adns

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

aqbanking

Generic Online Banking Interface

c-client

UW IMAP c-client library

ccrtp

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

clinkcc

CyberLink for C++ is a development package for UPnP

courier-authlib

Courier authentication library.

cvm

Credential Validation Modules by Bruce Guenter

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.

gloox

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

gnet

A simple network library.

gnutls

A TLS 1.0 and SSL 3.0 implementation for the GNU project

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

ldns

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

libasyncns

C library for executing name service queries asynchronously.

libbo2k

Linux BO2K communication library.

libbt

implementation of the BitTorrent core protocols in C

libcapsinetwork

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

libdexter

Libdexter is a plugin-based, distributed sampling library

libecap

API for implementing ICAP content analysis and adaptation

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

libfwbuilder

Firewall Builder 3.0 API library and compiler framework

libgadu

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

libgmail

Python bindings to access Google's gmail service

libgsasl

The GNU SASL library

libgssglue

exports a gssapi interface which calls other random gssapi libraries

libicq2000

ICQ 200x compatible ICQ libraries.

libident

A small library to interface to the Ident protocol server

libinfinity

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

libjingle

Google's jabber voice extension library modified by Tapioca/Farsight

liblockfile

Implements functions designed to lock the standard mailboxes

libmapi

Portable open-source implementations of Exchange protocols.

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.

libnet

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

libnetdude

Library for manipulating libpcap/tcpdump trace files

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

emulates the IP stack of Linux 2.0.x and offers IP defragmentation, TCP stream assembly and TCP port scan detection.

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

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

librpcsecgss

implementation of rpcsec_gss (RFC 2203) for secure rpc communication

librsync

Flexible remote checksum-based differencing

libsmi

A Library to Access SMI MIB Information

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

libtelepathy

A glib based library for Telepathy client development

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

nativebiginteger

NativeBigInteger libs for Freenet taken from i2p

NativeThread

NativeThread for priorities on linux for freenet

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

obby

Library for collaborative text editing

opal

OPAL library, used by Ekiga

openh323

Open Source implementation of the ITU H.323 teleconferencing protocol

openmq-cclient

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

openslp

An open-source implementation of Service Location Protocol

ortp

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

osptoolkit

OSP (Open Settlement Protocol) library

polarssl

Cryptographic library for embedded systems

ptlib

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

rb_libtorrent

C++ BitTorrent implementation focusing on efficiency and scalability

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-glib

GLib 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

wvstreams

A network programming library in C++

xulrunner

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

xulrunner-bin

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

adns

libinfinity

libupnp

aqbanking

libjingle

libvncserver

c-client

liblockfile

libwhisker

ccrtp

libmapi

libwww

clinkcc

libmonetra

libyahoo2

courier-authlib

libmrss

libzrtpcpp

cvm

libmsn

loudmouth

enet

libnet

meanwhile

farsight2

libnetdude

nativebiginteger

gloox

libnetfilter_conntrack

NativeThread

gnet

libnetfilter_log

net6

gnutls

libnetfilter_queue

netembryo

gsoap

libnfnetlink

netwib

gssdp

libnfsidmap

obby

gtk-vnc

libnice

opal

gupnp

libnids

openh323

gupnp-av

libnipper

openmq-cclient

gupnp-igd

libntlm

openslp

gupnp-ui

libnxml

ortp

gupnp-vala

libopkele

osptoolkit

iax

libosip

polarssl

ldns

libotr

ptlib

libasyncns

libpcap

rb_libtorrent

libbo2k

libpcapnav

roadrunner

libbt

libpri

rpc2

libcapsinetwork

libproxy

serf

libdexter

librpcsecgss

socket++

libecap

librsync

sofia-sip

libesmtp

libsmi

telepathy-farsight

libetpan

libsoup

telepathy-glib

libeXosip

libsoup-gnome

udns

libfwbuilder

libsrtp

vanessa-mcast

libgadu

libssh

vanessa-socket

libgmail

libssh2

webkit-gtk

libgsasl

libtelepathy

wvstreams

libgssglue

libtirpc

xulrunner

libicq2000

libtlen

xulrunner-bin

libident

libtorrent