Slack is an AI-powered work platform designed to enhance productivity by managing projects, automating workflows, and connecting teams securely. It provides a digital-first ecosystem for work, integrating conversations, apps, and customer interactions in one place.

Every review is from a verified employee

Overall

4.5

25 reviews

5
18
4
6
3
1
2
0
1
0

Rating by dimension

Setup and Onboarding as a user4.5
Customer support4.0
Ease of use5.0
Value for money4.5
Features & innovations4.3

AI overview

Slack is highly regarded for its ease of use and seamless integrations, making it a staple in team communication. Most reviewers appreciate its ability to organize conversations and reduce email clutter. However, notification overload is a common concern, with some users finding it overwhelming.

Showing 25 reviews

Classic review
Yann G.

Sales·Frequent User·lemlist·France·used it More than 2 years

5
September 2026

Must have tool for communication

happy with it since 2018 now. on top of the obvious internal communication I have external channel and a bunch of workflow

Classic review
Employee at Alma

Frequent User·France·used it More than 2 years

4.5
September 2026

The essence of the startup world

Slack is honestly one of the tools I use the most at work. It makes it easy to communicate with the team, keep conversations organized, and avoid endless email threads. I also really like the integrations with other tools we use every day. The downside is that Slack can sometimes feel overwhelming. There are often too many notifications, channels, and messages, and it’s easy to get distracted or miss something important.

Quick review
Employee at Plug’Heur

Frequent User·France

5
August 2026

Slack est une solution très pratique et intuitive, qui facilite réellement la communication et la collaboration au quotidien. L’outil est fiable, bien conçu et permet de centraliser efficacement les échanges.

Quick review
Guillaume F.

Founder / CEO·Frequent User·LLM Monitor·France

4
August 2026

les plus : centralisation de la communication par canaux et la simplicité d'intégration des autres outils de travail. les moins : la gestion d'un volume trop important de notifications quotidiennes peut rapidement devenir fatigante pour les équipes.

Quick review
Employee at Pipecorn

Expert admin·USA

5
August 2026

Great for internal communication in a company as well as communicating with other companies through shared channels

Quick review
Employee at Opsima

Administrator·France

4.5
August 2026

Slack is easy to use, makes communication quick, and is great for keeping team conversations organized. The main downside is that it can sometimes be overwhelming with too many channels and notifications.

Quick review
Employee at Epsor

Frequent User·France

5
August 2026

Un indispensable pour collaborer au quotidien

Quick review
Gregory C.

Operations·Frequent User·Elium·Belgium

4.5
August 2026

Excellent communication flow layer for small organisations.

Quick review
Romain B.

Founder / CEO·Frequent User·Heeet·France

3
August 2026

Quite happy with Slack, despite its limits.

Quick review
Employee at Alma

Frequent User·France

4
August 2026

Puissant mais peut générer une sur communication inefficace.