TeX Live: ptex encoding library (development part)

Header files and a static library for Python (v3.9)

Testsuite for the Python standard library (v3.9)

Global Positioning System - Qt wrapper for libgps (development)

Qt 5 OpenGL library development files

cluster engine Quorum library development

AMQP client library written in C - Dev Files

RADOS distributed object store client library (development files)

RADOS distributed object store client C++ library (development files)

RADOS striping interface (development files)

Raptor 2 RDF syntax library development libraries and headers

raw image decoder library (development files)

RADOS block device client library (development files)

Stand-alone graphics debugging tool -- development files

LibreOfficeKit -- headers

RADOS client library (development files)

library for rendering vector based animations and art (development headers)

SAX-based renderer library for SVG files (development)

cluster engine SAM library development

Security Assertion Markup Language library (development)

SELinux binary policy manipulation library and development files

Federated web single sign-on system (development)

Library for reading and writing ESRI Shapefiles - development files

Simulator Construction Gear -- development files

development files for libsmbclient

Development files for libsndfile; a library for reading/writing audio files

SNMP (Simple Network Management Protocol) development files

Network communication, cryptography and signaturing library - headers

SKYRiX Object Publishing Environment (development files)

HTTP library implementation in C -- Development files

HTTP library implementation in C -- GNOME support development files

SQLite 3 development files

tiny C SSH library - Development files (OpenSSL flavor)

tiny C SSH library - Development files (gcrypt flavor)

Secure Sockets Layer toolkit - development files

Certificate mapping library for SSSD -- development files

ID mapping library for SSSD -- development files

SID based lookups library for SSSD -- development files

SSSD D-Bus responder helper library -- development files

single-file image and audio processing libraries for C/C++ - development headers

Rust standard libraries - development files

SVG-framework with parsers for various syntaxes and adapters. Development files

Development files for Apache Subversion libraries

FFmpeg library for audio resampling, rematrixing etc. - development files

FFmpeg library for image scaling and various conversions - development files

TeX Live: SyncTeX parser library (development part)

systemd utility library - development files

audio meta-data library - development files

audio meta-data library - development files for C bindings

C library for manipulating tar archives (development files)