eBuddy

To use the web version of eBuddy, all you need is a Javascript enabled browser on your PC. You can access eBuddy from any computer or location and it even works behind a firewall. Whether you’re at school, home,  at the library or at work, surf over to eBuddy and login with your account to start chatting – it’s as easy as that!

imo.im is a web-based service that allows users to hold text, voice, and video chats on multiple instant messaging protocols. Currently supported protocols include AIM, Google Talk, ICQ, MSN, MySpace, Skype, and Yahoo Messenger. The service is free and requires no user-registration or sign-up.

Orgoo is an integrated communications platform where every tool you need to communicate and express yourself is organized and integrated together in one place online – all of your email accounts, IM accounts, social network updates, multi-user video chat, video mail, SMS, and more, working together to give you one seamless experience.

Free flash based chat rooms that do not require registration, just enter a nicname and start chatting! The free flash chat rooms are full of very interesting people from all over the world and is a fast growing fun community. The chat rooms have many features like private messaging, smilies, avatars, themes, sounds, file sharing, live streaming radio stations, upload a profile photo, ignore other users and you can even save all of your settings to your computer for when you return to the chat. One of most popular features is that you can create your own private chat rooms and make them password protected so only you and your friends can enter.

ChitChatting.Com – Free Chat Rooms without registration for Teenagers & Adults!

Free chat rooms including Teen Chat, General Chat or Adult Chat rooms. Pick an icon / avatar and talk or flirt with a friend. There are also links to online dating sites and other chat relateed websites.

321 Teen Chat – Free teen chat rooms for ages 13-19 

321 Teen Chat is quickly becoming one of the webs biggest teen chat rooms. Chat in chat lobby or create a public chat room of your own, the room you create can be about anything, from “school home room” to a “teen celebrity gossip”. Pick an icon /avatar to represent you while you chat and fill out a profile to let others know only a little about yourself.

Chatropolis – The #1 Online Adult Chat Community

Chatropolis is one of the largest most active chat sites on the Internet for chat rooms, cybersex, private chat and all types of chat.. You do not need any plugins or other hassles to chat at Chatropolis. Chatropolis Chat interface only requires an up to date browser. There currently are over 200++ chat rooms with topics from mild to wild. This chat site is not suitable for minors and some adults. If you are offended by images or chatting about adult topics such as SEX Then this is not the chat site for you.

ChatMaker.NET – Make your own chat room.

Chatmaker.net allows anybody to create free instant chat rooms without the need of registration. Chat for free with family and friends or members of your online community. ChatMaker also provides chat rooms for personal web sites, forums, blogs, news groups, online community sites, gaming networks, and dating channels.
Just enter a chat room name you like. A link will be provided to give to your chat partners and all can join to this chatroom.

Optichat.com – Browser based chat rooms for all ages. No registration required.

You’ll find all kinds of people to meet and chat with here. Have fun!

Monache Community – Flash based general chat with a range of differently themed rooms. Runs on the Userplane community platform. Registration optional.

Remember to stay safe and not give out personal information such as where you live or your phone number, not everyone is who they say. Please be respectful of other chatters, select an appropriate nickname to use in the chat room, do not use your real name.

Read also: Сhat etiquette: the do’s and don’ts of on-line conversation! and Tips for Chatting Safely

Notifu

Talkinator doesn’t ask, require or even want your personal information – however, rooms are only as confidential as you keep them. No messages are encrypted and its hypothetically possible for someone to guess the name of your talkinator chat room.

DO NOT give anyone your personal information in chat room. Its totally insecure. Anything you type in a talkinator room could be seen by any person. Keep that in mind.

Talkinator

radiusIM is Social IM. It’s the only website that shows you where your friends are hanging out and lets you surf for other people based on geographic location. Your friends will show up on the friends list as icons on a map.  It supports all the major networks: MSN, AIM/ICQ, Yahoo, and GTalk/Jabber. And you can use radiusIM from anywhere because there are no downloads.

SNIMMER is a chat site and a social network. You can chat in a group with all of your friends at once or chat individually via Web IM or regular IM. Through Snimmer you can chat on MSN, Yahoo, AOL, ICQ and Google. You can also create your profile, add your photos, chat with your friends, make new friends, connect and have fun!

Easy Messenger - free instant messenger service that runs right from your web browser. Combine your MSN, ICQ, AIM, Yahoo! and Jabber contacts into one solution. Now you can use your instant messenger at school, work or just at home without having to install software.
With the build-in RSS reader you are always up-to-date with your favorite RSS feeds.

The Google Talk gadget is a free web-based application with some fun features for communicating in real time.
Instant messaging — Chat with all of your Google Talk and Gmail contacts in real time.
No download required — Start chatting immediately from any computer.
Group chat — Invite multiple people to chat with you in a group. Learn more
Media previews — Cut and paste video and slideshow URLs from YouTube, Google Video, Picasa Web Albums and Flickr into your chats and view them in your chat window. Learn more
Add to iGoogle — You can add the Google Talk gadget to your iGoogle homepage to put chat alongside other useful and entertaining gadgets.
Add to your own webpage — Just cut and paste this code into your own webpage or blog to embed the Google Talk gadget.

AIM Express is the web-based version of the popular AOL instant messenger.  Send IMs to your friends without installing any software. The AIM Express® service is convenient whenever you’re away from your home computer: at school, the office, or a friend’s house.  Talk to your friends from any computer with a Web browser and access to the Internet. You can chat at work. You can chat at school. Productivity is overrated. Bring all of your buddies into one conversation.  Keep tabs on what all your friends are doing with just one click. You never know what they might be saying…

Mabber developed a mobile application that lets you chat and send messages wherever you are. Required is a recent mobile phone equipped with Java and some sort of data-plan.
No installation required, easy to use at school and at work – mabber runs in your browser.
Jabber-compliant, just use a messenger like Spark, Pandion or Psi if you prefer standalone programs.
Chat with your friends at ICQ, MSN, AIM, Google Talk, GMX messenger and others.
Use it on your mobile phone
Put it on your website
Stay up-to-date with mabber Alerts

Messenger FX is a web-based service that lets you access the MSN instant messaging network without having to install anything on your computer. The access is protected through encryption and the interface is available in multiple languages. There is no possibility to talk to contacts that are on other IM networks. Free to use.

Free video chat. No cost. No prepaid minutes. Really free.
No downloads. Talk through your browser. No chat client needed.
Any website. Embeddable on all websites and social networks.
Privacy control. You control who can see you and who can’t.

 Tokbox

Eyejot

AirTalkr

meebo.com

The web-based Yahoo Messenger is probably the most powerful rival for the famous Meebo or other similar services like Ebuddy.