Asymptote is a powerful descriptive vector graphics language useful for for technical drawing, using LaTeX for high-quality output. It’s not just a graphics program but a programming language. Asymptote is inspired by MetaPost but provides C++-like syntax. It runs on Linux, UNIX, MacOS and Windows. In a very mathematically oriented way you can create 2D and 3D graphics, here’s just a small example coming with the program:

Now it’s been released on CTAN, 19 May 2009.

For more information visit:

• the Asymptote package on CTAN,
• the Asymptote homepage.
  The homepage contains also
  • a gallery,
  • documentation,
  • Answers to frequently asked questions (FAQ),
  • a discussion forum and more.
• the forum Asymptote and GeoGebra on artofproblemsolving.com,
• the Asymptote Wiki also on AoPS,
• the Asymptote example gallery.

Asymptote can be used easily within LaTeX documents. There’s a good introduction by Dario Teixeira: Asymptote and LaTeX: An Integration Guide.

There are even more resources you can find if you follow those selected links.