Find the online version of this document here: https://fiddler2.com/r/?credits

Fiddler depends on the work of a number of other companies and individuals:

Some of Fiddler's icons were generously provided by the FatCow.com free icon set, licensed under Creative Commons. http://www.fatcow.com/free-icons
Fiddler is installed using the excellent freeware NSIS Installer. http://nsis.sourceforge.net/Main_Page 
Fiddler's HexView inspector uses an early fork of what is now the HexEditor control http://sourceforge.net/projects/hexbox/ Copyright (c) 2011 Bernhard Elbl - Licensed under the MIT License. http://www.opensource.org/licenses/mit-license.php
Fiddler's JSON parsing support is based on a sample Copyright (c)2008 Patrick van Bergen - Licensed under the MIT License.
Fiddler's JavaScript formatting code is based on a sample ©2012 Jonathan Wood - Licensed under the Microsoft Public License. http://www.microsoft.com/opensource/licenses.mspx
Fiddler uses the commercial Xceed Libraries for compressing SAZ files and compressing/decompressing web traffic. http://xceed.com/
The Quantum Whale Editor.NET component is used for the SyntaxView Inspector and FiddlerScript Editors.  http://www.qwhale.net/products/editor.htm

dwebp.exe is Copyright (c)2010, Google Inc. and supplied under the following license:
    Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
        -Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
        -Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
        -Neither the name of Google nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

        THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
        FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 
        BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
        LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

zopfli.exe is Copyright (c)2011, Google Inc. and supplied under the Apache License: http://www.apache.org/licenses/LICENSE-2.0