based on graphs. With KnotsBag you can design knotwork (or other drawings) very easily and very quickly by just clicking on points. You just have to create a graph. For that you create points with the mouse and you link the points with one of the four different links available. KnotsBag makes the knot from the graph. You can adjust the colours, widths, etc. before exporting in . that can be scaled and printed at any resolution, without losing detail or clarity. You also can get instant visual feedback on what you changed. Sketsa features various tools for optimizing content creation, giving designers… features (markers, clones, alpha blending, etc.) and great care is taken in designing a streamlined interface. It is very easy to edit nodes, perform complex path operations, trace bitmaps and much more. We also aim to… features (markers, clones, alpha blending, etc.) and great care is taken in designing a streamlined interface. It is very easy to edit nodes, perform complex path operations, trace bitmaps and much more. We also aim to… that can be scaled and printed at any resolution, without losing detail or clarity. You also can get instant visual feedback on what you changed. Sketsa features various tools for optimizing content creation, giving designers… Annotation Tools and Effects. Capture anything on your PC Screen, even clean image of Aero Glass windows with border transparency and shadow. Annotate your screenshots with high-fidelity tools. Crop captured images, rotate, add reflections, shadows, 3D perspective and magnifier lens effects. Generate output image to any picture size in high-quality, automatically… Inkscape is an open source drawing tool with capabilities similar to Illustrator, Freehand, and CorelDraw that uses the W3C standard scalable features include basic shapes, paths, text, markers, clones, alpha blending, transforms, gradients, and grouping. In addition, Inkscape supports Creative Commons meta-data, node-editing, layers, complex path operations, text-on-path, and editor for designing greeting card logos using various closed shapes based on conic sections and spirographs. Written in Java and rendered using Bezier curves. The editor supports multiple configurable objects superimposed on each other, usually with a radial symmetry, to produce intricate and interesting designs. It uses standard shapes like hyperbolas, ellipses, polygons, cardioids, centered trochoids and vaguely… editor. It is useful for making flowcharts, line drawings, org charts, buttons, etc. It is an object-oriented drawing and design program. It has intelligent linking system. You can link two objects with easy operation, and the linking system keep the layout balance of the objects even if you move the object. It can export the ActiveX for 2D and 3D visualisation and animation. You can use it for CAD,GIS and others. The EWDraw is based on Open CASCADE geometric kernel v 5.2 and openGL. The library is realized as a run-time Windows 32 bit OCX (ActiveX control). Either can be used with applications written in the popular Visual IDE languages such as Visual Basic, Delphi, C++ Builder , Visual C++, .NET and INTERNET EWDRAW… , illustrations, leaflets, price lists, greeting cards, postcards, maps, building plans, business cards, letterheads, and more. Main features: tools for creating curves, rectangles, ellipses, polygons, stars, tables, barcodes, and text, bitmap import, fully editable object styles – pen, fill, shadow, and transparency. applications under Borland Delphi. FlexGraphics library can be used for creation of plots, drawings, electrical, concept and mnemonic charts as well as for creation of interactive plans with high level of detail for various facilities, buildings or their parts. FlexGraphics library can also be used for visualization of information being received from various sensors in real… engine! Customize everything about your ship from mass to rate of fire. Use physics to create powerful ships. Massive ships take more hits, less massive ones take less engine power. Big projecties connect easily but small projectiles have more pressure ripping through baddies with less velocity! It’s up to you to figure out what combination… editor designed as a standard property page. Can be used for creating simple animations, SCADA systems,networking,technical drawings and diagrams. VectorControl Control supports most popular development platforms including VB, VC++,Delphi,C++Builder etc. Source.