You may use Inkscape and its Path/Node tool (Shift+F6)
It is Free/Open Source and multi-platform.
Here are some tutorials: http://www.inkscape.org/en/learn/tutorials/
Here is how you may begin:
First draw straight lines (1 and 2)
Modify them (3 and 4)
Right Click a line and choose Fill and Stroke. Modify Stroke to increase width
Save: File → Export ...
Sweet Home 3D
Take a look at Sweet Home 3D. Been around for many years.
It does 2D drawings like in your example, but can also show it in 3D (hence the name!). The app actually transforms your 2D drawings into 3D. You can stick with simple wireframe sketches or you can get fancy with realistic finishes. You can even record a video of a walk-through in your ...
Scribus is an open source desktop publisher.
Supports templates to separate content from presentation
It has a kind of mail merge
Support for font embedding and sub-setting with TrueType, Type 1 and OpenType fonts.
Free and open source.
Runs on Windows, Linux/UNIX, Mac OS X, OS/2 Warp 4/eComStation, FreeBSD, PC-BSD, ...
the one software that comes in my mind is Scribus:
supports RGB, CMYK and spot colors
shipped with almost 200 color palettes, and almost 400 more for download in the next stable version
My recommendation won't fit all your must-have requirements, but as far as I know its the best thats out there that comes close so I want to show it anyway.
I've used Balsamic Mockups in the past to mock up web applications, so I think it will be good to mock up websites as well. But keep that in mind, I'm not a web designer but a web app developer.
The official way to open CDR files is Corel Draw of course. Google hit number 7 for "cdr file" also says this.
Since you have not tagged this gratis, your colleagues use that software already and you use it at work in a company, it should just be a matter of some bosses decision to buy it (400 USD) in order to get the work done. If you spent 2 ...
You can use Krita. Krita is a free sketching and painting program. It was designed for concept art, illustrations, and texture painting. You can see what features are Krita supports here. Krita is an open source software. It's available on Linux. You can check it out here.
Besides GIMP, which you already mentioned that is generally the go-to alternative for Photoshop, there is also Krita.
While it is a fully capable general purpose image editing application it's main focus is on digital painting, with realistic brushes and tablet input devices. It also includes capable 2D animation features and 2D vector graphics editing ...
allows me to create simple 3D shapes
The simple shapes I have in mind are specifically Sphere, Box and Cylinder/Pipe.
has built-in shapes for plane, cube, cylinder, circle, sphere, cone and torus
different lighting conditions
and you can use point lamps, spots, suns, hemispheres and area lights. For even more realistic lighting, you ...
You could get a good starting point by using Gimp and the G'MIC plugin, take a photo of something related to your product and crop then use the G'MIC engrave filter, add your text and you are away.
E.g.: using the above process can give - not bad for 4 mins.
Note: GMIC is also available for command line use and ImageMagick can be used from the command line ...
The new WYSIWYG editors
Good for mockuping and initial design. Bad for working on an existing app.
Macaw, Sketch, Pinegrow or even Photoshop + Brackets
✔ Provide higher abstractions in regards to the design and layout of
a web application
✔ Provide a GUI that efficiently lets the designer
express his/hers intentions of styling
✔ Translate this ...
Two classical open source options are Inkscape and Scribus. I've used both to make pamphlets etc., and both run on Windows, Linux, and macOS.
Inkscape is a versatile vector graphics editor. It is fairly easy to get started with, but has a lot of advanced features. You have all basic shapes, polygons, line and fill styles, basic text, layers, effects like ...
This job seems easy to reach with Inkscape.
I took the liberty to upload some animated images, just to demonstrate that this program is versatile enough to create both the icons as well as the two charts.
For the second diagram, I used the Polar Grid extension to generate the nine spokes at equal intervals, but it is obvious that, depending on the ...
Maybe you could have a try of the Mockplus. Actually, it may not meet all you requirements, while, I still suggest to try it out.
Here is its characteristics to your requirements:
Windows or Linux YES, but just for Windows & Mac.
Desktop Application/Browser Based YES, it has desktop version.
Full-color mockups as opposed to wireframes NO, it helps you ...
If you are looking for something to do the drawing for you I think you are out of luck but you might like to take a look at Krita.
Cross Platform, (now including Win8.1).
Lots of online tutorials, including some specific to comics/graphic novels.
Interfaces with a number of graphics tablets and works really well with them, but no ...
Finally I found NegativeScreen
✓ turns the whole screen to greyscale
✓ supports multiple monitors
✓ is independent of the target application
✓ allows continuing working in the target application
✓ allows custom definition of shortcut
✓ is free (GPL license)
✓ works on Windows 7
✗ works on Windows XP
✓ is independend of the graphics driver
I created the ...
Since it looks like LaTex provides support for all(most) all the OpenType font variants, including swash, you can either generate your graphics directly in LaTeX or generate the elements and import into Inkscape then position them.
You may need to add some supplementary programs to be able to do the latter with:
sudo apt-get install texlive pstoedit
There is Mandelbulb.
it is free
is available for Windows and Mac
renders awesome 3D fractals
I'm not very familiar with it yet, but here's an example created by me:
There are of course better examples online made by artists who are more familiar with it.
Pinta is like PaintDotNet but is open source and multi platform. It is a simple image editor with a simpler interface than gimp. I think you can run sudo apt-get install pinta. Otherwise there's PPAs on the site or you can build from source.
You can edit AI files in a Mac with Inkscape, a free, open source vector graphics editor. Inkscape is a professional quality vector graphics software that is used by design professionals and hobbyists worldwide for creating a wide variety of graphics such as illustrations, icons, logos, diagrams, maps and web graphics.
In the past, as substitutes for Photoshop & Lightroom, I've used:
And as an Illustrator substitute:
The reality is, they all pale in comparison to their commerical counterparts. But they can still be quite useful. Also, ImageMagick can be scripted, which is nice.
I should add; the GUIs aren't attractive. They're decidedly ...
I use the open source Inkscape for vector graphics. It uses SVG as its native format, but exports to many formats, and can render PNG (bitmap) images from your vector drawings. (JPEG is not suited for these graphics, only for photos.)
This is a link to its own toturial on shapes, which includes working with circles and arcs: https://inkscape.org/en/doc/...
After doing some research I found that there are software used in Chemical and material science fields that can be used for the purpose. I am quoting here in case someone needs.
The wikipedia page lists some free and propitiatory software. Some of them provide raw building blocks (balls, links, ...) that can be used for any type of design (not just chemical)...
There is a Wireframe.cc which will work on all operating system, since it's a web services. Going to that site starts wire-framing experience in a second. It has tree templates: a browser window, a table and a mobile phones.
Public single-page wireframes are free, for more advanced options, there is some premium pricing.
InVision App which has cross ...
I would highly recommend using RealDraw Pro (free, fully-functioning trial version).
It's extremely simple to use
Exports to many different formats (including PSD)
Can create HTML slices (but who uses those now anyway)
Better than Inkscape
Runs on Windows
Runs on Linux (with Wine) / I've used it on Ubuntu
Bundled with thousands of existing ...
After some thought, I ended up creating a full complex pattern using an Excel spreadsheet.
I feel tremendously badass for having accomplished a task I thought I'd have depend on some CAD software and personnel who can work with it.
For anybody else that ever comes across this need and is looking for a solution, here is the spreadsheet: http://files....