Over the course of your computer usage, data accumulates and sometimes it is spread out over different parts of your hard disk. Consequently your computer has to search for different places on the disk to access data. This is called disk fragmentation and considerably slows down your computer’s overall performance.On regular hard disks, regular disk defragmentation is highly advised. This process rearranges data and makes it easier for the computer to find what it is looking for. Windows Vista and 7 have built-in defragmentation features but for somebody new to the process, Smart Defrag is the best tool.

We have lots of commercial software available to use on different platform to complete our different work, but they are not free and sometime we do not able to purchase. Don't worry about it, today we are listing here 11 Free And Useful Open-Source Alternatives For Designers in which most of them are cross-platform. There are many alternative available for single software, but I just tried to list down some very similar and useful alternative. You might not be able to enjoy all the features as original software but it will really help you to perform your task in a better way when your pocket does not allow you to purchase commercial software.BlenderAlternative: Autodesk 3ds MaxBlender is the free open source 3D content creation suite, available for all major operating systems. It includes tools for modeling - fast subdivision surface and polygon tools, multi-resolution mesh sculpting, metaballs, NURBS, vector fonts, and curves; uv mapping; shaders and texturing - both paint based and node based; ik and fk animation tools with rigging, constraints, skinning, morph targets, drivers, deformers, and modifiers; simulation tools including hard bodies, soft body, cloth, and fluids; and particle systems including hair. Blender has integrated rendering with both its native renderer and the raytracer Yafray as well supporting many external renderers; and python based scripting.