App: LightCraft
Developer: Unbound Software, LLC (U.S.)
Genres: Foto und Video, Grafik und Design

LightCraft creates simulated long-exposure photos by blending the brightest pixels of each video frame into a single image, or averaging frames. You may use the entire video, or select a custom range.

Naturally, the quality of the result will depend on the source video - stable (non-shaky) videos with high frame rates will produce the best results. 

LightCraft is particularly well-suited for smoothing clouds and water, as well as light trails at night.

Release notes:
Added motion blur mode to average frames for smoother results.