Discontinued Mozilla plug-ins

web browser toolbar for Internet Explorer by Google

Google software

QuteCom (previously called WengoPhone) was a free-software SIP-compliant VoIP client developed by the QuteCom (previously OpenWengo) community under the GPL-2.0-or-later license. It allows users to speak to other users of SIP-compliant VoIP software at no cost. It also allows users to call landlines and cell phones, send SMS and make video calls. None of these functions are tied to a particular provider, allowing users to choose among any SIP provider.

former browser extension used by Alexa Internet for tracking Internet traffic

web browser extension