The Magick++ library is a set of C++ wrapper classes that provides access to the ImageMagick package functionality from within a C++ application.

FreeRDP is a libre client/server implementation of the Remote Desktop Protocol (RDP).

pg_repack is a PostgreSQL extension which lets you remove bloat from tables and indexes, and optionally restore the physical order of clustered indexes. Unlike CLUSTER and VACUUM FULL it works online, without holding an exclusive lock on the processed tables during processing. pg_repack is efficient to boot, with performance comparable to using CLUSTER directly.

The pglogical extension provides logical streaming replication between PostgreSQL instances, using a publish/subscribe model. Contrary to the built-in streaming replication, pglogical can replicate between major versions or different architectures and is not restricted to replicate the entire instance but can selectively replicate arbitrary sets of tables.

This PostgreSQL extension implements t-digest, a data structure for on-line accumulation of rank-based statistics such as quantiles and trimmed means. The algorithm is also very friendly to parallel programs.

ScaLAPACK is the parallel version of LAPACK used on clusters.