What is a channel? What do you do with tool linkage? Meet the basics of Slack

This post is also available in: 日本語



This post, titled “The Basics of Slack” introduces you to the business scene, especially Slack, a chat tool that is becoming mainstream on the Internet and startups.


What is Slack?

Slack is primarily a chat tool for business engineers and other projects.

In a similar category, there are “Work Chat” run by Facebook, “Chatwork” run by Chat work, and “LINE Works” run by LINE.

Slack is particularly popular with startups, IT companies and engineers. Behind the scenes, Slack’s unique features include slash-command customization and active app integration with external services.


Slack Users

Slack currently has more than 500,000 organizations in more than 150 countries and more than 10 million daily active users. In Japan, the number of active users has exceeded 500,000, making it the second largest in the world. That’s a lot of growth.

Main clients of Slack



Company that operates Slack

Slack is run by Slack Technologies. A communication tool developed by Stewart Butterfield in 2009.



Originally a game development company

Slack was actually developed by Butterfield and others as a team communication tool for developing online games. I improved the product mainly through feedback from my friend’s company.

Slack stands for “Searchable Log of All Conversation and Knowledge”.

Current Slack

Slack has grown from 8 employees initially to just over 900. Slack is headquartered in San Francisco. It is currently said to be worth 800 billion yen.

The decision by the Softbank Vision Fund to invest in the fund in September 2018 also made headlines.


CNET japan

In late 2018, Slack launched a Japanese version of the service.

「Slack」 11月17日日本版ローンチ


Basic Structure Of Slack

Slack is structured as Workspace > Channels.

For example, a workspace can be a unit of a large organization, such as a company, and channels can be freely accessed by various projects and communication units within it.

You can set up channels on a team or project basis, and you are free to invite or leave.



Slack Features

Let’s take a quick look at the features of Slack.

Can be threaded

You can thread conversations about posts on specific topics.



Multiple voice calls are also possible.

Slack supports voice as well as chat. Video chat is also available.

You can also hold a video conference through Slack.


Work with a variety of tools

Slack works with a variety of 3rd Party tools. It syncs with Google, Dropbox, Salesforce, and Confluence. The following is an entry regarding cooperation.


Can be manipulated with the slash command

Slack provides a common Slack command called the slash command.

For example, you can use it to remind yourself at specific times, change your status, and more. See the following entry for details.

Communicate with EMOJI

Slack lets you communicate in emoji. You can easily create your own custom emoji. It’s full of tricks to make communication more fun.

Slack’s various tips

There are a lot of tips on Slack. By making full use of these, you can dramatically increase your work efficiency. You can find some of the best tips in the following post.


And finally

That’s it for the chat tool Slack.