ZeroChat!

You will need version 4 or higher of `firefox` https://www.mozilla.org/firefox
to run Pencil as a Firefox Extension. Linux users will need version 4 or higher of either `firefox`, `iceweasel` or `xulrunner` https://developer.mozilla.org/en-US/docs/Mozilla/Projects/XULRunner,
or version 25 or higher of `palemoon` https://www.palemoon.org/.
The Windows installer and OS X archive has everything you need built-in. Windows, Linux, OS X & Firefox Packages are available for download from the Releases Page https://github.com/prikhi/pencil/releases.
You can also install the Firefox Add-on from the Mozilla Add-on Repository https://addons.mozilla.org/en-US/firefox/addon/pencil-prototyping/.
To install the OS X package, unzip the archive and copy the `Pencil.app` folder t

ZeroChat alternatives

  • Skype

  • Skype is the most popular free voice-over IP and instant messaging service globally. It allows users to text, video and voice call over the internet. Users can also call landlines and mobiles at competitive rates using Skype credit, premium accounts and subscriptions.

    tags: chat-clients exchange-integration ifttt-integration instant-messaging instant-messengers
    platform: Mac OS X Windows Linux Online Android iPhone Blackberry Chrome OS Windows RT Android Tablet BSD Windows Phone iPad Apple Watch Android Wear PortableApps.com
  • Slack

  • Slack brings all your communication together in one place. It’s real-time messaging, archiving and search for modern teams.

    tags: app-integration channel-management channels chat-clients chat-rooms
    platform: Mac OS X Windows Linux Online Android iPhone BSD Apple Watch Electron / Atom Shell
  • Pidgin

  • Pidgin is an easy to use, multi-protocol chat client client used by millions. Connect to AIM, MSN, Yahoo, XMPP, and more chat networks all at once. It has built-in support for NSS, offering client-to-server message encryption for protocols that support it. The program is extendable through plugins, including "Off-the-Record Messaging" and Pidgin encryption, providing end-to-end message encryption.

    tags: Portable aim chat-clients extensible gadu-gadu
    platform: Mac OS X Windows Linux BSD PortableApps.com Xfce
  • Jitsi

  • Jitsi (previously SIP Communicator) is an audio/video and chat communicator with full end-to-end encryption that supports protocols such as SIP, XMPP/Jabber, ICQ/AIM, Windows Live, Yahoo!, GTalk/Hangouts extensions, as well as OTR, ZRTP, etc.It can handle every firewall, and has many other useful features.

    tags: aim-clients audio-conferencing chat-clients desktop-sharing end-to-end-encryption
    platform: Mac OS X Windows Linux Online Android BSD
  • HexChat

  • HexChat is an IRC client based on XChat for Linux , but unlike XChat it’s completely free for both Windows and Unix-like systems.HexChat was originally called XChat-WDK which in turn was a successor of freakschat.

    tags: Portable chat-clients irc irc-client xchat
    platform: Windows Linux BSD PortableApps.com Xfce MacPorts XQuartz
  • Mattermost

  • Mattermost is an open source, self-hosted Slack alternative.

    tags: access-from-everywhere chat-rooms data-api go-lang group-chat
    platform: Mac OS X Windows Linux Android iPhone Android Tablet iPad Self-Hosted JavaScript Go (Programming Language) Cloudron
  • Matrix.org

  • Matrix.org is a growing ecosystem for open, decentralised chat, VoIP and IoT communication.

    tags: chat-bot chat-clients communications decentralized distributed
    platform: Mac OS X Windows Linux Online Android iPhone Android Tablet iPad Self-Hosted WebRTC Python JavaScript Go (Programming Language) Java Perl
  • Rocket.Chat

  • Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.

    tags: ad-free channels chat-bot chat-rooms chat-servers
    platform: Mac OS X Windows Linux Android iPhone Self-Hosted Cloudron
  • HipChat

  • HipChat is an instant messaging service designed for companies and teams. It has persistent chat rooms, one-to-one chat, searchable chat history, file sharing via drag & drop and clipboard, inline image previews, an API, chat over SMS, and more.

    tags: chat-clients chat-rooms corporate-instant-messaging enterprise-social-networking instant-messaging
    platform: Mac OS X Windows Linux Online Android iPhone Android Tablet iPad Self-Hosted Apple Watch
  • mIRC

  • mIRC is a popular Internet Relay Chat client used by millions of people, and thousands of organizations, to communicate, share, play and work with each other on IRC networks around the world. Serving the Internet community for over a decade, mIRC has evolved into a powerful, reliable and fun piece of technology.

    tags: chat-clients colored-text irc social-applications
    platform: Windows
  • Let's Chat

  • Self-hosted chat for small teams.

    tags: chat-clients chat-rooms chat-servers team-collaboration web-interface
    platform: Self-Hosted Cloudron
  • irssi

  • Irssi is a terminal based IRC client for UNIX systems. It also supports SILC and ICB protocols via plugins.

    tags: chat-clients irc-client silc xfce
    platform: Mac OS X Windows Linux BSD Cygwin
  • Quassel IRC

  • Quassel IRC is a modern, cross-platform, distributed IRC client based on the Qt4 framework. Distributed means that one (or multiple) client(s) can attach to and detach from a central core that stays permanently online -- much like the popular combination of screen and a text-based IRC client such as WeeChat, and similar to (but much more featureful than) so-called BNCs.

    tags: chat-clients irc irc-client
    platform: Mac OS X Windows Linux Self-Hosted
  • XChat for Linux

  • XChat is an IRC chat program for both Linux (Open Source) and Windows (Shareware, 30-day trial). It allows you to join multiple IRC channels (chat rooms) at the same time, talk publicly, private one-on-one conversations etc. Even file transfers are possible.

    tags: Discontinued chat-clients irc irc-client social-applications
    platform: Windows Linux Discontinued
  • Hack Chat

  • hack.chat is a minimal, distraction-free chat application.Channels are created and joined by going to https://hack.chat/?your-channel . There are no channel lists, so a secret channel name can be used for private discussions.

    tags: chat-clients chat-servers
    platform: Online Android Self-Hosted