright (c) 2007 Extendmac, LLC
SSSelectableToolbar (MIT License)
Copyright (c) 2011 Steve Streeting
SCEvents (MIT License)
Copyright (c) 2009 Stuart Connolly
MGScopeBar (Instinctive Code Source Code License)
Originally authored by Matt Gemmell
CocoaREST (New BSD License)
Copyright (c) 2009, Steven Degutis
YAJLDecoder (MIT License)
Copyright (c) 2009 Gabriel Handford
YAJL (BSD License)
Copyright 2007-2009, Lloyd Hilaiel
ShortcutRecorder (BSD License)
Copyright (c) 2006, contributors to ShortcutRecorder
ITProgressBar (BSD License)
Copyright (c) 2014, Ilija Tovilo
HyperlinkTextField (MIT License)
Copyright (c) 2012 Toomas Vahter
INAppStoreWindow (BSD License)
Copyright 2011-2014 Indragie Karunaratne
GTMSessionFetcher (Apache License)
Copyright 2014 Google Inc.
CocoaLumberjack (BSD License)
Copyright 2010-2015, Deusty, LLC
LetsMove (Public Domain)
Copyright 2009-2015, Potion Factory
JFBCrypt (Apache 2.0 License)
Copyright (c) 2011 Jason Fuerstenberg
PEG Markdown Highlight (MIT and GPL2+ Licenses)
Copyright 2011-2016 Ali Rantakari
RNCryptor-objc (MIT License)
Copyright (c) 2012 Rob Napier
Progressive Rollout via Sparkle (Apache 2.0 License)
Copyright @ 2016 Atlassian Pty Ltd

Open Source Binaries

Mercurial (GPL 2)
Modified version with full source is included
hgsubversion (GPL 2)
Modified version with full source is included
Git (GPL 2)
Unmodified binaries are included with SourceTree,
source code is available
git-flow (BSD License)
forked, full source available
hg-flow (GPL 2)
full source included
Git LFS (MIT License)
Unmodified binaries are included with SourceTree,
source code is available