JsQuery provides additional functionality for the PostgreSQL jsonb datatype, such as a simple and effective way to search in nested objects and arrays, and more comparison operators with index support. It does this by implementing a specialized search syntax, the @@ operator, and the jsquery type for search strings.

Qt is a cross-platform C++ application framework. Qt's primary feature is its rich set of widgets that provide standard GUI functionality.

Sioyek is a PDF viewer with a focus on textbooks and research papers. It is a power user's PDF viewer, featuring smart open, table of contents generation, and jumping to references and figures, even if not linked.

Fungw is a tiny, portable library written in C (C89) that manages dynamic function calls across different programming languages.

pgmemcache is an extension for PostgreSQL that provides an API to memcached through user-defined functions.

cmark-gfm is the GitHub flavor of the cmark C reference implementation of CommonMark, a rationalized version of Markdown syntax with a spec. This package provides the required gfm library