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With
Firefox version 57
, named Firefox quantum ,
plugins also known as extensions or add-ons , created using the
and
technologies ,
have stopped working .
Firefox versions before 57
, had a lot of plugins , which are still useful today .
This tutorial , will show how to install a version of Firefox , with which , the old plugins still work ,
and it will detail , the most useful plugins .
One
way of installing a version of Firefox with which old plugins
work , is to download , and install , a version of Firefox prior to
57
.
Old versions of Firefox , can be gotten from this
link .
It is not advisable to use an old version of Firefox , because of security issues . An alternative way , which can be used along the newest version of Firefox , is to download , and install , waterfox classic or palemoon .
Once a version of Firefox less than
57
, or a Firefox alternative , has been downloaded and installed , and to be
able to install classic extensions , the
extension Classic Add-ons Archive must be installed .
This extension can be downloaded from
GitHub
.
For the
Classic Add-ons Archive
plugin ,
to be successfully installed , unsigned extension installation must be allowed .
This can be done by visiting
the about:config
page in Firefox , or one of its
alternative , and
toggling the
xpinstall.signatures.required
setting
to false .
Also , the multi-process mode must be disabled .
This can be done by visiting the about:config
page in Firefox , or one of its alternative ,
and setting any browser.tabs.remote.autostart
to false .
caa:addon/autocopy-2
AutoCopy 2
,
which allows the automatic copying of selected text .
caa:addon/copy-plain-text-2
caa:addon/firepreview
caa:addon/google-search-link-fix
caa:addon/regex-find
caa:addon/screengrab-fix-version
caa:addon/spellcheckeverything
caa:addon/status-4-evar
caa:addon/tab-mix-plus
caa:addon/text-link
caa:addon/downthemall
caa:addon/fireftp
caa:addon/flagfox
caa:addon/headercontrolrevived
caa:addon/live-http-headers
caa:addon/ublock-origin
caa:addon/privacy-badger17
caa:addon/auto-reload
caa:addon/clear-site-cache
caa:addon/colorzilla
caa:addon/csssir
caa:addon/css-reloader
caa:addon/custom-style-script
caa:addon/font-finder
caa:addon/headingsmap
caa:addon/htmleditor
caa:addon/html-validator
caa:addon/reload-skip-cache-button
caa:addon/wappalyzer
caa:addon/web-developer