Slack reviews

3.9

77% would recommend to a friend

(1,096 total reviews)
avatar

Stewart Butterfield

88% approve of CEO

70% positive business outlook

Slack has an employee rating of 3.9 out of 5 stars, based on 1,096 company reviews on Glassdoor which indicates that most employees have a good working experience there. The Slack employee rating is in line with the average (within 1 standard deviation) for employers within the Information Technology industry (3.6 stars).

Reviews by job title

1K reviews
4.0
Jan 8, 2026

Great people

Recommend
CEO approval
Business Outlook

Pros

- Nearly everyone I worked with embodied Slack's values: humble, collaborative, hard-working and smart - Work hard, go home culture is live and well - Great place for growth

Cons

- Steady corporatization since Salesforce acquisition, less product-focused and more sales-focused - There are fewer and fewer left who were part of Slack's culture pre-acquisition

Viewing 274 - 276 of 1,096 Reviews

Glassdoor has 1,228 Slack reviews submitted anonymously by Slack employees. Read employee reviews and ratings on Glassdoor to decide if Slack is right for you.