Slack is a messaging program designed specifically for the office, developed by Slack Technologies and now owned by Salesforce.
Zoom is a video communications platform known for reliable, low-latency video calls that scale from one-on-one meetings to large webinars and virtual events. It became a household name during remote-work adoption and remains a default choice for external client calls and conferences. Beyond core meetings, the Zoom Workplace suite bundles team chat, whiteboarding, and Zoom Phone for VoIP calling, positioning it as a broader collaboration platform rather than just a meetings app. AI Companion, Zoom's built-in assistant, provides meeting summaries, smart chapters, and follow-up task suggestions automatically after calls end.
Free tier with message history limits; paid plans from $7.25/user/month.
Free for meetings up to 40 minutes; paid plans start at $13.33/user/month.
- Excellent search and channel organization
- Huge app ecosystem
- Reliable and fast
- Great notification controls
- Very reliable connection quality
- Simple, familiar interface
- Strong webinar features
- Good screen sharing and annotation
- Free plan history limit is restrictive
- Can become noisy with too many channels
- Pricing adds up for large teams
- Free plan 40-minute limit on group calls
- Additional cost for Phone and Webinar add-ons
- History of past security/privacy scrutiny
What reviewers say
Slack Reviews
4.0 (3)Decent but has rough edges
Slack is solid overall, though it's not perfect. On the plus side, reliable and fast. That said, free plan history limit is restrictive, which held us back from rating it higher.
Solid choice
Been a daily user of Slack for a while now. Great notification controls. One minor gripe: pricing adds up for large teams, but it hasn't been a dealbreaker. Would recommend to anyone considering it.
Solid choice
Slack has quickly become part of our daily workflow. Huge app ecosystem. No major complaints so far. Would recommend to anyone considering it.
Zoom Reviews
4.0 (2)Works, with some caveats
Zoom is solid overall, though it's not perfect. On the plus side, strong webinar features. That said, additional cost for phone and webinar add-ons, which held us back from rating it higher.
Highly recommend Zoom
Zoom has quickly become part of our daily workflow. Good screen sharing and annotation. No major complaints so far. Would recommend to anyone considering it.
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The Verdict
AI-generated from listing dataZoom excels at reliable, high‑quality video meetings and large webinars, while Slack shines as a chat‑centric collaboration hub with extensive integrations.
Key differences
- •Zoom provides HD video/audio with a 40‑minute limit on free group calls; Slack’s free tier limits message history, not call length.
- •Zoom includes built‑in webinar capacity up to 50,000 view‑only attendees; Slack only offers lightweight Huddles for audio/video.
- •Slack offers a massive app ecosystem and no‑code workflow builder; Zoom’s integrations focus on core productivity tools.
- •Zoom adds Zoom Phone for cloud VoIP as an optional add‑on; Slack does not provide native telephony.
Pricing & value
Slack free tier is unlimited for 1:1 calls; Zoom free tier caps group video at 40 minutes, requiring paid plan for longer meetings.
Ease of use / learning curve
Zoom’s interface is simple and familiar for video calls; Slack’s channel system can be complex for new users.
Features & depth
Zoom offers HD video, webinars up to 50k, whiteboard, and optional Phone; Slack’s video is limited to Huddles.
Integrations & ecosystem
Slack provides thousands of integrations via its App Directory; Zoom lists only a few key integrations.
Collaboration
Slack’s searchable channels, workflow builder, and Slack Connect enable continuous collaboration beyond meetings.
Scalability
Zoom supports webinars with up to 50,000 view‑only attendees, far exceeding Slack’s Huddle capacity.
Support
Zoom offers 24/7 support on paid plans; Slack provides priority support only on higher tiers.
Choose Slack if…
Teams that prioritize chat, searchable history, and extensive app integrations.
Choose Zoom if…
Organizations needing reliable, large‑scale video meetings or webinars.
Common questions
Which tool is cheaper for a 50‑user team that needs video meetings?
Zoom’s paid plan starts at $13.33/user/month; Slack’s paid plan starts at $7.25/user/month, making Slack cheaper if video is occasional.
Can I run large webinars with Slack?
No. Slack only offers Huddles for small audio/video calls; Zoom supports webinars up to 50,000 view‑only attendees.
Do both platforms have APIs for custom integration?
Yes. Both Zoom and Slack provide APIs for integration with other systems.