Pipetools is all about implementing a "clever" syntax for data flows, whereas PyFunctional looks like it's much more about providing a library of functions for manipulating data in functional ways.

I would expect that PyFunctional could probably implement the pipe syntax if they wanted, as just a layer of syntactic sugar on top of their core, however that would break OR semantics in places so I'm not convinced that syntax is a good choice, as "clever" as it may be.