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Shotcut is a free, open source, cross-platform video editor for Windows, Mac and Linux. Major features include support for a wide range of formats; no import required meaning native timeline editing; Blackmagic Design support for input and preview monitoring; and resolution support to 4k. Trimming on source clip player or timeline with ripple option. Easy-to-use cut, copy, and paste operations. Append, insert, overwrite, lift, and ripple delete editing on the timeline. 3-point editing. Hide, mute, and lock track controls. Multitrack timeline with thumbnails and waveforms. Unlimited undo and redo for playlist edits including a history view. Create, play, edit, save, load, encode, and stream MLT XML projects (with auto-save).

FreeCAD is a very useful 3D CAD modeler. FreeCAD will be a general purpose 3D CAD modeler. The development is completely Open Source (GPL & LGPL License). FreeCAD is aimed directly at mechanical engineering and product design but also fits in a wider range of uses around engineering, such as architecture or other engineering specialties. FreeCAD features tools similar to Catia, SolidWorks or Solid Edge, and therefore also falls into the category of MCAD, PLM, CAx and CAE.