List of free and recommended Mozilla WebExtensions#Website development tools

! rowspan="2" | Browser extension

! rowspan="2" | Free license

! colspan="2" | Dependencies

! rowspan="2" | WebExt

! rowspan="2" | Rec.

! rowspan="2" | Category

! rowspan="2" | Description

| {{yes|MIT}}

| {{yes|No}}

| {{yes|No}}

| {{yes}}

| {{yes}}

| Privacy and security

|

| {{yes|MPL-2.0}}

| {{yes|No}}

| {{yes|No}}

| {{yes}}

| {{yes}}

| Content delivery network (CDN) emulation

|

| {{yes|GPL-2.0}}

| {{yes|No}}

| {{yes|No}}

| {{yes}}

| {{yes}}

| Download manager

| A download manager and accelerator.

| {{yes|GPL-2.0}}

| {{yes|No}}

| {{yes|No}}

| {{yes}}

| {{yes}}

| Privacy and security

| Proxy management tool

| {{yes|GPL-2.0-or-later}}

| {{yes|No}}

| {{yes|No}}

| {{yes}}

| {{yes}}

| Transport Layer Security (TLS)

| HTTP Secure whenever possible.

| {{yes|GPL-2.0}}

| {{yes|No}}

| {{yes|No}}

| {{yes}}

| {{yes}}

| Privacy and security

| JavaScript and other potentially executable content.

| {{yes|GPL-3.0}}

| {{yes|No}}

| {{yes|No}}

| {{yes}}

| {{yes}}

| Adblocker

| Do Not Track setting in a user's web browser.

| {{yes|GPL-3.0}}

| {{yes|No}}

| {{yes|No}}

| {{yes}}

| {{yes}}

| Accessibility

| A Text to Speech Voice Reader

| {{yes|GPL-3.0}}

| {{yes|No}}

| {{yes|No}}

| {{yes}}

| {{yes}}

| CSS

| Customization

| {{yes|GPL-2.0}}

| {{yes|No}}

| {{yes|No}}

| {{yes}}

| {{yes}}

| Customization

| Obscure or mask content other than a running video.

| {{yes|GPL-3.0}}

| {{yes|No}}

| {{yes|No}}

| {{yes}}

| {{yes}}

| Wide-spectrum content blocker

| Blocking ads and filtering content via a paired blacklist and whitelist.

| {{yes|GPL-2.0}}

| {{yes|No}}

| {{yes|No}}

| {{yes}}

| {{yes}}

| Accessibility

| computer vision syndrome (CVS)

! Browser extension

! Firefox

! Firefox for Android

| {{yes}}

| {{yes}}

| {{yes}}

| {{yes}}

| {{yes}}

| {{no}}

| {{yes}}

| {{yes}}

| {{yes}}

| {{yes}}

| {{yes}}

| {{yes}}

| {{yes}}

| {{yes}}

| {{yes}}

| {{yes}}

| {{yes}}

| {{no}}

| {{yes}}

| {{yes}}

| {{yes}}

| {{yes}}

| {{yes}}

| {{no}}

! rowspan="2" | Browser extension

! rowspan="2" | Free license

! colspan="2" | Dependencies

! rowspan="2" | WebExt

! rowspan="2" | Rec.

! rowspan="2" | Category

! rowspan="2" | Description

| {{yes|MPL-2.0}}

| {{yes|No}}

| {{yes|No}}

| {{yes}}

| {{yes}}

|

|