The Persistent Memory Development Kit is a collection of libraries and tools. The source is spread across many repositories. Components are separated like this to help with the logistics of parallel development and asynchronous delivery.

Components Focused on Persistence:

Repo Name	Description	Microsite
pmdk	PMDK Core C libraries and tools: libpmem libpmem2 libpmemobj libpmemblk libpmemlog librpmem libpmempool libpmemset (in development) pmempool utility Core PMDK C examples Web content for pmem.io/pmdk (in gh-pages branch)	pmem.io/pmdk
libpmemobj-cpp	C++ bindings & containers for libpmemobj	pmem.io/libpmemobj-cpp
llpl	Low-Level Persistence Library for Java	pmem.io/java/llpl
libpmemobj-js	JavaScript bindings for libpmemobj	-
miniasync	C low-level concurrency library for asynchronous functions
pmemkv-bench	Benchmarks for pmemkv	-
pmemkv-python	Python bindings for pmemkv	pmem.io/pmemkv-python
pmemkv-nodejs	NodeJS bindings for pmemkv	pmem.io/pmemkv-nodejs
pmemkv-ruby	Ruby bindings for pmemkv	pmem.io/pmemkv-ruby
pmemkv-java	Java bindings for pmemkv	pmem.io/pmemkv-java
pmdk-convert	Conversion tool for PMDK pools	pmdk-convert
valgrind	Enhanced Valgrind containing the pmemcheck plugin	pmem.io/valgrind
pmdk-tests	Extended PMDK tests	-
rpma	C library to simplify accessing persistent memory (PMem) on remote hosts over Remote Direct Memory Access (RDMA)	pmem.io/rpma

Components Focused on Volatile Usages of pmem:

Repo Name	Description	Microsite
memkind	General-purpose malloc/free-style library (Actually lives outside the pmem GitHub org since it has a life outside of pmem as well)	-
vmemcache	A buffer based LRU cache	pmem.io/vmemcache
vmem	libvmem, the predecessor to libmemkind. Maintenance-only -- use libmemkind for all new development.	pmem.io/vmem/libvmem

Experimental PMDK components (not yet ready for production use):

Repo Name	Description	Microsite
pcj	Persistent Collections for Java	-
pmemfile	Userspace implementation of file APIs using pmem	-
syscall_intercept	Syscall intercepting library used by libpmemfile	-
vltrace	Tool for tracing syscalls	-
pynvm	Experimental prototype Python bindings for libpmemobj	-

Other:

Repo Name	Description	Microsite
dev-utils-kit	Tools used for development of projects under pmem organization (WIP)	-
autoflushtest	Basic data integrity test for platforms with flush-on-fail CPU caches	-

ndctl is the Linux utility for managing persistent memory.

Repo Name	Description	Microsite
ndctl	ndctl, daxctl, and related libraries	pmem.io/ndctl

The pmem.io website is implemented as static content on GitHub using Jekyll, GitHub-flavored MarkDown, and some tool-generated HTML here and there. Some sub-areas of the website live in the gh-pages branch of the corresponding repo (for example, pmdk and ndctl).

Repo Name	Description	Microsite
docs	Persistent Memory Docbook	-
pmem.github.io	Repo containing the pmem.io website (including blogs)	-
pmdk-examples	PMDK examples and tutorials	-
book	Examples used in the pmem Programming Book	-
knowledge-base	Knowledge Base for pmem.io	pmem.io/knowledgebase

These repos contain experimental versions of software modified to leverage persistent memory. Typically, when the features are mature and tested they become part of the upstream repo.

Repo Name	Description	Microsite
pelikan	Working tree for development of pmem-related features for Twitter's Pelikan	-
pmem-rocksdb	RocksDB modified to use pmem	-
pmem-redis	Redis, enhanced to use pmem	-
pmse	MongoDB pmem Storage Engine Prototype	-
kvdk	Reference code of key/value store design for pmem	-

These repos are no longer under active development or use. We archive them here for reference.

Repo Name	Description	Microsite
linux-examples	Original ideas	-
redis	Initial pmem enhancements to Redis	-
rocksdb	Initial pmem enhancements to RocksDB	-
libcxx	Experimental pmem-aware libcxx	-
mpi-pmem-ext	MPI Extensions for pmem	-
issues	Archive of some old issues. No longer in-use.	-
pmemkv-jni	Java bindings via JNI for pmemkv	-