#Communication systems

Open-source projects categorized as Communication systems | Edit details

Top 23 Communication system Open-Source Projects

  • GitHub repo Rocket.Chat

    The ultimate Free Open Source Solution for team communications.

    Project mention: If Signal and Discord had a baby. . . | reddit.com/r/privacy | 2021-05-10


  • GitHub repo Mattermost

    Open source Slack-alternative in Golang and React - Mattermost

    Project mention: Ask HN: Who is hiring? (May 2021) | news.ycombinator.com | 2021-05-03

    * Senior Product Marketing Manager

    Please submit your application here: https://mattermost.com/careers/ or send your resume to [email protected]

    To learn about all the ways to get involved with our community visit https://mattermost.com/contribute/

  • GitHub repo ZeroNet

    ZeroNet - Decentralized websites using Bitcoin crypto and BitTorrent network

    Project mention: what are some legal and/or harmless reasons to use a tor browser or any other darknet browser? | reddit.com/r/AskReddit | 2021-05-07

    For a list of these networks, there's: I2P, Freenet, Zeronet, Lokinet, and Yggdrasil.

  • GitHub repo Jitsi Meet

    Jitsi Meet - Secure, Simple and Scalable Video Conferences that you use as a standalone app or embed in your web application.

    Project mention: Cohort IDs can be collected over time to create cross-site tracking IDs | news.ycombinator.com | 2021-04-15

    There could actually be technical reasons behind it, for example Jitsi had this bug open for quite a while: https://github.com/jitsi/jitsi-meet/issues/4758 referring a few Firefox bugs - apparently mostly fixed by updates to Firefox; perhaps the vendors of your the web app you used didn't get the news yet.

  • GitHub repo Zulip

    Zulip server and webapp - powerful open source team chat

    Project mention: Zulip - Open Source group chat application | reddit.com/r/opensource | 2021-04-27
  • GitHub repo Flarum

    Simple forum software for building great communities.

    Project mention: [AskJS] What is the one npm package that changed your life? | reddit.com/r/javascript | 2021-03-25

    Mithril is pretty great, they're big lovers of it over at https://flarum.org/. I love being able to use it with JSX without all the complexities of React.

  • GitHub repo Postal

    📨 A fully featured open source mail delivery platform for incoming & outgoing e-mail

  • GitHub repo Mail-in-a-Box

    Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box.

    Project mention: Selfhosted E-Mail Server VPS specs | reddit.com/r/selfhosted | 2021-05-02

    I've been running mailinabox: https://mailinabox.email/ ... for at least 5 years for 7 domains, about 15 active users (plus a couple of dozen "system" accounts) on the smallest Digital Ocean droplet and have zero complaints.

  • GitHub repo Lets-Chat

    Self-hosted chat app for small teams

    Project mention: Looking for a good, compatible, simple to host chat program. | reddit.com/r/selfhosted | 2021-03-12

    If Let's Chat used PHP and MySQL, it'd be perfect, but it uses MongoDB, which I can't use, and even if I could use it, I don't know how I'd configure it.

  • GitHub repo chatwoot

    Open-source customer engagement suite, an alternative to Intercom, Zendesk, Salesforce Service Cloud etc. 🔥💬

    Project mention: Chatwoot: Open-source customer engagement suite | news.ycombinator.com | 2021-04-23
  • GitHub repo Tox

    The future of online communications.

    Project mention: Nice things to pair Brave with | reddit.com/r/brave_browser | 2021-05-10

    For Messaging: - Tox

  • GitHub repo Mailpile

    A free & open modern, fast email client with user-friendly encryption and privacy features

    Project mention: We need better open source e-mail clients! | reddit.com/r/privacytoolsIO | 2021-02-02

    Mailpile.is comes to mind. Their Twitter account is inactive since 2018, but they did fix some things on Github in November of 2020: https://github.com/mailpile/Mailpile/

  • GitHub repo Telescope

    🌋 A toolkit to quickly build apps with React, GraphQL & Meteor

    Project mention: How the State of JS/CSS Surveys Are Run | dev.to | 2021-03-24

    This app is itself based on a full-stack JavaScript framework I created, Vulcan.js. It works well enough for now, but in the future the app might need to be refactored in order to handle more surveys in parallel.

  • GitHub repo Synapse

    Synapse: Matrix reference homeserver

    Project mention: Flashlight discord | reddit.com/r/flashlight | 2021-05-10

    Do I need to join this too? Are there enough flashlight chat things now? Should I open a Matrix room?

  • GitHub repo Vector

    A glossy Matrix collaboration client for the web.

    Project mention: messaging apps and GrapheneOS | reddit.com/r/privacytoolsIO | 2021-05-11

    Element/Riot.im - The notification badges issue occurred sometimes where it indicated there were unread messages when there were none, but they only occurred on a friend's Huawei so not sure if that was an element issue or a Huawei issue. But I will note that unlike Signal and Wire which is always polling their respective servers for new messages, Element instead polls every 5-10 seconds (customizable) for new messages. It did not always auto-start on boot and I had to manually start it myself. One further thing to note is element stores all messages in the cloud but it is also end-to-end encrypted.

  • GitHub repo Gotify

    A simple server for sending and receiving messages in real-time per WebSocket. (Includes a sleek web-ui) (by gotify)

    Project mention: AreWeDown? a self-hosted alternative to uptime robot | reddit.com/r/selfhosted | 2021-05-10

    Can I suggest you add gotify as an integration? This way people won't have to configure email on multiple services.

  • GitHub repo HumHub

    HumHub - Open Source Social Network

    Project mention: HumHub – open-source Social Network | news.ycombinator.com | 2021-02-14
  • GitHub repo Tinode

    Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots

  • GitHub repo Lemmy

    🐀 Building a federated alternative to reddit in rust

    Project mention: Trump's Facebook ban upheld by Oversight Board | reddit.com/r/news | 2021-05-05

    Decentralized social media (like Mastodon for a fb/twitter-like, or Lemmy for a reddit-like)

  • GitHub repo Mailtrain

    Self hosted newsletter app

  • GitHub repo Listmonk

    High performance, self-hosted newsletter and mailing list manager with a modern dashboard. Single binary app.

    Project mention: Self hosted mailing list (like listmonk) | reddit.com/r/selfhosted | 2021-02-16

    listmonk author here. It records e-mail views and clicks (if it's turned on in Settings -> Privacy). Right now, this data is only shown as aggregate stats on the dashboard, but the next release will have a proper reporting page to view it in detail.

  • GitHub repo Isso

    a Disqus alternative

    Project mention: Blogging is a tough business | reddit.com/r/hnblogs | 2021-03-30

    You could host comments via https://posativ.org/isso/. But if you need a server anyway you could also just use a real blogging engine. Doesn't have to be wordpress - but something with comments, trackbacks and pingbacks should be the basics to have a chance.

  • GitHub repo The Lounge

    💬 Modern, responsive, cross-platform, self-hosted web IRC client

    Project mention: Any Word on PTP? | reddit.com/r/trackers | 2021-05-07

    You should look at TheLounge. Synchronizes your chat across devices :-)

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2021-05-11.


What are some of the best open-source Communication system projects? This list will help you:

Project Stars
1 Rocket.Chat 30,184
2 Mattermost 20,293
3 ZeroNet 16,740
4 Jitsi Meet 15,965
5 Zulip 13,441
6 Flarum 11,458
7 Postal 10,392
8 Mail-in-a-Box 10,102
9 Lets-Chat 9,475
10 chatwoot 9,075
11 Tox 8,655
12 Mailpile 8,396
13 Telescope 8,010
14 Synapse 7,786
15 Vector 6,574
16 Gotify 5,788
17 HumHub 5,374
18 Tinode 5,368
19 Lemmy 5,012
20 Mailtrain 4,696
21 Listmonk 4,631
22 Isso 4,359
23 The Lounge 4,338