Instant Messengers

Quicksy
Free • Open Source
Instant Messenger
Encrypted Chat App
Group Chat App
Android
34 alternatives to Quicksy
A spin-off of the popular Jabber/XMPP client Conversations with automatic contact discovery.
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Quicksy Features
1. End-to-End EncryptionQuicksy has E2E Encryption, for entire or parts of the app.
2. DecentralizedQuicksy is based on a decentralized infrastructure with no single entity controlling it.
Supports XMPP
Based on phone number
OMEMO
Xmpp
Secure Chat
Integrated File Sharing
Voice messages
Top 3 alternatives
Mirotalk
Free • Open Source
Group Chat App
Video Calling App
Instant Messenger
Online
Self-Hosted
37 alternatives to Mirotalk
Powered by WebRTC, Real-time video call, chat room and screen sharing entirely browser based.
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Mirotalk Features
1. Screen SharingYou can use Mirotalk to share your screen with your colleages or friends.
Voice Chat
Top 3 alternatives
Kopete
Free • Open Source
Instant Messenger
Mac
Linux
BSD
47 alternatives to Kopete
Kopete is an instant messenger supporting AIM, ICQ, Jabber, Gadu-Gadu, Novell GroupWise Messenger, and more. It is designed to be a flexible and extensible multi-protocol system suitable for personal and enterprise use.
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Kopete Features
Xmpp
Top 3 alternatives
Kik
Free • Proprietary
Instant Messenger
Group Chat App
Android
iPhone
Kindle Fire
88 alternatives to Kik
Kik is way more than just messaging. It’s the easiest way to connect with your friends, stay in the loop, and explore – all through chat. No phone numbers, just pick a username.
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Kik Features
Support for GIF
Chat Bot
Top 3 alternatives
Psi+
Free • Open Source
Instant Messenger
Video Calling App
Mac
Windows
Linux
BSD
44 alternatives to Psi+
Psi is a cross-platform powerful XMPP client designed for experienced users. Psi+ is a development branch of Psi with rolling release development model.

Users who wants to receive new features and bug fixes very quickly may use Psi+ on daily basis. Users who do not care about ne.
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Psi+ Features
1. VoiP CallsPsi+ allows you to make voice calls over Internet using the Voice over Internet Protocol (VoIP).
Xmpp
Support for Multiple protocols
OTR
Top 3 alternatives
Cinny
Free • Open Source
Instant Messenger
Online
9 alternatives to Cinny
Imagine a Matrix client… Where you can enjoy the conversation using simple, elegant and secure interface protected by e2ee with the power of open source.
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Cinny Features
1. Dark ModeCinny supports dark mode for comfortable usage in low light conditions.
2. End-to-End EncryptionCinny has E2E Encryption, for entire or parts of the app.
3. PortableCinny can be used from a USB stick or similar with no prior installation.
4. Support for MarkDownCinny supports MarkDown for document formatting.
5. Privacy focusedCinny is considered a privacy friendly alternative.
6. LightweightCinny consumes less device resources compared to similar apps.
7. No TrackingCinny will not track you or use your personal data.
Matrix Protocol
Top 3 alternatives
Dialog Messenger
Free Personal • Proprietary
Video Calling App
Instant Messenger
Encrypted Chat App
Online
205 alternatives to Dialog Messenger
Dialog Messenger is a customized self-hosted platform usable across multi operation systems simultaneously. dialog provides SDK tools for client interface as well as for server.
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Dialog Messenger Features
1. Real time collaborationMultiple users can work together in Dialog Messenger simultaneously.
Chat Bot
Team work
Reactions
Text chat
Voice Chat
Messaging-sdk
Top 3 alternatives
Miranda NG
Free • Open Source
Instant Messenger
IRC Client
Windows
PortableApps.com
24 alternatives to Miranda NG
Miranda New Generation is a successor of a popular multi-protocol instant messaging client for Windows - Miranda IM . Very light on system resources and extremely fast.
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Miranda NG Features
1. Extensible by Plugins/ExtensionsMiranda NG can be extended with add-ons, plugins and extensions.
2. PortableMiranda NG can be used from a USB stick or similar with no prior installation.
Support for Multiple protocols
Customizable
Multiple languages
Top 3 alternatives
Tinode
Free • Open Source
Instant Messenger
Group Chat App
Video Calling App
Online
Android
iPhone
Self-Hosted
Software as a Service (SaaS)
182 alternatives to Tinode
Fully open source instant messaging server and clients. No proprietary components or non-free dependencies. Backend in pure Go (GPL 3.0), with a command-line administration tool in python + gRPC. Clients for Android, iPhone, and Web - ReactJS (all licensed under Apache 2.0).
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Tinode Features
1. Ad-freeTinode doesn't contain any form of external advertising.
2. Support for MarkDownTinode supports MarkDown for document formatting.
3. Real time collaborationMultiple users can work together in Tinode simultaneously.
4. VoiP CallsTinode allows you to make voice calls over Internet using the Voice over Internet Protocol (VoIP).
5. Command line interfaceTinode either have CLI support or is a CLI-only app.
6. No TrackingTinode will not track you or use your personal data.
7. Dark ModeTinode supports dark mode for comfortable usage in low light conditions.
Telegram
React
Top 3 alternatives
Toxygen
Free • Open Source
Encrypted Chat App
Instant Messenger
Video Calling App
Windows
Linux
22 alternatives to Toxygen
Toxygen is powerful cross-platform Tox client written in pure Python3.
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Toxygen Features
1. VoiP CallsToxygen allows you to make voice calls over Internet using the Voice over Internet Protocol (VoIP).
Top 3 alternatives
Mesh
Free • Open Source
Encrypted Chat App
Instant Messenger
Windows
72 alternatives to Mesh
Technitium Mesh is a secure, anonymous, peer-to-peer (p2p), open source instant messenger designed to provide end-to-end encryption. Primary aim of developing this instant messenger is to provide privacy which is achieved using cryptography and anonymity using Tor network.
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Mesh Features
1. No registration requiredYou can use most of the features in Mesh without registration.
2. Privacy focusedMesh is considered a privacy friendly alternative.
3. PortableMesh can be used from a USB stick or similar with no prior installation.
4. DecentralizedMesh is based on a decentralized infrastructure with no single entity controlling it.
5. End-to-End EncryptionMesh has E2E Encryption, for entire or parts of the app.
6. AES-256 EncryptionMesh has AES-256 Encryption, i.e. very strong security.
Sync via TOR network
Integrated File Sharing
Multiple Profiles
Anonymous Chat
Peer-To-Peer
Top 3 alternatives
IM+
Freemium • Proprietary
Instant Messenger
Online
Windows Mobile
Android
iPhone
Java Mobile
Symbian S60
HP webOS
Blackberry
Android Tablet
Windows Phone
iPad
Kindle Fire
107 alternatives to IM+
Chat everywhere! IM+ is the most widely used mobile IM app! Connect all-in-one to MSN, Yahoo!, Google Talk, AIM, Jabber, ICQ, Facebook, MySpace and Twitter on ALL popular mobile platforms.

The widest selection of unique features that you won't find in any other IM client!.
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IM+ Features
1. Multiple Account supportIM+ support multiple accounts without the need to logout and login
Support for Multiple protocols
Top 3 alternatives
Cwtch
Free • Open Source
Instant Messenger
Encrypted Chat App
Group Chat App
Mac
Windows
Linux
Android
33 alternatives to Cwtch
Cwtch - (a Welsh word roughly translating to “a hug that creates a safe place”) is a decentralized, privacy-preserving, multi-party messaging protocol that can be used to build metadata resistant applications.
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Cwtch Features
1. DecentralizedCwtch is based on a decentralized infrastructure with no single entity controlling it.
2. End-to-End EncryptionCwtch has E2E Encryption, for entire or parts of the app.
3. Ad-freeCwtch doesn't contain any form of external advertising.
4. Self Destructing MessagesCwtch supports the use of private messages that will be auto deleted according to a specified time or action.
5. Privacy focusedCwtch is considered a privacy friendly alternative.
Tor
Peer-To-Peer
Anonymous Chat
Top 3 alternatives
Ekiga
Free • Open Source
Video Calling App
Instant Messenger
Windows
Linux
77 alternatives to Ekiga
Ekiga (formerly known as GnomeMeeting) is an open source SoftPhone, Video Conferencing and Instant Messenger application over the Internet. It supports HD sound quality and video up to DVD size and quality.
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Ekiga Features
1. PortableEkiga can be used from a USB stick or similar with no prior installation.
2. No registration requiredYou can use most of the features in Ekiga without registration.
SIP
Voice Chat
Video Conferencing
Discontinued
The project seems no longer developed. Last version, 4.0.1 stable and 5.0, released in 2013 and 2015, can be still downloaded from the official website
Top 3 alternatives
WeeChat
Free • Open Source
Instant Messenger
Mac
Linux
BSD
Haiku
Xfce
52 alternatives to WeeChat
WeeChat is a free chat client, fast and light, designed for many operating systems. It is highly customizable and extensible with scripts.
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WeeChat Features
1. Command line interfaceWeeChat either have CLI support or is a CLI-only app.
2. Extensible by Plugins/ExtensionsWeeChat can be extended with add-ons, plugins and extensions.
IRC
Modular System
Xmpp
Support for Multiple protocols
Top 3 alternatives

Quicksy Features

Top 3 alternatives

Mirotalk Features

Top 3 alternatives

Kopete Features

Top 3 alternatives

Kik Features

Top 3 alternatives

Psi+ Features

Top 3 alternatives

Cinny Features

Top 3 alternatives

Dialog Messenger Features

Top 3 alternatives

Miranda NG Features

Top 3 alternatives

Tinode Features

Top 3 alternatives

Toxygen Features

Top 3 alternatives

Mesh Features

Top 3 alternatives

IM+ Features

Top 3 alternatives

Cwtch Features

Top 3 alternatives

Ekiga Features

Top 3 alternatives

WeeChat Features

Top 3 alternatives