| [OpenJPEG](https://www.openjpeg.org/) | OpenJPEG is an open-source JPEG 2000 codec written in C language. It has been developed in order to promote the use of JPEG 2000, a still-image compression standard from the Joint Photographic Experts Group (JPEG). Since may 2015, it is officially recognized by ISO/IEC and ITU-T as a JPEG 2000 Reference Software. |
| [OpenJPEG](https://www.openjpeg.org/) | OpenJPEG is an open-source JPEG 2000 codec written in C language. It has been developed in order to promote the use of JPEG 2000, a still-image compression standard from the Joint Photographic Experts Group (JPEG). Since may 2015, it is officially recognized by ISO/IEC and ITU-T as a JPEG 2000 Reference Software. |
| [PMIx](https://pmix.org/) | Process Management for Exascale Environments PMI Exascale (PMIx) represents an attempt to provide an extended version of the PMI standard specifically designed to support clusters up to and including exascale sizes. The overall objective of the project is not to branch the existing pseudo-standard definitions - in fact, PMIx fully supports both of the existing PMI-1 and PMI-2 APIs - but rather to (a) augment and extend those APIs to eliminate some current restrictions that impact scalability, and (b) provide a reference implementation of the PMI-server that demonstrates the desired level of scalability. |
| [PMIx](https://pmix.org/) | Process Management for Exascale Environments PMI Exascale (PMIx) represents an attempt to provide an extended version of the PMI standard specifically designed to support clusters up to and including exascale sizes. The overall objective of the project is not to branch the existing pseudo-standard definitions - in fact, PMIx fully supports both of the existing PMI-1 and PMI-2 APIs - but rather to (a) augment and extend those APIs to eliminate some current restrictions that impact scalability, and (b) provide a reference implementation of the PMI-server that demonstrates the desired level of scalability. |
| [pocl](http://portablecl.org) | PoCL is a portable open source (MIT-licensed) implementation of the OpenCL standard (1.2 with some 2.0 features supported). |
| [pocl](http://portablecl.org) | PoCL is a portable open source (MIT-licensed) implementation of the OpenCL standard (1.2 with some 2.0 features supported). |
| [poppler](https://poppler.freedesktop.org) | Poppler is a PDF rendering library |
| [PROJ](https://proj.org) | Program proj is a standard Unix filter function which converts geographic longitude and latitude coordinates into cartesian coordinates |
| [PROJ](https://proj.org) | Program proj is a standard Unix filter function which converts geographic longitude and latitude coordinates into cartesian coordinates |
| [pybind11](https://pybind11.readthedocs.io) | pybind11 is a lightweight header-only library that exposes C++ types in Python and vice versa, mainly to create Python bindings of existing C++ code. |
| [pybind11](https://pybind11.readthedocs.io) | pybind11 is a lightweight header-only library that exposes C++ types in Python and vice versa, mainly to create Python bindings of existing C++ code. |
| [PyYAML](https://github.com/yaml/pyyaml) | PyYAML is a YAML parser and emitter for the Python programming language. |
| [PyYAML](https://github.com/yaml/pyyaml) | PyYAML is a YAML parser and emitter for the Python programming language. |