Slack

Team communication and collaboration platform

4.8•985 reviews•

7.3K followers

Team communication and collaboration platform

4.8•985 reviews•

7.3K followers

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Team collaboration software

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Messaging apps

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.

Slack Reviews

The community submitted 985 reviews to tell us what they like about Slack, what Slack can do better, and more.

4.8

Based on 985 reviews

Review Slack?

Reviewers mostly see Slack as the default hub for team communication: fast, clean, easy to pick up, and strong at channels, threads, file sharing, search, and integrations that pull work updates into one place. Users say it often replaces internal email and works especially well for remote or async teams. The main complaint is noise: too many channels, too many notifications, and threads or older messages sometimes getting lost. Some also mention clunky newer features, free-plan limits, pricing, and uneven huddles or video reliability.

+988

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Pros

remote team collaboration (102)

integration with productivity tools (91)

channel organization (62)

real-time messaging (62)

user-friendly interface (37)

search functionality (30)

file sharing (24)

threaded conversations (22)

workflow automation (14)

customizable notifications (13)

Cons

notification fatigue (29)

channel bloat (14)

learning curve (11)

mobile app performance (10)

free version limitations (8)

threaded conversations (3)

video call quality (3)

channel organization (2)

Pros

Cons

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Most Informative

•4 reviews

What's great

user-friendly interface (37)search functionality (30)file sharing (24)integration with productivity tools (91)real-time messaging (62)channel organization (62)remote team collaboration (102)customizable notifications (13)

Slack is fantastic because it keeps communication fast, organized, and easy to follow. Channels keep conversations separated by team or topic, while threads prevent important discussions from getting lost. It’s also great for quick collaboration through file sharing, huddles, integrations, reminders, and searchable history. For remote teams especially, it creates a much more connected and informal workplace than relying only on email.

What needs improvement

channel organization (2)threaded conversations (3)

Slack is excellent for collaboration, but better notification management, simpler thread navigation, and stronger built-in task/follow-up features would make it even more effective.

vs Alternatives

I’d choose Slack over many alternatives because it strikes a strong balance between speed, organization, and team culture. Channels and threads keep conversations structured, search is excellent, and integrations with tools like Google Drive, GitHub, Jira, and calendars make it a true work hub rather than just a chat app.

For remote teams, it also feels more natural for quick questions, informal updates, celebrations, and collaboration. Alternatives can be good, but Slack usually feels more polished, easier to adopt, and better suited to fast-moving teams.

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3 views5d ago

•3 reviews

What's great

user-friendly interface (37)search functionality (30)integration with productivity tools (91)real-time messaging (62)channel organization (62)remote team collaboration (102)threaded conversations (22)

Slack is where pretty much the whole working operation of the company I work at currently exists.

We work from all over the globe, so having an app like this is perfect. We work out of threads within channels to keep everything neat, and I primarily use the Activity tab to keep up to date with what’s actually relevant to me.

Along with how useful it is from that standpoint, the integrations with bots and agents are exactly what I want from the place our business operates out of. Being able to say @Linear or @Claude within a thread just makes everything feel seamless.

What needs improvement

free version limitations (8)notification fatigue (29)

My biggest annoyance is how easy it is for Slack to become noisy once you’re in a lot of channels and threads. The Activity tab helps massively, but there’s still a fair bit of filtering needed to work out what actually needs your attention.

I’ve also had issues with Slack links opening in the browser rather than taking me straight into the right thread in the desktop app. It sounds minor, but when Slack is where you spend most of the day, that sort of thing gets annoying very quickly.

vs Alternatives

Discord

I’ve used Discord plenty, but Slack just feels much better suited to actually running a business out of. Threads, channels, integrations and the Activity tab all make it easier to separate what I need to see from everything else going on. Discord is great for communities, Slack feels built for work.

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2 views18h ago

•17 reviews

What's great

user-friendly interface (37)search functionality (30)file sharing (24)integration with productivity tools (91)real-time messaging (62)channel organization (62)huddles (8)remote team collaboration (102)threaded conversations (22)

Slack is useful because it keeps team communication fast without turning every small update into a meeting.

I use it for project discussions, async updates, quick decisions, file sharing, and keeping different workstreams separated by channels. Threads are especially helpful when the team uses them properly. It works best when the workspace has clear channels and people are disciplined about notifications. Otherwise, it can get noisy quickly.

What needs improvement

notification fatigue (29)channel bloat (14)

Slack can become overwhelming when there are too many channels, unclear notification rules, or too many half-finished conversations. The product works best when the team has communication discipline. Better defaults for reducing noise, cleaning up inactive channels, and surfacing important updates would help a lot.

vs Alternatives

Discord

Microsoft Teams

Slack feels better for work communication because channels, threads, integrations, and search are built around team workflows.

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88 views2mo ago

•3 reviews

What's great

user-friendly interface (37)workflow automation (14)file sharing (24)integration with productivity tools (91)real-time messaging (62)channel organization (62)remote team collaboration (102)threaded conversations (22)

We run a 5-person startup and Slack is the one tool everyone actually opens without being told to. Threaded conversations are the killer feature for us we can have three parallel technical discussions in one channel without them turning into a wall of unrelated messages. Search actually finds the decision from three weeks ago, which matters more than people think until the day it saves you from re-litigating something. Integrations with our other tools mean Slack ends up being the place where scattered notifications become one coherent feed instead of five separate ones we'd otherwise ignore.

What needs improvement

searching is the thing that need improvement , most of the time I can not find a subject that I had 4 months ago

vs Alternatives

We tried Discord first, mostly because half the team already had accounts, but it never felt like a work tool the culture and UI both scream "gaming server," and it kept getting treated that way. Microsoft Teams was the other real option since it's bundled with the productivity suite some partners use, but the interface is heavier and slower for the kind of fast, threaded, searchable back-and-forth a small team actually needs day to day. Slack was just the first one that felt built for how we actually work, instead of a video-calling app with chat bolted on, or a chat app trying to be everything at once.

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71 views2mo ago

•2 reviews

What's great

user-friendly interface (37)remote team collaboration (102)

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 (8)

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.

vs Alternatives

Microsoft Teams

I also tried Microsoft Teams and a couple of simpler chat tools. Slack felt more flexible and quicker to adapt to for everyday use.

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166 views7mo ago

•29 reviews

What's great

user-friendly interface (37)search functionality (30)integration with productivity tools (91)real-time messaging (62)channel organization (62)threaded conversations (22)

Threads, channels, and search all in one place. Replaced 90% of internal email overnight. Integrations with everything we use means status, deploys, and tickets land where the team already is.

What needs improvement

notification fatigue (29)channel bloat (14)

Notification overload by default — sensible defaults for new users would help. Channels also multiply faster than anyone archives them; some auto-archive nudge for inactive ones would clean things up.

vs Alternatives

Discord

Teams (came free with our Microsoft stack) and Discord. Teams felt clunky and slow; Discord was fine but not built for work. Slack just felt like the tool the team would actually open every day.

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137 views4mo ago

Astute

•7 reviews

What's great

integration with productivity tools (91)channel organization (62)remote team collaboration (102)

We're a small startup team and Slack is where everything happens - product discussions, QA runs posting into channels, canvases for docs that need to outlive a thread. Most of our tooling reports into Slack now, so it's less a chat app and more the place where the state of the company is visible. It's the first thing I check every morning, before email.

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31 views29d ago

Timelaps

•14 reviews

What's great

workflow automation (14)file sharing (24)channel organization (62)remote team collaboration (102)

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 (8)notification fatigue (29)video call quality (3)

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!

vs Alternatives

Discord

Mattermost Webex

Webex

Microsoft Teams Lark

Lark

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.

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220 views8mo ago

•6 reviews

What's great

user-friendly interface (37)

Slack is just simple to use. The interface stays clean even with a lot going on, and it's easy to jump in without a learning curve.

What needs improvement

video call quality (3)

Huddles are the weak point for me. My internet is stable and every other call app works fine, but Huddles specifically keep having connection issues.

vs Alternatives

ClickUp

We've been using it for a while, but it's a bit more complex than Slack.

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26 views22d ago

•5 reviews

What's great

I've been using Slack for team communication, and it's made collaboration much easier. Channels keep conversations organized, and the integrations with tools like Notion and Google Drive save a lot of time.

What needs improvement

Notifications can get overwhelming in busy workspaces, and the free plan's message history limit can be restrictive.

vs Alternatives

I also looked at Microsoft Teams, but Slack felt faster, cleaner, and easier to use for day-to-day communication.

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45 views2mo ago

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