Here is a list of all files with brief descriptions:

callable_traits.h
divideconquer.h
native/divideconquer.h
omp/divideconquer.h
poly/divideconquer.h
seq/divideconquer.h
tbb/divideconquer.h
farm.h
native/farm.h
omp/farm.h
poly/farm.h
seq/farm.h
tbb/farm.h
grppi.h
iterator.h
iterator_traits.h
map.h
native/map.h
omp/map.h
poly/map.h
seq/map.h
tbb/map.h
mapreduce.h
native/mapreduce.h
omp/mapreduce.h
poly/mapreduce.h
seq/mapreduce.h
tbb/mapreduce.h
mpmc_queue.h
pack_traits.h
parallel_execution_native.h
parallel_execution_omp.h
parallel_execution_tbb.h
patterns.h
native/pipeline.h
omp/pipeline.h
pipeline.h
poly/pipeline.h
seq/pipeline.h
tbb/pipeline.h
polymorphic_execution.h
pool.h
native/reduce.h
omp/reduce.h
poly/reduce.h
reduce.h
seq/reduce.h
tbb/reduce.h
sequential_execution.h
native/stencil.h
omp/stencil.h
poly/stencil.h
seq/stencil.h
stencil.h
tbb/stencil.h
native/stream_filter.h
omp/stream_filter.h
poly/stream_filter.h
seq/stream_filter.h
stream_filter.h
tbb/stream_filter.h
native/stream_iteration.h
poly/stream_iteration.h
seq/stream_iteration.h
stream_iteration.h
native/stream_reduce.h
omp/stream_reduce.h
poly/stream_reduce.h
seq/stream_reduce.h
stream_reduce.h
tbb/stream_reduce.h
support.h