Blackmagic Design Fusion is described as 'Fusion is the world’s most advanced compositing software for visual effects artists, broadcast and motion graphic designers and 3D animators' and is a popular VFX software in the video & movies category. There are more than 10 alternatives to Blackmagic Design Fusion for a variety of platforms, including Windows, Mac, Linux, iPad and Android apps. The best Blackmagic Design Fusion alternative is Natron, which is both free and Open Source. Other great apps like Blackmagic Design Fusion are Adobe Premiere Pro, Adobe After Effects, Friction and NUKE.
BMD Fusion and Premiere both have timeline for non-linear editing, but purposes of this two software too different. Fusion can't be used as full-featured Non-Linear editing software, and visa versa. Blackmagic have another software for non-linear editing Da Vinci Resolve, and Premier closer to it.