FreeCAD - An open-source parametric 3D modeler
Img.vision - Image hosting & video hosting for eCommerce sellers
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
UploadHouse - Thumbnail and resize your photos and images
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ImageVenue - ImageVenue is a great online hosting service that allows uploading pictures for showing creative works with a simple-to-use technique.