Slack - Team communication for the 21st century.

Companies have been adopting Slack‘s group-messaging app surprisingly quickly in the year or so since it launched. Startup founders often mention Slack when someone asks them which apps their teams love to use. Let's take a look.

Organize your team conversations in open channels. Make a channel for a project, a topic, a team, or anything—everyone has a transparent view of all that’s going on.

Private Channels
For sensitive information, create private channels and invite a few team members. No one else can see or join your private channels.

Direct Messages
To reach a colleague directly, send them a Direct Message. It's completely private and secure.

Drag, drop, and share your files.
Not just your messages, but all your files, images, PDFs, documents, and spreadsheets can be dropped right into Slack and shared with anyone you want. Add comments, star for later reference, and it’s all completely searchable.
If you use any services like Google Drive, Dropbox, or Box, just paste the link and that document is immediately in sync and searchable too.

All your tools in one place.
Connect all the tools you use to Slack and avoid all that constant switching between apps. Set up your integration so that you get all your notifications directly within Slack—from support requests, code check-ins, and error logs to sales leads—all of them searchable in one central archive.

Search your entire archive.
Everything in Slack—messages, notifications, files, and all—is automatically indexed and archived so that you can have it at your fingertips whenever you want. Slack also indexes the content of every file so you can search within PDFs, Word documents, Google docs, and more. With one search box and a set of powerful search operators, you can slice and dice your way to that one message in your communication haystack.

Everywhere you go.
With fully native apps for iOS and Android, whatever you do on one device is reflected everywhere. Everything is in sync. We’ll keep your place so you can always pick up wherever you left off.

Customize your notifications whether you’re on your computer or mobile device. Dial them up to be alerted about everything or dial them down to focus on just a few things.

Reclaim your workday.
Less email. More productive. Our customers see an average 48.6% reduction in internal email, helping them enjoy a simpler, more pleasant, and more productive work life.

See the data
Slack is free to use for as long as you want for teams of all sizes. Create a new team
You can easily upgrade to paid plans, which offer more features and controls.

Final Notes about the SLACK

8,000 customers signed up for the service within 24 hours of its launch in August 2013. In February 2015, the company wrote that around 10,000 new daily active users were signing up each week, and had more than 135,000 paying customers spread across 60,000 teams.By April, those numbers had grown to 200,000 paid subscribers and a total of 750,000 daily active users. In 2015, Slack passed more than a million daily active users.

The Financial Times wrote in March 2015 that Slack was the first business technology to have crossed from business into personal use since Microsoft Office and the BlackBerry.

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