adns

Advanced, easy to use, asynchronous-capable DNS client library and utilities

aqbanking

Generic Online Banking Interface

axTLS

Embedded client/server TLSv1 SSL library and small HTTP(S) server

c-client

UW IMAP c-client library

canlock

A library for creating and verifying Usenet cancel locks

ccrtp

GNU ccRTP is an implementation of RTP, the real-time transport protocol from the IETF

courier-authlib

Courier authentication library.

cvm

Credential Validation Modules by Bruce Guenter

cyassl

Lightweight SSL/TLS library targeted at embedded and RTOS environments

czmq

CZMQ - High-level C Binding for ZeroMQ

daq

Data Acquisition library, for packet I/O

dhcpcd-dbus

DBus bindings for dhcpcd

dslib

Library to access Czech eGov system "Datove schranky"

enet

relatively thin, simple and robust network communication layer on top of UDP

farsight2

Farsight2 is an audio/video conferencing framework specifically designed for Instant Messengers.

farstream

Farsight2 is an audio/video conferencing framework specifically designed for Instant Messengers.

ftplib

A set of routines that implement the FTP protocol

glib-networking

Network-related giomodules for glib

gloox

A portable high-level Jabber/XMPP library for C++

gnet

A simple network library.

gnome-online-accounts

GNOME framework for accessing online accounts

gnutls

A TLS 1.2 and SSL 3.0 implementation for the GNU project

gsnmp

An SNMP library based on glib and gnet

gsoap

A cross-platform open source C and C++ SDK to ease the development of SOAP/XML Web services

gssdp

A GObject-based API for handling resource discovery and announcement over SSDP.

gtk-vnc

VNC viewer widget for GTK

gupnp

An object-oriented framework for creating UPnP devs and control points

gupnp-av

A small utility library that aims to ease the handling UPnP A/V profiles

gupnp-igd

This is a library to handle UPnP IGD port mapping for GUPnP.

gupnp-ui

Collection of simple GTK+ widgets on top of GUPnP.

gupnp-vala

Vala bindings for the GUPnP framework

iax

IAX (Inter Asterisk eXchange) Library

jreen

Qt XMPP library

ldns

ldns is a library with the aim to simplify DNS programing in C

libasyncns

C library for executing name service queries asynchronously.

libbluedevil

Qt wrapper for bluez used in the KDE bluetooth stack

libbt

implementation of the BitTorrent core protocols in C

libbtbb

A library to decode Bluetooth baseband packets

libcapsinetwork

C++ network library to allow fast development of server daemon processes

libdexter

Libdexter is a plugin-based, distributed sampling library

libdmapsharing

A library that implements the DMAP family of protocols

libecap

API for implementing ICAP content analysis and adaptation

libepc

Easy Publish and Consume library for network discovered services

libesmtp

lib that implements the client side of the SMTP protocol

libetpan

A portable, efficient middleware for different kinds of mail access.

libeXosip

library that hides the complexity of using the SIP protocol for multimedia session establishement

libgadu

This library implements the client side of the Gadu-Gadu protocol

libgcal

C/C++ interface to the Google Data API

libgmail

Python bindings to access Google's gmail service

libgrss

LibGRSS is a library for easy management of RSS/Atom/Pie feeds

libgsasl

The GNU SASL library

libgssglue

exports a gssapi interface which calls other random gssapi libraries

libident

A small library to interface to the Ident protocol server

libinfinity

An implementation of the Infinote protocol written in GObject-based C.

libircclient

Small but powerful library implementing the client-server IRC protocol

libisds

Client library for accessing ISDS Soap services

libktorrent

A BitTorrent library based on KDE Platform

libkvkontakte

Library for accessing the features of social networking site vkontakte.ru

liblockfile

Implements functions designed to lock the standard mailboxes

libmapi

Portable open-source implementations of Exchange protocols.

libmicrohttpd

A small C library that makes it easy to run an HTTP server as part of another application.

libmnl

Minimalistic nelink library

libmonetra

library for connecting to a MCVE Credit Card Processing Daemon via SSL, TCP/IP, and drop-files.

libmrss

A C-library for parsing and writing RSS 0.91/0.92/1.0/2.0 files or streams

libmsn

Library for connecting to Microsoft's MSN Messenger service.

libnatpmp

An alternative protocol to UPnP IGD specification

libnet

library to provide an API for commonly used low-level network functions (mainly packet injection)

libnetfilter_conntrack

programming interface (API) to the in-kernel connection tracking state table

libnetfilter_log

interface to packets that have been logged by the kernel packet filter

libnetfilter_queue

API to packets that have been queued by the kernel packet filter

libnfnetlink

the low-level library for netfilter related kernel/userspace communication

libnfsidmap

NFSv4 ID <-> name mapping library

libnice

An implementation of the Interactice Connectivity Establishment standard (ICE)

libnids

an implementation of an E-component of Network Intrusion Detection System

libnipper

A router configuration security analysis library

libntlm

Microsoft's NTLM authentication (libntlm) library

libnxml

A C-library for parsing and writing XML 1.0/1.1 files or streams

liboauth

C library implementing the OAuth secure authentication protocol

liboping

C library and ncurses based program to generate ICMP echo requests and ping multiple hosts at once

libopkele

A C++ implementation of an OpenID decentralized identity system

libosip

GNU oSIP (Open SIP) library version 2

libotr

(OTR) Messaging allows you to have private conversations over instant messaging

libpcap

A system-independent library for user-level network packet capture

libpcapnav

A libpcap wrapper library that allows navigation to arbitrary packets in a tcpdump trace file between reads, using timestamps or percentage offsets.

libpri

Primary Rate ISDN (PRI) library

libproxy

Library for automatic proxy configuration management

librouteros

Library for accessing MikroTik's RouterOS via its API

librpcsecgss

implementation of rpcsec_gss (RFC 2203) for secure rpc communication

librsync

Flexible remote checksum-based differencing

libs3

A C Library API for Amazon S3

libsmi

A Library to Access SMI MIB Information

libsocialweb

Social web services integration framework

libsoup

An HTTP library implementation in C

libsoup-gnome

GNOME plugin for libsoup

libsrtp

Open-source implementation of the Secure Real-time Transport Protocol (SRTP)

libssh

Access a working SSH implementation by means of a library

libssh2

Library implementing the SSH2 protocol

libtirpc

Transport Independent RPC library (SunRPC replacement)

libtlen

Support library for Tlen IMS

libtorrent

LibTorrent is a BitTorrent library written in C++ for *nix.

libupnp

An Portable Open Source UPnP Development Kit

libvncserver

library for creating vnc servers

libwhisker

Perl module geared to HTTP testing

libwww

A general-purpose client side WEB API

libyahoo2

interface to the new Yahoo! Messenger protocol

libzrtpcpp

GNU RTP stack for the zrtp protocol developed by Phil Zimmermann

loudmouth

Lightweight C Jabber library

meanwhile

Meanwhile (Sametime protocol) library

miniupnpc

UPnP client library and a simple UPnP client

nativebiginteger

jbigi JNI library for net.i2p.util.NativeBigInteger java-class from I2P

NativeThread

NativeThread for priorities on linux for freenet

neon

HTTP and WebDAV client library

net6

Network access framework for IPv4/IPv6 written in C++

netembryo

a network abstraction library

netwib

Library of Ethernet, IP, UDP, TCP, ICMP, ARP and RARP protocols

nodejs

Evented IO for V8 Javascript

obby

Library for collaborative text editing

opal

C++ class library normalising numerous telephony protocols

openh323

Open Source implementation of the ITU H.323 teleconferencing protocol

openmq-cclient

C-Client Library for Open Source Java Message Service (JMS)

openpgm

OpenPGM is an open source implementation of the Pragmatic General Multicast (PGM) specification

openslp

An open-source implementation of Service Location Protocol

ortp

Open Real-time Transport Protocol (RTP, RFC3550) stack

osptoolkit

Open Settlement Protocol development kit

pjsip

Multimedia communication libraries written in C language for building VoIP applications.

polarssl

Cryptographic library for embedded systems

ptlib

Network focused portable C++ class library providing high level functions

qmf

The Qt Messaging Framework

qtweetlib

Qt based Twitter library

qxmpp

A cross-platform C++ XMPP client library based on the Qt framework.

rb_libtorrent

C++ BitTorrent implementation focusing on efficiency and scalability

rest

Helper library for RESTful services

roadrunner

RoadRunner library provides API for using Blocks Extensible Exchange Protocol

rpc2

Remote procedure call package for IP/UDP (used by Coda)

serf

HTTP client library

socket++

C++ Socket Library

sofia-sip

RFC3261 compliant SIP User-Agent library

telepathy-farsight

Farsight connection manager for the Telepathy framework

telepathy-farstream

Telepathy client library that uses Farsight2 to handle Call channels

telepathy-glib

GLib bindings for the Telepathy D-Bus protocol.

telepathy-qt

Qt4 bindings for the Telepathy D-Bus protocol

udns

Async-capable DNS stub resolver library

vanessa-mcast

Multicast Helper Library

vanessa-socket

Simplifies TCP/IP socket operations.

webkit-gtk

Open source web browser engine

wt

C++ library for developing interactive web applications.

wvstreams

A network programming library in C++

xrootd

Extended ROOT remote file server

xulrunner

Mozilla runtime package that can be used to bootstrap XUL+XPCOM applications

zeromq

ZeroMQ is a brokerless messaging kernel with extremely high performance.

adns

libgsasl

libupnp

aqbanking

libgssglue

libvncserver

axTLS

libident

libwhisker

c-client

libinfinity

libwww

canlock

libircclient

libyahoo2

ccrtp

libisds

libzrtpcpp

courier-authlib

libktorrent

loudmouth

cvm

libkvkontakte

meanwhile

cyassl

liblockfile

miniupnpc

czmq

libmapi

nativebiginteger

daq

libmicrohttpd

NativeThread

dhcpcd-dbus

libmnl

neon

dslib

libmonetra

net6

enet

libmrss

netembryo

farsight2

libmsn

netwib

farstream

libnatpmp

nodejs

ftplib

libnet

obby

glib-networking

libnetfilter_conntrack

opal

gloox

libnetfilter_log

openh323

gnet

libnetfilter_queue

openmq-cclient

gnome-online-accounts

libnfnetlink

openpgm

gnutls

libnfsidmap

openslp

gsnmp

libnice

ortp

gsoap

libnids

osptoolkit

gssdp

libnipper

pjsip

gtk-vnc

libntlm

polarssl

gupnp

libnxml

ptlib

gupnp-av

liboauth

qmf

gupnp-igd

liboping

qtweetlib

gupnp-ui

libopkele

qxmpp

gupnp-vala

libosip

rb_libtorrent

iax

libotr

rest

jreen

libpcap

roadrunner

ldns

libpcapnav

rpc2

libasyncns

libpri

serf

libbluedevil

libproxy

socket++

libbt

librouteros

sofia-sip

libbtbb

librpcsecgss

telepathy-farsight

libcapsinetwork

librsync

telepathy-farstream

libdexter

libs3

telepathy-glib

libdmapsharing

libsmi

telepathy-qt

libecap

libsocialweb

udns

libepc

libsoup

vanessa-mcast

libesmtp

libsoup-gnome

vanessa-socket

libetpan

libsrtp

webkit-gtk

libeXosip

libssh

wt

libgadu

libssh2

wvstreams

libgcal

libtirpc

xrootd

libgmail

libtlen

xulrunner

libgrss

libtorrent

zeromq