Wide range of Firefox extensions or add-ons are what web developers like. Especially in SEO field, for Mobile design or daily general tasks. Sooth to say, I use mainly online SEO Tools (just to compare results ;), but at the same time I like to use handy Firefox Add-ons built in. After launching FF2 they become hardworking tools for any webmaster, including SEO Freelancer. Below are list of extensions which many people found useful.
For non-SEO related work check Top 15 Firefox Extensions by PCMag.
Who loves Firefox can advance it.
Content Marketing is owning, as opposed to renting media. It’s a marketing process to attract and retain customers by consistently creating and curating content in order to change or enhance a consumer behavior.