diff --git a/README.md b/README.md
index a41ac84..4673b2c 100644
--- a/README.md
+++ b/README.md
@@ -312,6 +312,7 @@ Before add pull request please see **[this](https://github.com/trimstray/the-boo
:small_orange_diamond: Network-Tools - network tools for webmasters, IT technicians & geeks.
:small_orange_diamond: URL Encode/Decode - tool from above to either encode or decode a string of text.
:small_orange_diamond: Uncoder - the online translator for search queries on log data.
+ :small_orange_diamond: Regex101 - online regex tester and debugger: PHP, PCRE, Python, Golang and JavaScript.
:small_orange_diamond: RegExr - online tool to learn, build, & test Regular Expressions (RegEx / RegExp).
:small_orange_diamond: Hardenize - deploy the security standards.
:small_orange_diamond: VirusTotal - analyze suspicious files and URLs to detect types of malware.
@@ -323,6 +324,7 @@ Before add pull request please see **[this](https://github.com/trimstray/the-boo
:small_orange_diamond: ShellCheck - finds bugs in your shell scripts.
:small_orange_diamond: explainshell - get interactive help texts for shell commands.
:small_orange_diamond: jsbin - live pastebin for HTML, CSS & JavaScript and more.
+ :small_orange_diamond: CodePen - is a social development environment for front-end designers and developers.
:small_orange_diamond: PHP Sandbox - test your PHP code with this code tester.
:small_orange_diamond: Repl.it - an instant IDE to learn, build, collaborate, and host all in one place.