3Delight is a very fast RenderMan-compliant renderer designed to produce photorealistic images for serious production environments. Some of its features include ray tracing, global illumination, motion blur, depth of field, subdivision surfaces, programmable shaders, quality antialiasing, and antialiased multi-depth shadow maps. The API and the shading language are very similar to what is described in the RenderMan interface documentation.
Indigo is a universal organic chemistry toolkit. It contains tools for end users, as well as a documented API for developers. It is based on a cheminformatics library that incorporates a number of unique algorithms developed by GGA Software Services, as well as some standard algorithms well known in the cheminformatics world. The API allows developers to integrate Indigo into their C/Java/C#/Python projects. Two Indigo-based Java GUI applications are provided: Legio (combinatorial chemistry) and chemdiff (visual comparison of two SDF or SMILES files). Three Indigo-based command line utilities written in plain C are provided: indigo-depict (molecule and reaction rendering utility), indigo-cano (canonical SMILES generator), and indigo-deco (R-Group deconvolution utility).
Boxes is a text filter that can draw any kind of box around its input text. Box design choices range from simple boxes to complex ASCII art. A box can also be removed and repaired, even if it has been badly damaged by editing of the text inside. Since the generated boxes may be open on any side, the program can also be used to create regional comments in any programming language. New box designs of all sorts can easily be added and shared by appending to a free format configuration file. In addition to being a command line tool, Boxes integrates well with any text editor that supports filters.