These are top 5 must have addons for Firefox that a web-developer needs.

Top 5 Firefox Extensions for Web Developers - 92Top 5 Firefox Extensions for Web Developers - 69Top 5 Firefox Extensions for Web Developers - 75Top 5 Firefox Extensions for Web Developers - 84Top 5 Firefox Extensions for Web Developers - 97Top 5 Firefox Extensions for Web Developers - 65Top 5 Firefox Extensions for Web Developers - 75Top 5 Firefox Extensions for Web Developers - 47Top 5 Firefox Extensions for Web Developers - 77Top 5 Firefox Extensions for Web Developers - 71