We gratefully acknowledge the following code used in QCart:

• PSMTabBarControl by Positive Spin Media

• Sparkle by Andy Matuschak

• SSCrypto by Septicus Software

• UKCrashReporter by Uli Kusterer

• feedbackreporter by Torsten Curdt UKCrashReporter by Uli Kusterer

               Copyright 2008-2011, Torsten Curdt
               
               Licensed under the Apache License, Version 2.0 (the "License");
               you may not use this file except in compliance with the License.
               You may obtain a copy of the License at
               
               http://www.apache.org/licenses/LICENSE-2.0
               
               Unless required by applicable law or agreed to in writing, software
               distributed under the License is distributed on an "AS IS" BASIS,
               WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
               See the License for the specific language governing permissions and
               limitations under the License.
             

• Portions of the TwUI framework by Twitter

  Copyright 2011 Twitter, Inc.
            
  Licensed under the Apache License, Version 2.0 (the "License"); you may not use this work except in compliance with the License. You may obtain a copy of the License in the LICENSE file, or at:
            
  http://www.apache.org/licenses/LICENSE-2.0
            
  Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.