http://www.autodesk.com/Autodesk, Inc. is an American multinational software corporation that makes software for the architecture, engineering, construction, manufacturing, media, and entertainment industries.
I got into Autodesk by way of one of my engineering classes, and I figured I'd spread the word around and see what other programs they use. I personally use Inventor and AutoCAD, and I'm trying to learn Maya.
http://www.autodesk.com/products/inventor/overviewAutodesk Inventor, developed by U.S.-based software company Autodesk, is 3D mechanical CAD design software for creating 3D digital prototypes used in the design, visualization and simulation of products.

Inventor is probably my favorite Autodesk product. It's like AutoCAD but newer, shinier, and way better (and easier) to use. It's just a whole lot of fun to go off and design fantastical machines that I would probably never see put into production, and considering that I own the free student version, I wouldn't be able to make a profit anyway.
http://www.autodesk.com/products/autocad/overviewAutoCAD is a commercial software application for 2D and 3D computer-aided design (CAD) and drafting — available since 1982 as a desktop application and since 2010 as a mobile web- and cloud-based app marketed as AutoCAD 360.

AutoCAD was the first Autodesk program I learned to use, before Inventor. It was (IIRC) the first Autodesk program ever published and it's an oldie. It's like old man's inventor, but architects seem to use it a lot so I wouldn't totally leave it out. I've made some stuff with it, like this logo:

http://www.autodesk.com/products/maya/overviewAutodesk Maya /ˈmɑːjə/, commonly shortened to Maya, is a 3D computer graphics software that runs on Windows, OS X and Linux, originally developed by Alias Systems Corporation (formerly Alias|Wavefront) and currently owned and developed by Autodesk, Inc. It is used to create interactive 3D applications, including video games, animated film, TV series, or visual effects. The product is named after the Sanskrit word Maya (माया māyā), the Hindu concept of illusion.

I'm terrible at it, but Maya is a program for animating stuff. I can't even get a walking animation working yet, so I've got some work to do. It's pretty intuitive like the rest of Autodesk's products. It's an incredible company that makes lots of very good programs.
http://www.autodesk.com/products/3ds-max/overviewAutodesk 3ds Max, formerly 3D Studio Max, is a professional 3D computer graphics program for making 3D animations, models, games and images. It was developed and produced by Autodesk Media and Entertainment.[1] It has modeling capabilities, a flexible plugin architecture and can be used on the Microsoft Windows platform. It is frequently used by video game developers, many TV commercial studios and architectural visualization studios. It is also used for movie effects and movie pre-visualization.

Video made with 3ds max:
https://www.youtube.com/watch?v=jtWPW8yJtgMI can't do 3ds Max.
http://www.autodesk.com/products/revit-family/overviewAutodesk Revit is Building information modeling software for architects, structural engineers, MEP engineers, designers and contractors. It allows users to design a building and structure and its components in 3D, annotate the model with 2D drafting elements and access building information from the building models database. Revit is 4D BIM capable with tools to plan and track various stages in the building's lifecycle, from concept to construction and later demolition.

I'll add some more programs later.
Feel free to talk about anything Autodesk-related, what programs you use, what you've made, etc.
None of these images except for the V logo are mine. Don't sue me.