Useful tools and website for developers

Wappalyzer.com - Wappalyzer is a cross-platform utility that uncovers the technologies used on websites.

hotjar.com  - Heatmaps, Visitor Recordings

smartlook.com - Smartlook Visitor Screen Recording

Firebug -  Tools for web development. Allows inspect, edit and monitor CSS, HTML, JavaScript and Net requests in any web page

Bootstrap - A front-end framework for building responsive websites

jsfiddle - Jsfiddle.net is an amazing place for writing and sharing code

Heroku - Heroku is a platform as a service (PaaS) that enables developers to build, run, and operate applications entirely in the cloud

GitHub -Online project hosting using Git. Includes source-code browser, in-line editing, wikis, and ticketing. Free for public open-source code

Bitbucket - Collaborate on code with inline comments and pull requests. Manage and share your Git repositories to build and ship software, as a team

JSONView - JSON is validated using a client-side javascript

Postman- Build, test, and document your APIs faster.

Fiddler - Fiddler is an HTTP debugging proxy server application

W3c Markup Validation Service - W3C's easy-to-use markup validation service, based on SGML and XML parsers.

newrelic- Offers a performance management solution enabling developers to diagnose and fix application performance problems in real time.