The TwinCAT LabVIEW library uses variants to deal with typing. This library adds wrappers to provide a strictly typed interface.
A toolkit to help easily build database queries from LabVIEW data types.
A malleable, by-reference, lookup table API with in-placeness optimization and type abilities
A test executive library for adding sequencing with flow control to your application. The API uses malleability to keep typing of attributes flexible, and has an abstract Test Step class so that test steps are extensible and specific to your context.