HipChat

Unison gives you secure "rooms", team spaces where you can post updates or files, get feedback and talk live as a group. Unison works from your smartphone, tablet, or computer. …

Instant messaging & Group Chat built for business. Features include: - Private Group Chat - Instant Messaging (one-on-one) - Persistent Searchable Chat History for Room & IM - Video Chat …

Make all your cloud apps work as one. Integrate Google Docs, Dropbox and others into one newsfeed and collaborate with team members. It’s free. Hojoki’s features: - integrate your favourite …

Cryptocat lets you instantly set up secure conversations. It's an open source encrypted, private alternative to other services such as Facebook chat. Messages are encrypted inside your own browser using...

Tlk2me is simple real-time messaging platform which is designed exclusively for groups. It is a web-based group chat tool that lets create chat rooms instantly. Invite a friend, client, colleague, …

Glip is your team’s collaboration platform to plan, share & organize work real-time. Enjoy unlimited text & video chat with a 60 free trial (no credit card required) and productivity …

Flowdock is a beautiful group chat. You can upload files, paste blocks of text, use #hashtags to make notes or create lists and mention others’ names to get their attention. …

Jaconda is designed as an easy-to-use company chat. It offers persistent chat rooms with searchable history, file sharing, guest access and more. It integrates with Jabber/Gtalk and can be used …

Echoplexus is an anonymous, web-based, IRC-like chatting platform that makes its best effort to respect your privacy. It allows you to create public or private channels. You can encrypt your …

A chat application built with ASP.NET and SignalR. Contribute to JabbR development by creating an account on GitHub.

Campfire is a simple web-based real-time group chat tool for business. It makes real-time communication with 2-60 people as simple as visisting a web page. It’s elegant, easy, and web-based. …

Disposable online chat. With anologue you can quickly and easily engage in an anonymous (or not) linear dialogue with any number of people (within reason). No accounts. No installations.

AnybodyOutThere helps individual users easily find other like-minded people to chat without first having to search through numerous forums and endless chatroom wastelands. The site connects users based on their …

MathIM is an online chat provider with built-in LaTeX support (that is, you can use LaTeX right away for providing help with math problems). It can also be used for …

Opensource Social Group Chat written in Ruby On Rails EchoWaves is a Collaboration Tool and a Social Network. EchoWaves is as powerful as CampFire, and as simple to use as …

Сервис Slack устраняет необходимость использования внутренней электронной почты для ведения делового общения. При этом сервис комбинирует возможности группового обмена сообщениями, передачи файлов, отправки уведомлений. Все эти функции доступны в рамках …

Free Group / Team chat with persistent history.

Chat, SMS, and share all of your files all in one place. Perzo is the secure and more productive solution to your communication needs. Perzo is a secure communication application …

Open Source private chat server. Your own private Chat server in minutes, plus additional features. No credit card required. A fast, secure and stable solution based on Rails.

YoFrog is mobile group chat with private rooms of friends. When texting is too limited and tweeting too public, make a space for you and your friends.

Microsoft Teams — корпоративная платформа, объединяющая в рабочем пространстве чат, встречи, заметки и вложения. Разработана компанией Microsoft как конкурент популярного корпоративного решения Slack.