Top 10 Open-Source Alternatives to Slack Platform

Slack Platform

Helping you build for your team or millions of SlackHQ users

9 mentions

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Product categories

Audio Conferencing Business & Commerce CRM Chat SDK Communication Design Collaboration Group Chat & Notifications Note Taking Productivity Project Management Task Management Work Collaboration

Summary

The top open-source alternatives to Slack Platform are Chat by Stream, Notion, and Flow. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Chat by Stream Landing Page
1

Chat by Stream

Build and ship in app messaging in a few hours
Pricing:
- Open Source
#Communication #Chat SDK #Prototyping 13 social mentions
Notion Landing Page
2

Notion

All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Pricing:
- Open Source
#Productivity #Work Collaboration #Note Taking 438 social mentions
Flow Landing Page
3

Flow

Stop managing projects from your inbox.
Pricing:
- Open Source
#Project Management #Task Management #Work Collaboration 1 social mentions
Zulip Landing Page
4

Zulip

Chat for distributed teams. Zulip combines the immediacy of real-time chat with an email threading model. With Zulip, you can catch up on important conversations while ignoring irrelevant ones.
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Messaging 54 social mentions
PubPub Landing Page
5

PubPub

Publish knowledge with your community.
Pricing:
- Open Source
#Communication #Productivity #Remote Work
MirrorFly Landing Page
6

MirrorFly

World's Most Scalable Voice, Video & Chat SDK for Small, Medium & Enterprises
Pricing:
- Open Source
- Paid
- Free Trial
#Communication #Chat SDK #Group Chat & Notifications 8 user reviews
OpenPapyrus Landing Page
7

OpenPapyrus

The enterprise management system OpenPapyrus
Pricing:
- Open Source
#CRM #Sales #Business & Commerce
Productivity Power Tools Landing Page
8

Productivity Power Tools

Extension for Visual Studio - A set of extensions to Visual Studio 2012 Professional (and above) which improves developer productivity.
Pricing:
- Open Source
#Regular Expressions #Programming Tools #Development 372 social mentions
NotePlan Landing Page
9

NotePlan

Make plans inside an individual markdown note for every day in your calendar. Use it as a journal for your daily tasks and plan todos in advance. For Mac, iPhone and iPad.
Pricing:
- Open Source
#Note Taking #Productivity #Todos 31 social mentions
Ring Landing Page
10

Ring

Ring is a secure and distributed voice, video and chat communication platform that requires no...
Pricing:
- Open Source
#Productivity #Mac #IoT