Alternatives to Plumm for all platforms with any license

Thunderbird

Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox.

Free Open Source Mac Windows Linux BSD PortableApps.com ... Haiku
Extensible by Plugins/Extensions Support for IMAP Built-in RSS reader Encryption ... SMTP integration Add-ons Calendar integration Extensions Multiple Account support Protected by Password Tabs Built-in Calendar Categories Customizable Delivery reports Desktop interface Extensible by Plugins/Extensions Free API Gmail integration Google Calendar integration Import from Google Reader Gui HTML Compose Integrated Chat Integrated Password Manager Integrated Web Browser Intuitive Legacy addons support Export to OPML Import feeds from OPML Organize mails POP3 Support Portable Secure File Sharing Support for POP3 Tabbed interface Support for Themes Add a feature

2014 Like
Discord

Discord is about giving people the power to create belonging in their lives. We want to make it easier for you to talk regularly with the people you care about. We want...

Freemium $ $ $ Mac Windows Linux Web Android ... iPhone Chrome OS BSD iPad Electron / Atom Shell FreeBSD
Voice Call Ad-free Group chat Chat Bot ... Share your screen Text chat Video calling Voice chat Push to talk Video chat Multi Channel Public groups chat Social & Communications Bots Custom roles Direct Messaging Encrypted chat Group Voice Chat Low Latency Multiple Servers Reactions Share content Text to Speech Voice channels Camera capturing Channel manager Community based Custom Smileys Dedicated Server Hosting Development API Electron based Gaming-focused Gui Group Messaging In-app server browser In-Game Overlay Integrated Chat Integrated File Sharing Interface Overlay Lightweight Low bandwidth usage Low memory usage Multi-platform support Night mode/Dark Theme Noise Reduction Permission system Persistent Chat Photo Sharing Positional audio Responsive design Role-based security access Share your screen Single Sign-On Team Collaboration Voice chat Webcam overlays Youtube Gaming Integration Add a feature

732 Like
Slack

Real-time messaging, archiving and search for modern teams to stay focused and productive.

Freemium $ $ $ Mac Windows Linux Android iPhone ... Chrome OS Android Tablet iPad Electron / Atom Shell Software as a Service (SaaS)
Group chat Group collaboration Multi Channel Team Collaboration ... Extensible by Plugins/Extensions Channels Electron based Support for @mentions App integration Channel manager Direct file uploading HIPAA compliant IFTTT integration Integrated File Sharing Live Push Notifications Multiple channels Multiple teams Onboarding Out Of The Box Reactions Real time collaboration Team work Video calling Video chat Voice Call Add a feature

763 Like
Riot.im

A free instant messaging and collaboration software based on the Matrix protocol.

Free Open Source Mac Windows Linux Web Android ... iPhone Android Tablet iPad Self-Hosted Matrix.org Cloudron
End-to-End Encryption Decentralized Security & Privacy Group chat ... Team Collaboration Federated Federation Privacy-friendly Video chat Video calling Voice Call Add-ons Clean design Custom widgets Direct Messaging Encrypted chat Group collaboration Matrix.org protocol Message redaction Mobile friendly Moderation tools Per-room avatars Privacy focused Read receipts Text chat Typing notifications User Management User mentions Video/Audio Calling Voice chat Web Integaration Active Directory integration Chat Bot Community based Cross-platform DRM Free GitHub integration Integrated File Sharing LDAP support Live Chat MarkDown support Real time collaboration File Sending Server Moderation Server side history Slack integration Social network Video calling Video Conferencing Voice chat Web-Based Add a feature

331 Like
Hangouts

Hangouts is a messaging app that lets you send and receive messages, photos and more, and even start free video and voice calls – one to one or with a group! ...

Free Windows Web Android iPhone Chrome OS ... Android Tablet iPad Chrome Android Wear
Video calling Share your screen Gmail integration Group chat ... Multi Device Support Sms from PC Video Conferencing Multi-platform support Share your screen SMS Messaging Supports archiving conversations Video chat Voice Call Voice messages WebRTC Add a feature

1017 Like
Wire

Wire is the most secure collaboration platform featuring messenger, voice, video, conference calls, file-sharing, and external collaboration –all protected by the most...

Freemium Open Source Mac Windows Linux Web Android ... iPhone Android Tablet iPad Self-Hosted Software as a Service (SaaS)
End-to-End Encryption Security focused Encrypted chat Video calling ... Voice Call Encrypted calls Encryption Group chat Share your screen Security & Privacy Anonymity Integrated File Sharing Multiple Account support Photo Sharing Privacy focused Privacy Protected Private Chat Secure Chat Secure File Sharing File Sending Video calling Video chat Voice chat Voice messages WebRTC Add a feature

245 Like
Jitsi

Jitsi (previously SIP Communicator) is an audio/video and chat communicator with full encryption that supports protocols such as SIP, XMPP/Jabber, ICQ/AIM, Windows Live...

Free Open Source Mac Windows Linux Web Android ... iPhone Android Tablet BSD iPad
SIP Video Conferencing Security & Privacy Support for Multiple protocols ... Privacy-friendly Browser based Chat Cross-platform Desktop Sharing End-to-End Encryption File sharing Group chat iPhone/iPod sync Live Meeting Multiple Account support No download No installation required No Login Required OTR Plugins Privacy focused Share your screen SIP SIP client Softphone Unlimited users Video calling Video chat Video Conferencing Voice chat WebRTC Xmpp Add a feature

378 Like
Matrix.org

Matrix defines a set of open APIs for decentralised communication, suitable for securely publishing, persisting and subscribing to data over a global open federation of...

Free Open Source Mac Windows Linux Web Android ... iPhone Android Tablet iPad Self-Hosted WebRTC Python JavaScript Go (Programming Language) Cloudron Java Perl
Federation End-to-End Encryption Chat Decentralized ... Random video chat Voice chat Chat Bot Distributed Encrypted chat Group chat Messaging Real time collaboration Server side history Team Collaboration Voice Call WebRTC Add a feature

159 Like
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Mattermost

Mattermost is an open source, self-hosted Slack alternative. As an alternative to proprietary SaaS messaging, Mattermost brings...

Freemium $ $ $ Open Source Mac Windows Linux Android iPhone ... Android Tablet iPad Self-Hosted JavaScript Go (Programming Language) Cloudron
Group chat Team Collaboration On-premises software Self-hosted in intranet or private cloud ... Chat Bot Data API Integrated File Sharing MarkDown support Multi Channel Plugin API Plugins File Sending Slack integration Supports XMPP Webhook support Add a feature

190 Like
Keybase

Keybase is a new and free security app for mobile phones and computers. For the geeks among us: it's open source and powered by public-key cryptography. Keybase...

Free Open Source Mac Windows Linux Web Android ... iPhone Ruby JavaScript Go (Programming Language) Java
End-to-End Encryption Git integration Data-encryption Encrypted backups ... Encrypted chat Encryption Security focused Self destructing messages Team Collaboration Two-Step verification Ad-free Drive Encryption Electron based Facebook integration GitHub integration Java PGP Encryption Private repositories Public key encryption Ruby Social network Twitter integration Add a feature

81 Like

Plumm Comments

Echo echo ... Feels empty in here

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Plumm

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Alternatives to Plumm for all platforms with any license

Thunderbird

Discord

Slack

Riot.im

Hangouts

Wire

Jitsi

Matrix.org

Know any more alternatives to Plumm?

Mattermost

Keybase

Platforms

License

Plumm Comments

Echo echo ... Feels empty in here