Slack is an application that helps teams communicate and work together by combining messaging, file sharing, and app integrations in one place. It makes it easy for teams to stay connected and work efficiently, whether they are in the office or working remotely.
The community submitted 918 reviews to tell
us what they like about Slack, what Slack can do better, and
more.
4.8
Based on 918 reviews
Review Slack?
Reviewers largely see Slack as the default hub for team communication: fast, reliable, and especially strong for channels, threads, search, file sharing, huddles, and broad integrations that reduce email and keep remote teams aligned. Many say it fits engineering and startup workflows well and is easier to live in than alternatives like Teams or Discord. The recurring downside is noise: too many notifications, cluttered channels, buried threads, and growing feature complexity. Some also call out free-plan limits, pricing, occasional lag, and weaker video performance.
As a startup, we move fast and break things. Slack is where the pieces get put back together. It’s more than just chat. Thanks for keeping our chaotic startup energy organized and actionable. We’re building better because we communicate better.
workflow automation (10)file sharing (20)channel organization (54)remote team collaboration (94)
Slack remains one of the golden standards for remote team collaboration; my favorite part of the tool is the integrations it carries natively. Channels also help a lot for teams that wear many hats.
What needs improvement
mobile app performance (10)free version limitations (7)notification fatigue (25)video call quality (2)
Free version limits remain a blocker. However, many competitor tools have also lowered their free version limits so not the biggest flaw. I do think the mobile version can be further improved though!
I still use the other products but vary a lot of the situation. Lark is more of a super app that also includes gmeet/zoom and notion - used a lot more in Chinese companies. Teams is still heavily used in consulting / f500 companies. Discord is used more for gaming / community management for crypto and ai startups. Webex and Mattermost are more niches now.
I chose Slack because it’s where most teams already run their day-to-day work. It has a strong thread-based workflow, great notifications, and makes it effortless to reply quickly without introducing another support dashboard.
user-friendly interface (30)remote team collaboration (94)
Slack has been a solid tool for keeping team communication in one place. I really like how easy it is to follow conversations through channels, especially for day-to-day coordination. Best tools for teams especially startups.
What needs improvement
free version limitations (7)
Over time, channels and notifications can get out of hand if you’re not careful. The free plan also starts to feel limiting as the team grows, which is a bit disappointing.