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Slack
Slack

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Zulip
Zulip

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+ 1
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Slack vs Zulip: What are the differences?

Developers describe Slack as "Bring all your communication together in one place". Imagine all your team communication in one place, instantly searchable, available wherever you go. That’s Slack. All your messages. All your files. And everything from Twitter, Dropbox, Google Docs, Asana, Trello, GitHub and dozens of other services. All together. On the other hand, Zulip is detailed as "Powerful open source team chat". Zulip is powerful, open source team chat that combines the immediacy of real-time chat with the productivity benefits of threaded conversations Zulip allows busy managers and others in meetings all day to participate in their teams chats..

Slack and Zulip can be primarily classified as "Group Chat & Notifications" tools.

"Easy to integrate with" is the primary reason why developers consider Slack over the competitors, whereas "Open source" was stated as the key factor in picking Zulip.

Zulip is an open source tool with 10.1K GitHub stars and 3.11K GitHub forks. Here's a link to Zulip's open source repository on GitHub.

Airbnb, Dropbox, and Medium are some of the popular companies that use Slack, whereas Zulip is used by Solano Labs, Weight Measuring Company «Tenso-M», and Leonis Holding. Slack has a broader approval, being mentioned in 4795 company stacks & 3481 developers stacks; compared to Zulip, which is listed in 7 company stacks and 9 developer stacks.

- No public GitHub repository available -

What is Slack?

Imagine all your team communication in one place, instantly searchable, available wherever you go. That’s Slack. All your messages. All your files. And everything from Twitter, Dropbox, Google Docs, Asana, Trello, GitHub and dozens of other services. All together.

What is Zulip?

Zulip is powerful, open source team chat that combines the immediacy of real-time chat with the productivity benefits of threaded conversations. Zulip allows busy managers and others in meetings all day to participate in their teams chats.
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    What are some alternatives to Slack and Zulip?
    Microsoft Teams
    See content and chat history anytime, including team chats with Skype that are visible to the whole team. Private group chats are available for smaller group conversations.
    Discord
    Discord is a modern free voice & text chat app for groups of gamers. Our resilient Erlang backend running on the cloud has built in DDoS protection with automatic server failover.
    Trello
    Trello is a collaboration tool that organizes your projects into boards. In one glance, Trello tells you what's being worked on, who's working on what, and where something is in a process.
    Skype
    Skype’s text, voice and video make it simple to share experiences with the people that matter to you, wherever they are.
    Asana
    Asana is the easiest way for teams to track their work. From tasks and projects to conversations and dashboards, Asana enables teams to move work from start to finish--and get results. Available at asana.com and on iOS & Android.
    See all alternatives
    Decisions about Slack and Zulip
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    Interest over time
    Reviews of Slack and Zulip
    Review ofSlackSlack

    Today the impossible happened, our beloved Slack crashed sending chaos into offices around the globe. “Wow, how am I now going to vote for the flavour of our new office candy???”, I thought. But even though it might not have felt like it, everything else around us was still working: the world was still spinning, South Korea was winning over Germany at the World Cup, and today’s quotas and goals had to be met. In these situations, people most often turn towards traditional messaging tools like messenger, WhatsApp or email and hope for the best — that Slack will be back up soon. However, these temporary remedies are not without their complications: undelivered messages that you thought were read, lost documents, mental breakdowns, wasted time, etc.… In general, for us it creates a problematic gap in our office chat history.

    But what if I told you that these crashes could potentially never occur again?

    Yes, this is real life, and it’s exactly what mesh technology is about so we are going to explain it. In this scenario, if Slack ran with mesh networks, its users would not have been affected by its current technology’s single point of failure, which in this case was the crash of the server.

    Lol okay, how is this possible bc this is real life???

    Mesh networks might not sound familiar to everyone so let’s compare it with other well-known networking topologies. Consider a Local Area Network (LAN), where devices are connected to a central access point (imagine it like a star with the central access point in the middle and the devices located at the ends). Be it LAN or wifi, the idea is the same, so when I send a message on Slack, it first arrives at the Slack server (the central access point) and from there it is sent to the recipient.

    In mesh networks, devices are directly connected to each other. They form a local network using existing connectivity technologies such as Bluetooth or Wi-Fi as “connectors”. Devices can act as “routers” and forward messages and files to others, enabling the content to hop between them until it reaches a destination. This eliminates the need for a central entity.

    Let’s apply this concept to today’s crisis. If slack ran on top of mesh networks, their consumers would still be able to communicate and send files even though they were not connected to the crashed server. Once it was up and running again, all their group conversations which would have taken place during the outrage would be uploaded back to Slack’s server once they were back online.

    Honestly, it’s that simple. To Slack, it would not only be convenient for its customers in situations like these (because we would never have Slack crashes), it would also considerably reduce their own infrastructure costs and prevent them from having moments that they might find embarrassing.

    So slack, if you see that mesh networks could potentially help you, come talk to us.

    HypeLabs https://hypelabs.io

    Avatar of sergiotapia
    Senior Software Engineer
    Review ofSlackSlack

    Slack is gorgeous and runs on multiple platforms - that's benefit #1. You can easily talk on your iMac then switch to your Android device on the fly.

    The one thing I don't really like about it is how it handles multiple organization accounts.

    I am a software consultant so I typically work with multiple teams over the months and it's odd to 'log into the right account'. It's not intuitive at all.

    I would like there to be a way for users to easily pick a 'Persona' and not accidentally post to the wrong company.

    Review ofSlackSlack

    Slack filled a very complicated role and did it elegantly.

    Its very well designed and easy to use. Adding integrations can be complicated but their documentation with images makes it very easy.

    Also I contacted support and get a relevant answer quickly!

    All this on the free plan, you better bet we will be upgrading soon.

    Review ofZulipZulip

    Zulip is a great open source real-time chat solution with good integrations. The documentation is really well made and it's available for on-premise deployment which is a great plus.

    Review ofZulipZulip

    zulip is the best softwre develpoment method. They do many things for beginner programmers. It is really good.

    Avatar of vamseev
    Product Manager at StackShare
    Review ofSlackSlack

    Internal Communications made easy

    How developers use Slack and Zulip
    Avatar of StackShare
    StackShare uses SlackSlack

    I first heard about Slack from my friend Matt (shout out to Final!). He was helping me out with some Rails issues so we started using Slack and I liked it. Specifically, the chat interaction. But also all the integrations. I wasn’t thinking of it as a tool to end all tools at first, just a chat tool with some cool integrations. Then I created a Slack account for StackShare, and that’s when things got real.

    Sentry got easier to stay on top of, Heroku was easier to see activity from, discussions were more fluid, and the mobile app was killer. Most of the tools I use either don’t have a mobile app or have shitty ones. Slack is like a replacement for all the mobile apps my tools should have.

    I don’t find Slack particularly useful for focused discussions, so I doubt it will replace email anytime soon for us. Things like product discussions/debates are best via email. It forces you to think before you type and have a clear back and forth with someone.

    Small gripe: I wish Slack would disable email notifications by default, I still haven’t figured out how to turn those off.

    Avatar of shridhardalavi
    shridhardalavi uses SlackSlack

    Slack is an instant messaging and collaboration system It unifies your entire team communications, making your workflow, well, flow a lot better. It is a cloud-based set of proprietary team collaboration tools and services. Slack teams allow communities, groups, or teams to join through a specific URL or invitation sent by a team admin or owner.

    Avatar of SaberEsPoder
    SaberEsPoder uses SlackSlack

    Slack is our go-to communication tool and it's slowly replacing emails across all departments of the company. We built our own Slack Bot to help us with simple DevOps stuff; Honeybadger notifies us in real time of errors happening on production in our monitoring channel; CircleCI reports builds status and deployment info as well.

    Avatar of Viraat Chandra
    Viraat Chandra uses ZulipZulip

    Open source, well Integrated, welcoming community, plethora of features, intuitive design, cross platform nature and easy extensibility make this one of the best collaboration tools out there. No distractions, god sent features like Makdown, streams, topics, bots, integrations... the complete package.

    Avatar of Andrew Gatenby
    Andrew Gatenby uses SlackSlack

    Team comms is essential. The R&D team is distributed over two offices, as well as the chance that people are working from home. Slack provides lots of options of keeping individuals and groups up to date. We also use it to integrate into services such as Github and Sentry.

    Avatar of Refractal
    Refractal uses SlackSlack

    Slack is a lifesaver, not only for our day to day team communications and it's direct links into our other tools, but for Beta testing as well, with our custom Slack bot in our beta group being an invaluable asset to avoid giving our testers direct JIRA access.

    Avatar of MadElf1337
    MadElf1337 uses ZulipZulip

    I Use Zulip as it is a very powerfu group chat & Is fille d with apps from every available platform. Not to mention that I got addicted to Open-Source Software because of them. Really Helpful Tool

    Avatar of The Doodle
    The Doodle uses ZulipZulip

    its a great tool for bussiness development and business advertiseements

    Avatar of Ivche1337
    Ivche1337 uses ZulipZulip

    Because it's a cool open source chat and has cool featueres

    Avatar of Aditya Chaurasia
    Aditya Chaurasia uses ZulipZulip

    It's brilliant!

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