16 recommended

5
Mattermost

Open source, on-premises, Slack alternative

Kunal Bhatia22Co-founder & Design Lead @SlidesUp · Written
I actually enjoy using Mattermost. We are using it for YC Startup School in the Founder's Track. It's free and they're actively developing it.
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Marco GrafFounder, travel enthusiast · Written
An open source Slack alternative..
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6
HipChat 2.0

Group chat and IM built for teams.

Nichole Elizabeth DeMeré3Moderator at Product Hunt · Written
HipChat is group chat built for teams & business. Free for unlimited users, enjoy unlimited group chat, video chat & screen sharing.
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5
Azendoo

Teamwork made easy, Get Sh!t Done without email

Nichole Elizabeth DeMeré3Moderator at Product Hunt · Written
Online Collaboration app for teams. Azendoo helps you organize your work, plan team projects, share documents and sync with your team, outside of email.
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Nichole Elizabeth DeMeré3Moderator at Product Hunt · Written
Bitrix24 is a complete suite of social collaboration, communication and management tools for your team.
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Enterprising Josh made this product
Bitirix24 is the best Slack alternative - free unlimited uses, no stupid history search limits, great project management features (tasks, subtasks, gantt, time tracking)
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2
Microsoft Teams

Microsoft's Slack competitor

Nichole Elizabeth DeMeré3Moderator at Product Hunt · Written
See content and chat history anytime in team chat or in private chat. Schedule small group or team meetings. Post an email in the thread to keep the team in the loop. Search for public teams to collaborate on shared projects.
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Ashik NesinJS Developer @ NFNLabs · Written
All-in-one voice and text chat :)
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2
Flock Chat

A feature for feature competitor for Slack
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3
Basecamp 3

Lizaveta SalianikCustomer Care Manager, Dream Support · Written
Basecamp is incredible for company's management and communication when everyone works from home. Not only are there Campfires for communications, you can also create teams, who are in charge of different projects, post to-dos and ! there is no need to hold daily meetings - you can just use the Automatic check-ins feature for that and stay on track with everyone. Highly recommended:)
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RozBahramiDigital Media Manager, Skyprep · Written
Similar to Slack but with content coming first them messaging being attached to each piece of content so nothing is ever lost in an endless stream of chat-threads.
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2
Rocket.Chat

Your own open source Slack-like chat

Open source alternative to Slack
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1
eXo Platform

Nichole Elizabeth DeMeré3Moderator at Product Hunt · Written
eXo Platform, a digital collaboration platform for business portals and social intranets, provides collaborative solutions to enhance productivity and teamwork.
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1
Fleep

Team communication from a team of Ex-Skypers

Nichole Elizabeth DeMeré3Moderator at Product Hunt · Written
Fleep messenger enables communication within and across organizations - be it your team chats, project communication or 1:1 conversations.
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1
Moxtra

A powerful team collaboration and communication tool

Nichole Elizabeth DeMeré3Moderator at Product Hunt · Written
Moxtra is the collaboration companion that works the way teams do: flexibly and simply, in real-time or anytime. Your iPhone/iPad/iPod has changed how, when, and where you work. And now you can take Moxtra with you to work faster and more productively. With the Moxtra app, you can switch from "What do you think about this?" to "Let’s meet and decide right now!" with a single click.
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Nichole Elizabeth DeMeré3Moderator at Product Hunt · Written
Ryver streams together all your messages, notes, and discussions to improve productivity and deepen relationships.
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Phil RenCEO, Mingdao.com · Written
This product is still Chinese centric, but soon to expand as multi language. It is an equivalent to slack+trello+dropbox, which are the most essential collaboration apps for any team. The enterprise version sold in China costs only $3 dollars per user.month, as its US alternatives cost more than $45 easily. The product still needs to add lots of international products integrations before it serves US customers need set.
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1
ChatGrape

Chat that autocompletes your company data while typing

A good alternative to Slack
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