Slack

Team communication and collaboration platform

4.8•924 reviews•

6.5K followers

Team communication and collaboration platform

4.8•924 reviews•

6.5K followers

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Team collaboration software

•

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 924 reviews to tell us what they like about Slack, what Slack can do better, and more.

4.8

Based on 924 reviews

Review Slack?

Reviewers largely see Slack as the default hub for fast, organized team communication, especially for remote and startup teams. They repeatedly praise channels, threads, strong search, file sharing, huddles, and broad integrations that keep work moving without long email chains. Several users also say it feels cleaner or more flexible than Teams, Discord, or simpler chat tools. The main complaint is noise: too many notifications, crowded channels, buried threads, and growing feature clutter. Some also mention limits on free use, higher costs, and occasional performance or video issues.

+924

Summarized with AI

Pros

remote team collaboration (95)

integration with productivity tools (85)

real-time messaging (58)

channel organization (56)

user-friendly interface (32)

search functionality (27)

file sharing (21)

threaded conversations (19)

customizable notifications (12)

workflow automation (11)

Cons

notification fatigue (26)

channel bloat (13)

learning curve (11)

mobile app performance (10)

free version limitations (7)

video call quality (2)

Pros

Cons

Tines Build agents & automations integrated across your workspace

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•11 reviews

What's great

user-friendly interface (32)search functionality (27)integration with productivity tools (85)real-time messaging (58)channel organization (56)threaded conversations (19)

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 (26)channel bloat (13)

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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Ease of use

Reliability

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7 views4d ago

•2 reviews

What's great

user-friendly interface (32)remote team collaboration (95)

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.

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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90 views3mo ago

•1 review

What's great

user-friendly interface (32)workflow automation (11)integration with productivity tools (85)real-time messaging (58)channel organization (56)remote team collaboration (95)threaded conversations (19)

The way this keeps work organized across different teams is really valuable to me. It makes it easy to stay structured without blocking the open communication needed to actually improve projects. A solid, reliable tool that keeps my engineering workflow running smoothly.

What needs improvement

notification fatigue (26)

vs Alternatives

Slack is more developer-friendly compared to other solutions. That's why I chose Slack.

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46 views3mo ago

•1 review

What's great

I’ve been looking for ways to bring a bit more structure and context into Slack without adding noise, and this integration seems to strike a reasonable balance. The setup was straightforward in my limited testing, and the features like threaded summaries and quick action shortcuts feel like they could help teams reduce the constant back-and-forth for routine tasks. I’m interested to see how it performs at scale with larger channels and more complex workflows, but it looks like a practical tool for teams trying to keep Slack focused.

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16 views3mo ago

•22 reviews

Slack remains one of the leading team communication tools, and for good reason. Its clean interface, speed, and extensive integration capabilities make it a fantastic option for organizations looking to enhance their collaboration. I’ve found it particularly effective for real-time messaging and file sharing, and the ability to connect seamlessly with third-party apps like Google Drive, Notion, and Zoom is a major plus. It was beneficial when we were developing Taskosaur, as the search function and workflow automation features significantly streamlined collaboration across our departments. However, there are some drawbacks to consider. For larger teams, Slack can quickly become noisy and overwhelming if channels aren’t organized effectively. This can lead to important messages getting lost in the shuffle, which happened with us. Furthermore, I think the pricing is a bit steep for startups, which might limit its accessibility for smaller companies. Lastly, Slack's heavy reliance on internet connectivity can be a downside in low-bandwidth situations, making it less than ideal in those circumstances. Overall, while Slack is a powerful communication tool, it does have its limitations that teams should be mindful of.

What's great

user-friendly interface (32)workflow automation (11)search functionality (27)file sharing (21)integration with productivity tools (85)real-time messaging (58)

What needs improvement

notification fatigue (26)channel bloat (13)

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71 views7mo ago

•7 reviews

Slack gives you excellent real-time teamwork: fast channels/threads, solid search, and deep integrations (GitHub/Jira/PagerDuty) plus huddles for quick calls. Downsides: notification noise, fragmented decisions in threads, and higher costs if you need long message retention or multiple workspaces. Versus others: Teams wins on M365/meetings, Discord is cheaper for voice, email/docs are better for decisions. Verdict: great for day-to-day coordination. Pair it with an issue tracker and a doc hub, and enforce channel hygiene.

What's great

search functionality (27)integration with productivity tools (85)real-time messaging (58)huddles (7)threaded conversations (19)

What needs improvement

free version limitations (7)notification fatigue (26)

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55 views8mo ago

•4 reviews

We use Slack because it's kind of the middle ground between Google Chat and Microsoft Teams, which both are not that great. Slack is a good messenger tool. If you use it just as a chat, trying to integrate anything else into it, and/or trying to juggle multiple workspaces, or get people onboarded who have never used it before is a bit challenging. I think Slack was better before they tried to add all of the features that all of the other tools most companies already use. It feels less polished, kind of clunky, and difficult to navigate. Conversation threads, lose messages and get buried if you get too many messages in a day. We use it because there's nothing else really. Would love to see a Slack Lite with just messaging and no other features.

What's great

real-time messaging (58)

What needs improvement

learning curve (11)channel bloat (13)

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48 views9mo ago

•2 reviews

✅ Strengths Real-Time Collaboration – Still unmatched for instant messaging, threaded discussions, and quick file sharing. Integration Ecosystem – Works seamlessly with Google Drive, Zoom, Trello, GitHub, Salesforce, and 2,500+ other apps (critical for workflows). Channel-Based Organization – Great for project-based teams, departments, or topic-focused discussions. Search & Archive – Powerful message history and file retrieval (if you pay for plans). AI & Automation (2025 Updates) – Now includes: Slack AI (summarize threads, smart replies) Workflow Builder (no-code automations) ❌ Weaknesses Cost – Free plan is limited (10k message history, no SSO). Paid plans can get expensive for large teams. Notification Overload – Can become noisy without proper channel discipline (muting is a must). Not Ideal for Long-Form Docs – Loses to Notion, Confluence, or Coda for structured knowledge. Competition Heating Up – Alternatives like Microsoft Teams (deep Office 365 ties) and Discord (for some startups) are strong rivals.

What's great

workflow automation (11)search functionality (27)file sharing (21)integration with productivity tools (85)real-time messaging (58)channel organization (56)threaded conversations (19)

What needs improvement

free version limitations (7)notification fatigue (26)

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28 views10mo ago

•2 reviews

Slack has truly transformed the way teams communicate and collaborate. It's more than just a messaging app — it brings structure, clarity, and efficiency to workplace conversations. The real-time messaging, file sharing, integration with tools like Google Drive, Trello, and GitHub, and the ability to create dedicated channels for projects or teams make it a powerful platform for productivity. I especially appreciate: Clean and intuitive UI: It’s easy to navigate and customize. Search functionality: Finding past messages or shared documents is a breeze. Threaded conversations: Helps keep discussions organized and on-topic. Notifications control: You can fine-tune what alerts you get, which is a blessing. That said, it can sometimes feel a bit overwhelming in very active workspaces, especially with lots of channels and constant messages. But with proper settings and etiquette, it remains one of the best collaboration tools out there.

What's great

user-friendly interface (32)search functionality (27)file sharing (21)integration with productivity tools (85)real-time messaging (58)channel organization (56)threaded conversations (19)customizable notifications (12)

What needs improvement

channel bloat (13)

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26 views10mo ago

•5 reviews

Slack is a highly effective communication platform, especially for teams and organizations that need to stay connected and collaborate in real time. It combines messaging, file sharing, and integration with tools like Google Drive, Zoom, and Trello, making it ideal for remote or hybrid work environments. Its organized channel structure helps reduce email clutter, while features like threads, mentions, and bots enhance productivity. However, for some teams, constant notifications can be overwhelming, so it works best when used with clear communication guidelines.

What's great

file sharing (21)integration with productivity tools (85)real-time messaging (58)channel organization (56)remote team collaboration (95)threaded conversations (19)

What needs improvement

notification fatigue (26)

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16 views10mo ago

Timelaps

•14 reviews

What's great

workflow automation (11)file sharing (21)channel organization (56)remote team collaboration (95)

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 (26)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!

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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116 views4mo ago

used Slack to build Warestack

•15 reviews

Slack's Socket Mode and webhook APIs have unlocked some really cool agentic capabilities for us. We're building AI agents that can operate directly within Slack channels, responding to events, coordinating team actions, and executing post-action workflows. The real-time messaging combined with our webhook integration means our AI can notify teams instantly about PR reviews, deployments, or governance issues. Plus, the bot framework makes it feel like having an AI teammate that's always available in the channel.

What's great

workflow automation (11)real-time messaging (58)

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56 views9mo ago

Gridapps Testimonials

•8 reviews

Slack is the heartbeat of our team communication. We use it daily for everything — project updates, quick decision-making, integrations with tools like Notion and GitHub, and fun culture-building with custom emojis and bots. Its channel-based structure keeps conversations focused and organized. The search feature is powerful, and the ability to reply in threads keeps everything tidy. Slack has drastically reduced email clutter and increased our speed of collaboration. It’s the virtual office for modern teams.

What's great

search functionality (27)integration with productivity tools (85)channel organization (56)remote team collaboration (95)threaded conversations (19)

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49 views10mo ago