Internet

Embedded Linux network appliance for use in small office and home automation environments; can be used as a gateway, router, firewall or in other ways. (C, C++, Shell script) [GNU/Linux]

Small online utility for IP address calculations including netmask, broadcast and network addresses as well as Cisco wildcard mask. (Perl)

A tool and a library (usable from many languages) for client-side URL transfers, supporting FTP, FTPS, HTTP, HTTPS, TELNET, DICT, FILE and LDAP. (C) [GNU/Linux, Unix, Windows, VMS, RISC OS, OS/2]

Modular realtime chat client supporting IRC and SILC protocols. Supports multiple servers, themes, perl scripting and plugins. (C) [GNU/Linux, Windows]

openMosixview cluster-management GUI

The g-Eclipse project aims to build an integrated workbench framework to access the power of existing Grid infrastructures like g-Lite or GRIA.

Resolves IP numbers to hostnames like in Apache, Squid, or other logfiles. It is able to cache lookups in a file. (Perl)

Assists in visualizing a Data Center's computer rack layouts by creating a web page with HTML tables to show a frontview of the racks. Included are brief commandline and CGI scripts to demonstrate its implementation. (Perl) [Linux]

A general purpose monitoring engine for use by home users and system administrators (Perl) [Unix, Win32]

A .NET web crawler written in C# using SQL 2005 and Lucene. Documentation and online demonstration.

Effort to implement a prototype of an open source web-search engine.

Java-based Apache licensed enterprise web crawler running on any platform, and integrating with virtually any search engines (open-source or commercial).

A HTTP and mail proxy server licensed under a 2-clause BSD-like license. By Igor Sysoev. [Unix, Mac OS X]

A community project building a free and comprehensive directory service, based on LDAP and DSML standards. (Java)

A website statistics and web analytics application. Support, demo, download, and forums are provided. (PHP)

Scripting language for web content management.

Synchronizes a collection of mailboxes, which may be on the local filesystem or on an IMAP server. (C++) [OS Independent]

An embedable web server and client written in C++. It uses the OpenSSL library for all connectivity and is therefore based on solid ground as far as support for cryptography and connectivity is concerned.