Free chat software for linux

XHR Chat is a demonstration type chat script I wrote when experimenting with xmlHttpRequest. It never refreshes, keeps an infinite post log, and checks for new posts once a second.

XHR Chat will degrade gracefully if the browser doesnt support xmlHttpRequest, just so long it still has javascript enabled.

wchat is a telnet-based Chat Server written in the C language. It was originally based on chatC code, but then expanded to be a fully functional chat environment. wchat is designed to use minimal cpu or memory resources, and be a modular high-level code base. What this means is all low-level functions are written in separate libraries which wchat uses them.
This allows any additions or changes to the "look and feel" of the chat to be very simple and straight forward. wchat is an extremely stable and solid base from which to build a chat environment around. This is not a web chat, but a telnet chat server usually connected to via clients such as tinyfugue, gmud, CRT, etc.
Main features:
- System configurable network options (listen size, max user, etc.)
- Full ANSI color support
- Multiple chat channels
- Fully configurable handle with color support in handle
- Idle times
- System uptime information
- Basic login information
- message timestamps
- User accounts
- guest, normal, and admin user levels
- /admin command for admins

ICMP-Chat is a simple console-based chat that uses ICMP packets for communication. All the data is encrypted with Rijndael-256 algorithm.
Installation:
Type: make && make install
For solaris type: make solaris && make install
Usage:
Usage: icmpchat [OPTIONS] < host > < nick >
< host > = Host to chat with
< nick > = Your nickname
OPTIONS:
-t < type > = specify icmp type (default ECHO_REPLY)
Example: icmpchat 192.168.1.2 foo
ICMP codes:
[0] Echo Reply
[5] Redirect
[8] Echo Request
[9] Router advertisement
[10] Router solicitation
[13] Timestamp request
[14] Timestamp reply
[15] Information request
[16] Information reply
[17] Adressmask request
[18] Adressmask reply
Enhancements:
- Rewrote from scratch
- Implemented optimized rijndael algorithm
- Implemented sha256 for password hashing
- Implemented ncurses frontend (again)
- Fixed getuid problem so that setting suid flag works now (thanks John)

IoChatto is a chat client which you can use in the JXTA platform.

Its interface is similar to many IRC chat clients, but you can have presence information for every channel, and its design is fully decentralized.

XChatOSD is a Perl script for X-Chat which displays the messages recieved by X-Chat through the xosd library.
Enhancements:
- Added DCC chat messages support
- Added CTCP support
- Added automatic codepage chooser. Codepage setting is now deprecated.

QuickChat is a Firefox extension that is designed to allow you to chat about anything on any website with the users that are actively browsing that site.

And now, with more than 10,000+ users actively browsing with the extension and a lot more activity in chatting, this is actually worth downloading. Enjoy!

Naken Chat is a public chat server written in C (originally in Java). Naken Chat project allows multiple people to connect to it and talk simultaneously to each other or in private messages.
The goal of Naken Chat is to be as small and fast as possible using the least amount of your computers memory with the most amount of features. The current size of the Naken Chat binary on a Linux box is about 38k after being "stripped".
Ive fully tested this program on FreeBSD, Linux, Solaris, Windows 98 and XP, and MacOSX.
The Naken Chat server can be connected to through many different client programs including telnet, a Java applet, Windows clients, and J2ME Naken Chat Client for mobile phones.
Main features:
- Private channels created by anyone (with channel-ops)
- Channel locking to not allow unwanted visitors in
- Channel squelching to make annoying people in your channel shut up
- Gagging to make annoying users not be able to write to you
- Private messages
- User levels
- Idle users can be knocked offline after an idle period
- Channels are now optional
- Username/Password file so only known people can log in
- Beeps for when someone gets a private messages
- Private message highlighting
- Special Channels
- Main: The main channel.. can also be called channel 0
- Hidden caves: if you go to a channel that has a number and the number is between 1000 and 1999, the channel wont be listed when people type .w to see whos online. This feature is no longer compiled in by default.
- Site Banning
- Sysop (special power) functions
- Cross channel yelling so users in one channel can send a message to people in all the channels
- Hushing Yells so a user wont see any messages that were yelled
- If user types too much too fast they are bumped offline
- Internationalization (so Swedish/Norweigan/Hebrew/Arabic/etc. chars work)
- If you type: .w it will give you only that line number or .w would filter for that string
- Chat Logging
- Ability to hide IPs (for security)
- Sysop hiding
- Time stamping
- Many more features I cant remember at this time.