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Slack vs Ninety Comparison (2026)

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Compare similar apps

Microsoft Teams

4.5

Connecteam

4.6

Google Workspace

4.7

Good recommendations?

Slack

Ninety

Overview

Slack is a single workspace that connects users with the people and tools they work with everyday, no matter where they are or what they do

Ninety is a cloud-based business operating system that makes it easier for small and midsized organizations to build great companies. It brings the core tools of EOS® into one simple, connected platform so leadership teams can align on vision, run better meetings, and hold each other accountable.

Platforms supported

Web-based
iPhone app
Android app
Windows Phone app

Typical customers

Freelancers
Small businesses
Mid size businesses
Large enterprises

Customer support

Phone
Online
Knowledge base
Video tutorials

view more detailsview details

Platforms supported

Web-based
iPhone app
Android app
Windows Phone app

Typical customers

Freelancers
Small businesses
Mid size businesses
Large enterprises

Customer support

Phone
Online
Knowledge base
Video tutorials

view more detailsview details

Video & Screenshots

Pricing

Starting from

8.75

/user

Per month

Free trial available
Credit cardless trial
Free account
Subscription based

Starting from

/user

Per month

Free trial available
Credit cardless trial
Free account
Subscription based

User reviews

4.7

24.2K

17.4K

5.7K

912

127

Value for money

Ease of use

Features

Customer support

86%

would recommend this app

4.7

Value for money

Ease of use

Features

Customer support

91%

would recommend this app

Pros

“Channels help keep discussions organized by project or department, file sharing is seamless, notifications can be customized to reduce distractions, and the powerful search feature makes it easy to retrieve older conversations.”

Emilia W.

Network Support Coordinator

“The intuitive interface, reliable performance, and wide range of integrations have helped streamline our daily workflows and improve productivity. While there are occasional challenges with managing large volumes of messages and notifications, the benefits far outweigh these minor drawbacks.”

Andrea L.

Innovation Manager

“What I most like about Slack are the video call feature (Huddle) and screen-recording feature (which also allows you to record audio and camera with it).”

James W.

Salesforce Administrator

Pros

“It helped create more visibility across the team and provided a structured way to track progress, accountability, and priorities.”

Kristen N.

POA

“Everything EOS is able to be easily accessed by the entire team, from the VTO and accountability chart to the issues list and scorecard.”

Ashley H.

Operations Coordinator

“The task management and team collaboration features make it easy to track priorities and ensure follow-through.”

Rebecca N.

Operations Manager

Cons

“Notification management can also be challenging in active workspaces, leading to information overload if not carefully configured. While Slack offers powerful search capabilities, finding older conversations or specific files is not always as intuitive as it could be.”

Cristiano F.

Consultant

“The only time I get frustrated with it is when I need to invite partners (from external companies) into our workspace for targeted deal collaboration. When those folks come from organizations stuck with Teams, it's not easy to get them to adopt it for a limited time, even though it's easy enough to add them to the dedicated Slack workspace.”

Alicia R.

Director, Business Development

“Notifications can become overwhelming fast if you don't take time to configure them properly, and most people don't — which leads to either constant pinging or people muting everything and missing important messages.”

Enish S.

Business Administrator

Cons

“Its missing some key features like being able to report on rocks and the per seat license fee means we only have our SLT team using it where it would be brilliant to have the entire business using it but with 50 members of staff it would be far too expensive.”

Alex B.

Managing Director

“It also negates the need for someone to spend the entire meeting just taking notes, because you can create issues and to-dos so easily and quickly.”

Ashley H.

Operations Coordinator

“The biggest challenge was that some features were not as intuitive or flexible as we needed.”

Kristen N.

POA