Here is a list of all files with brief descriptions:

__init__.py
analogueRecorder.h
array.h
cuda/backend.cc
single_threaded_cpu/backend.cc
opencl/backend.cc
cuda/backend.h
single_threaded_cpu/backend.h
opencl/backend.h
backendBase.cc
backendBase.h
backendExport.h
backendSIMT.cc
backendSIMT.h
binomial.cc
binomial.h
clangfeatures.h
clRNG.c
clRNG.h	Library definitions common to all RNG's
codeGenUtils.cc
codeGenUtils.h
codeStream.cc
codeStream.h
compilerfeatures.h
connectors.cc
connectors.h
currentSource.cc
currentSource.h
currentSourceInternal.h
currentSourceModels.cc
currentSourceModels.h
customUpdate.cc
customUpdate.h
customUpdateGroupMerged.cc
customUpdateGroupMerged.h
customUpdateInternal.h
customUpdateModels.cc
customUpdateModels.h
gccfeatures.h
generateMakefile.cc
generateMakefile.h
generateModules.cc
generateModules.h
generateMSBuild.cc
generateMSBuild.h
generateRun.h
generateRunner.cc
generateRunner.h
generateSupportCode.cc
generateSupportCode.h
genn_groups.py
genn_model.py
gennExport.h
gennUtils.cc
gennUtils.h
groupMerged.cc
groupMerged.h
initGroupMerged.cc
initGroupMerged.h
initSparseConnectivitySnippet.cc
initSparseConnectivitySnippet.h
initToeplitzConnectivitySnippet.cc
initToeplitzConnectivitySnippet.h
initVarSnippet.cc
initVarSnippet.h
input.cc
input.h
inputValue.cc
inputValue.h
lfsr113.c
device/lfsr113.c.h
lfsr113.c.h
lfsr113.h
logging.cc
logging.h
logOutput.cc
logOutput.h
logWriter.h
model_preprocessor.py
modelProperty.cc
modelProperty.h
models.cc
models.h
modelSpec.cc
modelSpec.h	Header file that contains the class (struct) definition of neuronModel for defining a neuron model and the class definition of ModelSpec for defining a neuronal network model. Part of the code generation and generated code sections
modelSpecInternal.h
modelSpecMerged.cc
modelSpecMerged.h
device/modular.c.h
modular.c.h
modularHost.c.h
msvcfeatures.h
networkClient.cc
networkClient.h
neuronGroup.cc
neuronGroup.h
neuronGroupInternal.h
neuronModels.cc
neuronModels.h
neuronUpdateGroupMerged.cc
neuronUpdateGroupMerged.h
normalDistribution.h
open64features.h
openclfeatures.h
cuda/optimiser.cc
single_threaded_cpu/optimiser.cc
opencl/optimiser.cc
cuda/optimiser.h
single_threaded_cpu/optimiser.h
opencl/optimiser.h
philox.h
philox432.c
device/philox432.c.h
philox432.c.h
philox432.h
postsynapticModels.cc
postsynapticModels.h
presynapticUpdateStrategySIMT.cc
presynapticUpdateStrategySIMT.h
private.c
private.h
sharedLibraryModel.h
simulator.cc
simulator.h
snippet.h
spikeRecorder.h
sse.h
stateVar.h
substitutions.cc
substitutions.h
supportCodeMerged.h
synapseGroup.cc
synapseGroup.h
synapseGroupInternal.h
synapseMatrixType.h
synapseUpdateGroupMerged.cc
synapseUpdateGroupMerged.h
teeStream.h
include/spineml/simulator/timer.h
userproject/include/timer.h
cuda/utils.h
opencl/utils.h
varAccess.h
variableMode.h
weightUpdateModels.cc
weightUpdateModels.h