diff --git a/README.md b/README.md
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@@ -47,6 +47,7 @@ A collection of awesome penetration testing resources, tools, books, confs, maga
 * [PTES](http://www.pentest-standard.org/) - Penetration Testing Execution Standard
 * [OWASP](https://www.owasp.org/index.php/Main_Page) - Open Web Application Security Project 
 * [OSSTMM](http://www.isecom.org/research/osstmm.html) - Open Source Security Testing Methodology Manual
+* [PCI SSC](https://www.pcisecuritystandards.org/security_standards/) - Standards and supporting materials to enhance payment card data security
 
 #### Shell Scripting Resources
 * [LSST](http://www.freeos.com/guides/lsst/) - Linux Shell Scripting Tutorial
@@ -126,6 +127,7 @@ A collection of awesome penetration testing resources, tools, books, confs, maga
 * [IDA Free](https://www.hex-rays.com/products/ida/support/download_freeware.shtml) - The freeware version of IDA v5.0
 * [WDK/WinDbg](http://msdn.microsoft.com/en-us/windows/hardware/hh852365.aspx) - Windows Driver Kit and WinDbg
 * [OllyDbg](http://www.ollydbg.de/) - An x86 debugger that emphasizes binary code analysis
+* [Radare2](http://rada.re/r/index.html) - Opensource, crossplatform reverse engineering framework.
 
 
 ### Books