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 - [Postman](https://www.getpostman.com) - Postman, allows a user to develop and test APIs quickly.
 - [![Open-Source Software][OSS Icon]](https://github.com/rabbitvcs/rabbitvcs) [Rabbit VCS](http://rabbitvcs.org/) - RabbitVCS is a set of graphical tools written to provide simple and straightforward access to the version control systems you use.
 - ![Nonfree][Money Icon] [SmartGit](https://www.syntevo.com/smartgit/) - SmartGit is a Git client with support for GitHub Pull Requests+Comments and SVN.
+- [![Open-Source Software][OSS Icon]](https://github.com/CoatiSoftware/Sourcetrail) [Sourcetrail](https://www.sourcetrail.com/) - Sourcetrail is a free and open-source cross-platform source explorer that helps you get productive on unfamiliar source code.
 - ![Non Free][Money Icon] [StarUML](http://staruml.io/) - A sophisticated software modeler.
 - [![Open-Source Software][OSS Icon]](https://github.com/uncrustify/uncrustify) [Uncrustify](http://uncrustify.sourceforge.net/) - Source Code Beautifier for C/C++, C#, ObjectiveC, D, Java, Pawn and VALA. See UniversalIndentGUI below.
 - [![Open-Source Software][OSS Icon]](https://sourceforge.net/projects/universalindent/files/uigui/) [UniversalIndentGUI](http://universalindent.sourceforge.net/) - UniversalIndentGUI offers a live preview for setting the parameters of nearly any indenter.