Open source Slack alternatives

Socket.IO C++

“Socket.IO also gives you things like cross-everything callbacks: // server io.emit('event', function (msg) { console.log('Client responded!', msg) }) // client io.on('event', function (cb) { cb('This is my response') }) And it also provides socket namespacing, and "rooms" (a bit…”

Socket.IO P2P

“SockJS is definitely a reasonable choice as a base. At Pusher we use a fork of SockJS for HTTP fallback but we actually use em-websocket [1] (ruby) for our WebSocket API. Given the opportunity we'd probably move away from SockJS to something much simpler because we only want the…”

Welcoming Rocket.Chat to Matrix

“Even if Rocket.Chat used the same E2EE scheme as Matrix, you would still have to re-encrypt, given the application-layer protocols are not the same. RC's messages are a blob of JSON which looks nothing like Matrix's JSON events. To preserve E2EE throughout you'd have to speak…”

Welcoming Rocket.Chat to Matrix

“True, although this is one step away from being a multihead messenger, effectively. It's just that the protocol-specific modules are daemons using a standard API rather than in-process. For instance, I can't think of a way that one would run an Element Web<->Rocket.Chat bridge…”

Launch HN: Chatwoot (YC W21) – Open-Source Alternative to Intercom, Zendesk

“Alex from Papercups here :) My guess is partially what vardaro mentioned (to hedge their bets), and partially because the space is really, really "wide" (not sure if that's the right word) in the sense that products like this could go in a million different directions... for…”

Launch HN: Chatwoot (YC W21) – Open-Source Alternative to Intercom, Zendesk

“Oh, wow. I used Chatwoot in the past, happily surprised you went through YC! I did have trouble self-hosting once, I think I had to enable task queues in my Heroku or something. I might've eventually switched over to the hosted option which was much easier. I would use Chatwoot…”

Show HN: AionUi – Open-Source Cowork for Claude Code, Gemini CLI, Codex and More

“Related: > CrewBench is built on top of AionUi (Apache-2.0) and inherits all upstream AionUi capabilities, while adding developer-focused observability and guardrails.”

[Bug]: can't login in .49

“### Module Other ### Platform Windows ### AionUi Version 2.1.49 ### Bug Description login link redirects to main site ### Steps to Reproduce open UI and press Login ### Expected Behavior Login succeeds ### Actual Behavior nothing, sometimes waiting for login, sometimes simple…”

Dropbox has open-sourced Zulip

“Thanks for using and contributing to GitLab! Although Zulip is far ahead of other open source solutions we are leaning towards Rocket Chat. Javascript and Meteor are the most popular language and framework so it would be easier to contribute. It is not who is ahead now but about…”

Dropbox has open-sourced Zulip

“Zulip can be hosted internally, and there is a desktop Linux client in addition to running fine in the usual zoo of Linux web browsers.”

GitHub open sources Hubot (chat bot)

“Hubot supports IRC too (though probably not as well, we only hop in when Campfire goes down). We depend on having a nice, customizable native Campfire client. We keep a custom js script in DropBox that Propane ( ) loads on startup. We've been able to modify the UI to show…”

GitHub open sources Hubot (chat bot)

“We're just shipping the foundation right now. A lot of our other stuff is tied to a substantial amount of other services (our CI, our special build layer, various other home-grown services, etc). Over time — and judging from Twitter, very quickly! —…”

Multiple errors when using GiftedChat with its FlashList dependency in Expo SDK 51

“When using the GiftedChat component, I'm encountering multiple errors related to its internal FlashList dependency. Environment: - Expo SDK: 51.0.28 - React Native: 0.74.1 - react-native-gifted-chat: 2.7.3 - @shopify/flash-list: ^1.7.3 - react-native-reanimated: ~3.10.1 -…”

Reply for Particular Message

“Hi There, How to Implement whatsapp type reply in react-native-gifted-chat... ![reply](”

You broke Discord's community guidelines

“### Version 2.46.1 ### Flavor CLI (Command-Line Interface) ### Platform Mac ### Export format HTML ### Steps to reproduce When running CLI - it works with a new auth token, but the next time I try - my account is blocked, and I have to reset my password, get a new auth token and…”

Render threads as part of the parent channel

“### Flavor _No response_ ### Export format _No response_ ### Details Discord recently unveiled Threads, and they are currently not exported when exporting a channel that has them”

account banned

“When using the library, the account is immediately banished How to avoid this? --- *(edit from @Lonami)* For everyone still coming here, see [my comment]( > Even official applications have these problems, not only libraries. Bans probably depend on a lot of factors, such as…”

cannot run the program

“hi, i tried to run the example, but i get an error: "ModuleNotFoundError: No module named 'telethon.tl.types'" how can i resolve that? thanks”

In 1973, I invented Baileys

“> We needed what they called an “Anglo-Irish” name. We were sure that a family name might be better than a “thing” or a place name. That was the popular convention of the business in those days. After all, many drinks were named after the people who made them. > We were still…”

In 1973, I invented Baileys

“If you mix it with, e.g., toffee Frijj[1], then you can't taste the Baileys at all. But you will wake up 36 hours later wondering what happened to your weekend and the rest of the Baileys. [1] Thick milkshake kind of stuff in the UK”

Vulnerability in the Mac Zoom client allows malicious websites to enable camera

“Your proposal is the closest thing to the best solution I have seen. It still has at least several issues: * When Zoom is already installed: - should be able to handle most instances - needs to account for version management, eg installed version zoom could still be version that…”

Vulnerability in the Mac Zoom client allows malicious websites to enable camera

“Those are some interesting points. I'm not convinced that versions should be in scope for this sort of thing though. If I'm writing a protocol handler, I think it's my responsibility to make sure my software can update itself, and make the default behavior that it should check…”

Monitoring Raspberry Pi Devices Using Telegraf, InfluxDB and Grafana

“InfluxData doesn't make money from Telegraf at all. It fills a need (data collection) that InfluxDB users have, so it helps them which helps us, but it also helps our competitors whose users also use Telegraf to collect data. The reason merges have been a problem is that…”

Monitoring Raspberry Pi Devices Using Telegraf, InfluxDB and Grafana

“SaaS version of that would be use Telegraf, but send data to Sumo Logic, Data Dog or other observability vendor. I would also You don't need to host InfluxDb and Grafana yourself. I would also consider gathering logs and traces to troubleshoot problems. Straightforward with top…”

[Bug]: Copilot attaches to side panel instead of text editor

“### Before Reporting - [X] I have checked FAQ, and there is no solution to my issue - [X] I have searched the existing issues, and there is no existing issue for my issue ### What happened? It appears Copilot for Xcode frequently attaches to the side panel instead of the text…”

[Bug]: real-time Suggestion do not working properly.

“### Before Reporting - [X] I have checked FAQ, and there is no solution to my issue - [X] I have searched the existing issues, and there is no existing issue for my issue ### What happened? The software enables real-time Suggestion. As the code was being written, a feature was…”

Support WhatsApp passkey flow when linking device with QR code or pairing code

“## Fixed - [x] **GOWS** - - - 2026.7.1 - GOWS - Passkey (WebAuthn) session pairing — pair sessions from your own UI - [How to Handle Passkey]( - [ ] **NOWEB** - - [ ] **WEBJS** - - [ ] **WPP** - ## Summary WhatsApp is now requiring a passkey flow when linking a device. WAHA…”

[gows] - Webhooks stop sending until session reconnect

“Describe the bug Since updating to version 2025.9.8, WAHA with the GoWS engine (paid tier) intermittently stops sending webhooks for both incoming and outgoing messages. At the same time, new messages also stop appearing in the dashboard, even though the session status remains…”

Other bridges ?

“If anyone wants to contribute code to support for a new bridge, feel free to open an issue about this. I'll be glad to help you where possible. ## Bridges supported - [x] Mattermost - [x] IRC - [x] Gitter - [x] Xmpp - [x] Slack - [x] Discord - [x] Hipchat (cheated by using xmpp…”

Frequent IRC disconnects

“**Describe the bug** The bridge is connected to one channel on Freenode and when there's stuff going on in the channel we can frequently see the bridge disconnecting. **To Reproduce** Steps to reproduce the behavior: * Let the bridge join a channel * Wait for stuff being…”

Spider venom kills varroa mites without harming honeybees

“Spider venom saving bees was not on my bingo card, but this is genuinely cool. Obviously "works on mites in the lab" is a long way from "works safely and cheaply in a real hive", but varroa is such a nasty problem that even a new direction is worth paying attention to”

Venom – A security vulnerability in virtual floppy drive code

“> require mass mobilization and mass education to fix Except that Crowdstrike is heavily involved in 'threat intelligence' so this isn't really about patching vulnerabilities at the technical level but educating non-technical executives on threats and 'threat actors'. So…”

TheLounge: Modern, responsive, cross-platform, self-hosted web IRC client

“Not OP but I can say that the times I have submitted a link to TheLounge were the times people would be saying {x} is better than IRC because it has chat persistence. TheLounge in private mode has chat persistence. I felt it was useful to share because in my opinion there should…”

TheLounge: Modern, responsive, cross-platform, self-hosted web IRC client

“TheLounge is a modern, responsive, cross-platform, self-hosted web IRC client. As IRC is slowly being adapted for the modern era of internet-based communication (see IRCv3), web-based applications are becoming more predominant in the space of client-side solutions. TheLounge is…”