Top 12 Open-Source Alternatives to Butter

Butter

Butter is a newly launched chatting application that focuses more on the privacy of its users.

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Product categories

AI APIs Appointments and Scheduling Audio Conferencing Brainstorming And Ideation Chat SDK Communication Group Chat & Notifications Messaging Productivity Project Management Team Collaboration

Summary

The top open-source alternatives to Butter are Notion, Habitica, and Signal. 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.

Notion Landing Page
1

Notion

All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Pricing:
- Open Source
#Productivity #Work Collaboration #Note Taking 439 social mentions
Habitica Landing Page
2

Habitica

Habitica is a free habit building and productivity application.
Pricing:
- Open Source
#Habit Building #Productivity #Todos 104 social mentions
Signal Landing Page
3

Signal

Fast, simple & secure messaging. Privacy that fits in your pocket.
Pricing:
- Open Source
#Communication #Group Chat & Notifications #Messaging 180 social mentions
Brainstormer Online Landing Page
4

Brainstormer Online

Online Idea Sharing and Collaboration Brainstorming Tool
Pricing:
- Open Source
- Freemium
- Free Trial
- $7.99 / Monthly (FACILITATOR Subscription )
#Brainstorming And Ideation #Team Collaboration #Productivity 1 social mentions
Zulip Landing Page
5

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
Twilio Landing Page
6

Twilio

Brings voice and messaging to your web and mobile applications.
Pricing:
- Open Source
#Communication #Cloud Communications #Customer Engagement
Flames Landing Page
7

F

Flames

Whiteboard Virtual Classroom For Teachers and Students
Pricing:
- Open Source
#Productivity #AI #Writing Tools
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
Cal.com Landing Page
9

Cal.com

Cal.com (formerly Calendso) is the open source Calendly alternative.
Pricing:
- Open Source
#APIs #Open Source #Calendar And Scheduling 53 social mentions
Now.app Landing Page
10

Now.app

Deploy to the cloud from your menubar
Pricing:
- Open Source
#Developer Tools #Messaging #Communication 13 social mentions
Hive Landing Page
11

Hive

Seamless project management and collaboration for your team.
Pricing:
- Open Source
- $12.0 / Monthly (Per user)
#Productivity #Project Management #Task Management 9 social mentions
Beam for reddit Landing Page
12

Beam for reddit

Discover and browse reddit on your iPhone
Pricing:
- Open Source
#Marketing #Reddit #Web App