Applications and libraries/Network

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Libraries and tools for various network protocols. See also Libraries and tools/Web programming for HTML specific tools.


high-performance distributed reverse / forward proxy & tunneling for TCP
A distributed chat server
Conjure is a Haskell implementation of the bittorrent protocol
Conjure-alt is an alternative version of the above bittorrent client.
'downNova' is a program designed for automating the process of downloading TV Series from It will scan your downloaded files to find out what your interests are and download missing/new episodes to your collection. Advanced classification techniques are used to interpret the file names and 'downNova' will correctly extract series name, season number, episode number and episode title in nigh all cases.
A command-line FTP client.
A sandboxing evaluation supervisor, used as the backend to
A full-featured console IRC client
Ginsu is a client for the gale chat system. It is designed to be powerful and above all stable, as well as having a quick learning curve.
A gopher caching spider, similar in goals to the wayback machine at Written in Haskell, uses the HDBC database engine.
Hazakura - search-based MUA
Jun Mukai's search-based mail client, written in Haskell.
An IRC client in haskell
hpodder is a podcast downloader that happens to be written in Haskell, providing nice apt-like output and multithreaded downloading.
An IRC bot implemented in Haskell, with a plugin architecture, providing many many services, including:
  • Haskell evaluation, type and kind checking
  • Type search, identifier search, library search, google and wikipedia search
  • Code refactoring
  • And more!
lambdaFeed is an RSS 2.0 feed generator. It reads news items - in a non-XML, human-friendly format - distributed over multiple channels and renders them into the RSS 2.0 XML format understood by most news aggregators as well as into HTML for inclusion into web pages.
linkchk is a network interface link ping monitor. It supports both IPv4 and IPv6. It works by monitoring the routing table and pinging the gateway (next hop) of a network interface.


Monadic ACID transactions, a high performance HTTP server, an SMTP server, a DNS server, mail delivery agent, XML and XSLT, and more.
HTTP and Browser Modules
A significantly RFC compliant HTTP/1.1 client implementation. This is an updated version of Warrick Gray's original version.
Support for the HTTP/IMAP/POP3/SMTP protocols.
Alternative high speed network implementation supporting various IO strategies including epoll.
A pure haskell implementation of TLS (Supporting SSL3, TLS1.0 and TLS1.1) for server and client sides. only core implementation, helpers and easy to use defaults in tls-extra.
Support for SSL/TLS connections using the GnuTLS system library.
ldap-haskell is a Haskell binding to C-based LDAP libraries such as OpenLDAP. With ldap-haskell, you can interrogate an LDAP directory, update its entries, add data to it, etc. ldap-haskell provides an interface to all the most common operations you would need to perform with an LDAP server.
HsEmail : Parsers for the Internet Message Standard
Peter Simons' Parsec combinators for the syntax of Internet messages, such as e-mail, news articles, namely RFC2234, RFC2821, and RFC2822
Set of modules for building network servers, including a DNS example.
Another Haskell MIME Library
Haskell library for reading and writing MIME messages (aka, email)
darcs get
Message Passing Interface
PiMonad: a library for pi calculus channels
A lightweight implementation of the Pi-Calculus, a process algebra with channel-passing features and a network programming framework equipped with channel-passing feature.
a logging framework for Haskell. hslogger's features include:
  • Each log message has a priority and a source associated with it
  • Multiple log writers can be on the system
  • Configurable global actions based on priority and source
  • Extensible log writers (handlers)
  • Default handlers that write to the console, file handles, or syslog
  • Easy to use operation
haskell bindings for memcached. See other library by Evan Martin
A Haskell binding to powermate
ZeroMQ Haskell bindings
"ØMQ (ZeroMQ, 0MQ, zmq) looks like an embeddable networking library but acts like a concurrency framework."