Top 11 Open-Source Alternatives to Slack Platform

Product categories

Audio Conferencing CMS CRM Chat SDK Communication Customer Support Development Group Chat & Notifications Help Desk Productivity Project Management Task Management

Summary

The top open-source alternatives to Slack Platform are Drift, Chat by Stream, 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.

Drift Landing Page

1

Drift

A messaging app that helps you grow your business.

#Customer Support #Help Desk #CRM 1 social mentions
Chat by Stream Landing Page
2

Chat by Stream

Build and ship in app messaging in a few hours
Pricing:
- Open Source
#Communication #Chat SDK #Group Chat & Notifications 13 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
Zoho CRM Landing Page
4

Zoho CRM

Omnichannel CRM for Businesses of all sizes
Pricing:
- Freemium
- Free Trial
- $14.0 / Annually ($14 USD/monthly on Annual Subscription.)
#CRM #Productivity #CMS 1 social mentions
Basecamp Landing Page
5

Basecamp

A simple and elegant project management system.
Pricing:
- Paid
- Free Trial
- $99.0 / Monthly (flat price)
#Project Management #Productivity #Task Management 37 social mentions
Zulip Landing Page
6

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 50 social mentions
PubPub Landing Page
7

PubPub

Publish knowledge with your community.
Pricing:
- Open Source
#Communication #Productivity #Remote Work
MirrorFly Landing Page
8

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
Productivity Power Tools Landing Page
9

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 364 social mentions
NotePlan Landing Page
10

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 29 social mentions
Ring Landing Page
11

Ring

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