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.
Blender
Alternative: 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.
ShowDocument is a free service for online meetings with fully synchronized co-browsing of any document. It is a quick and simple way to share a document with other people at the same time. It is a web collaboration platform that lets individuals have a free online meeting. It is an alternative to various commercial desktop sharing applications. One can easily upload any file and during the session mark it up with a pen or a highlighter tool in addition to a text box tool and eraser.
Twitterfeed is a free service that will automatically tweet any post directly via your rss feed on twitter that you publish on your blog.
Free survey software for online surveys, web surveys, email surveys. Free Online survey software for customer satisfaction surveys, employee satisfaction surveys, market research surveys.
CurdBee is a safe and secure web-based billing application. You can use it to send clients invoices and then collect payments via PayPal or Google Checkout, billing them easily in the currency you choose. It’s so simple, you won’t believe it till you see it.
Cozi is a free web service that helps families manage crazy schedules, track shopping and to-do lists, organize household chores, stay in communication and share memories—all in one place.
One of the beautiful theme by designed by Paul Kadysz and developed by Dariusz Siedlecki. When you see the them, I sure you will love it.