Open source software is software with source code that anyone can inspect, modify, and enhance.
"Source code" is the part of software that most computer users don't ever see; it's the code computer programmers can manipulate to change how a piece of software—a "program" or "application"—works. Programmers who have access to a computer program's source code can improve that program by adding features to it or fixing parts that don't always work correctly.
Adobe Dreamweaver is a premium web design / development application that combines a visual panel with a code editor that features syntax highlighting, code completion, and code collapsing as well as real–time syntax checking and code introspection for generating code hints.
Notepad++ an open-source code editor and Notepad replacement that supports several languages. Running in the MS Windows environment, its use is governed by GPL License. Based on the powerful editing component Scintilla, Notepad++ is written in C++ and uses pure Win32 API and STL which ensures a higher execution speed and smaller program size.
Basscssis an atomic class based open-source lightweight CSS library of immutable utilities designed for speed, clarity, performance, and scalability. It also has a fully featured version Basscss / Ace
PHP is an open-source server-side scripting language designed for web development but also used as a general-purpose programming language. As of January 2013, PHP was installed on more than 240 million websites (39% of those sampled) and 2.1 million web servers.
MySQL is an open-source relational database management system (RDBMS) The SQL acronym stands for Structured Query Language. In July 2013, it was the world's second most widely used RDBMS, and the most widely used open-source client–server model RDBMS.
Content Management Systems
WordPress is an open-source content management system (CMS) based on PHP and MySQL. It is used by more than 23.3% of the top 10 million websites as of January 2015. It is the most popular blogging system in use on the Web, at more than 60 million websites.
Google Fonts (previously called Google Web Fonts) is an interactive directory of free hosted application programming interfaces for web fonts. Many of the fonts are released under free software licenses. Google Fonts is designed to provide a platform for users to discover fonts and is used extensively.
Font Awesome is a font and icon toolkit based on CSS and LESS. It was made by Dave Gandy for use with the Twitter Bootstrap, and later was incorporated into the BootstrapCDN. Font Awesome has a 20% market share amongst those websites, which use third-party Font Scripts on their platform, ranking it on a second place after Google Fonts.
Content Delivery Networks
Content Delivery Networks are a large distributed system of proxy servers deployed in multiple data centers across the Internet. The goal of a CDN is to serve content to end-users with high availability and high performance. CDNs serve a large fraction of the Internet content today.