Browsers

LibreWolf
LibreWolf(Free)
Download
A free program for Mac, by LibreWolf.
Vivaldi
Vivaldi Technologies(Free)
Download
Vivaldi for Mac is a new, feature rich web browser that combines an Opera-like interface with a Chromium open-source platform. Vivaldi for Mac is very similar to the Opera browser in many ways.
Firefox ESR
Mozilla(Free)
Download
Firefox ESR - Stable Web Browsing
Google Hangouts Chrome Extension
google(Free)
Download
Social networking communications platform
G App Launcher
Carlos Jeurissen(Free)
Download
Streamline Your Workflow with G App Launcher for Mac
SafariStand
Hetima(Free)
Download
Hetima - A Safari Plugin For the Mac
Sunrise
Sunrisebrowser(Free)
Download
Open source developer browser based on WebKit
Adblock Plus Pop-up Addon
Michael Mateas and Andrew Stern(Free)
Download
Adblock Plus Pop-up Addon: Extend Adblock Plus to Block Pop-ups
Ghostery
Ghostery(Free)
Download
Prevent sites from tracking you on the net
FireBug
Joehewitt(Free)
Download
FireBug: Web Debugging Made Easy in Firefox