Cheese - Cheese uses your webcam to take photos and videos, applies fancy special effects and lets you share...
Element.io - Secure messaging app with strong end-to-end encryption, advanced group chat privacy settings, secure video calls for teams, encrypted communication using Matrix open network. Riot.im is now Element.
MyCam - Record videos and take pictures with your webcam, open image or video files and apply with amazing photo filters and video effects.
ChatSecure - ChatSecure is a free and open source messaging app that features OTR encryption over XMPP.
Kamoso - Kamoso is a webcam recorder from KDE community.
Otr.to - A secure peer-to-peer chat in your web browser.