The current commercially available version is VML 3.0, developed under both NASA SBIR funding and internal Blue Sun research and development funding. VML 3.0 is available to qualified projects at published licensing rates. Blue Sun employs the author of VML, Dr. Christopher Grasso, to provide support to customers once a delivery has been requested.
The VML package includes source code for a flight software component coded in C, source code for a workstation component with a user interface for testing sequences, and a compiler application which translates human-readable VML script into an uplinkable binary format.
In addition, missions may request access to full documentation that defines requirements and design. Review access is also available to an exhaustive set of automated unit tests allows the code to be checked for consistency after adaptation to a new environment.
Tools for configuring VML are available as additional products.