An open-source cross-platform web browser developed by Mozilla. After years of development in 2004, it appeared as Firefox 1.0 making a massive success. In one year Firefox was downloaded 100+ million times. The main element of the logo is the fox-like element surrounding a circle. The logo alone makes a perfect first impression with its unique color gradient of orange, red, yellow, and purple. Firefox had few variations of its logo before the current version.