Kdenlive
Open Source
Kdenlive is an open-source video editing software based on the MLT Framework and KDE.
WebcamMax
Freemium
WebcamMax allows you to add all sorts of special effects and images to webcam images to make your broadcasts and webcam sessions more fun.
Camtasia Studio
Commercial
Camtasia Studio and Camtasia for Mac are software suites, created and published by TechSmith, for creating video tutorials and presentations directly.
Compare ManyCam with alternatives
Compare Camtasia Studio and ManyCam and decide which is most suitable for you.