| Geolocater | | - | | |
| HTML5Toggle - Toggle HTML5 support on or off | | - | | |
| Hide Preferences | | - | | |
| IME and DiMENSiON | | - | | |
| IME-Colors | | - | | |
| IMEStatus | | - | | |
| Imitate IE | | - | | |
| InfoLister | | - | | |
| Integrated Authentication for Firefox | | - | | |
| Is It Compatible? | | - | | |
| JS Switch | | - | | |
| JSActions K | | - | | |
| JSOff | | - | | |
| JavaScript Actions Menu | | - | | |
| Just Disable Stuff | | - | | |
| Just Restart! | | - | | |
| KillSpinners | | - | | |
| Language Manager | | - | | |
| Language Switch | | - | | |
| Lightweight Themes Manager | | - | | |
| LimitedSurf | | - | | |
| Link And Forminfo | | - | | |
| Links and Forms | | - | | |
| LiteRider7 | | - | | |
| Load from Cache | | - | | |
| Massive Extender | | - | | |
| Memory Restart | | - | | |
| Mid-Click Restart | | - | | |
| Minimize On Start and Close | | - | | |
| MinimizeToTray Plus | | - | | |
| MinimizeToTray revived (MinTrayR) | | - | | |
| More In Content UI + | | - | | |
| Mozilla Labs： Prospector - Home Dash | | - | | |
| Mozilla Labs： Prospector - Search Tabs | | - | | |
| Multi-Search | | - | | |
| Multiple Addon Deactivator | | - | | |
| New Plugin Disabler | | - | | |
| New Private Window | | - | | |
| New Tab JumpStart | | - | | |
| New Tab King | | - | | |
| No Color | | - | | |
| No More Install Delay | | - | | |
| No XPI Install Delay | | - | | |
| NoContentDownloadLastDir | | - | | |
| NoWay | | - | | |
| Old Addon Manager | | - | | |
| Online Reload | | - | | |
| Only Minor Update | | - | | |
| Open in Private Window | | - | | |
| Open sync tabs button | | - | | |
