Adobe Premiere Elements is a video editing app published by Adobe Systems. It is a scaled-down version of the Adobe Premiere Pro and is tailored to novice editors and consumers. The entry screen offers clip organization, editing and auto-movie generation options. Premiere Pro project files are not compatible with Premiere Elements projects files. While marketed separately, it is frequently bundled for added value with Adobe Photoshop Elements. In 2006, it was identified as the number one selling consumer video editing software. Its main competitors are Final Cut Express, AVS Video Editor, PowerDirector, Pinnacle Studio, Sony Vegas Movie Studio, Sony Vegas, Corel VideoStudio, and iMovie. Unlike many of its competitors, Premiere Elements can handle unlimited video and audio tracks, with multiple keyframed effects applied to each clip, as well as Picture-in-picture and chromakey (with green or blue screen) capabilities. It also supports many third-party plug-ins for additional features, including Premiere Pro plug-ins, After Effects plug-ins, and VST effects. It can create bars and tone and a countdown leader, just like Premiere Pro. This program also features real-time video rendering which allows the user to instantly preview edits made to the video timeline. Premiere Elements is available for Windows XP and also for Windows Vista, Windows 7 beginning with version 3.0.2 and Windows 8. Beginning with version 9.0, Premiere Elements was made available for Mac OS X.