Add Dash for macOS and 3v4l.org

README.md

@@ -123,3 +123,4 @@ Desktop Tool | Description
 [Mailspring](https://getmailspring.com/) | Powerful n' fancy cross-plataform mail client.
 [Carbonize](https://www.dangercove.com/carbonize) | Generate gorgeous, highly customizable images from your code snippets. Ready to save or share. (macOS client for Carbon)
 [ASCIinema](https://asciinema.org/) | Record and share your terminal sessions, the right way. 
+[Dash](https://kapeli.com/dash) | API Documentation, Cheat sheets, Snippet manager with instant search everything for macOS

code-playgrounds.md

@@ -19,3 +19,4 @@ Code Playground | Description
 [PHPFiddle](http://phpfiddle.org/) | PhpFiddle provides Web IDE, Web Tools, APIs, Widgets, PHP Libraries, programming resources and execution environment for PHP/MySQL and HTML/CSS/JavaScript online coding. PhpFiddle allows people to test PHP code snippets, create, test and download simple applications. **Features: (examples, download the codes)**
 [Plunker](https://plnkr.co/) | Plunker is an online community for creating, collaborating on and sharing your web development ideas. Design goals for speed, ease of use and collaboration. **Features: (examples, auto reload, save code, real-time collaboration, customizable syntax editor, code linting, open-source)**
 [Repl.it](https://repl.it/) | Repl.it is a web-based application that offers instant programming environment for your favourite language. **Features: (linting, debugger, files and live updates, hosting and Deployment)**
+[3v4l.org](https://3v4l.org/) | 3v4l.org (leetspeak for eval) is a online PHP shell which allows you run code on more than 250 PHP versions, and compare performance, output and support of features. **Features: (linting, debugger, sharing)**