Slack Review
BUSINESS COMMUNICATIONS SOFTWAREChoose Slack when internal team messaging is the job to be done and you want freemium channels with a deep integration ecosystem — pair it with a phone vendor if you also need PSTN.
Starting price
$7.25/user/month
Free plan
Yes
Free trial
No
Best for
Knowledge-worker teams that need channel-based team messaging as the primary collaboration hub
SoftwareGlimpse review
6.7/10
Average
- ease of use9
- voice messaging quality5
- routing workflows4
- integrations10
- analytics6
- outbound tools2
Slack plans & pricing
Verified 2026-08-17 from slack.com/pricing (high confidence). Free $0; Pro $7.25/user/month annual ($8.75 monthly); Business+ $15 annual ($18 monthly); Enterprise+ contact sales. No free trial on paid plans in the published pricing table — Free tier is the evaluation path. Salesforce ownership; Slack Connect enables cross-org channels.
Pro
$7.25
per user / mo, billed annually
- Everything in Free, plus:
- Pro buyers
Business+
$15.00
per user / mo, billed annually
- Everything in Pro, plus:
- Teams that need deeper reporting and process controls
Enterprise+
Custom
Contact sales
- Everything in Business+, plus:
- Organizations needing custom commercial terms
Estimate team cost
Rough monthly and annual cost for Slack based on list pricing. Confirm rates on the vendor site before buying.
- Monthly
- $0.00
- Annual
- $0.00
Slack pricing compared
| Metric | Slack | Microsoft Teams | Zenzap | Zoom |
|---|---|---|---|---|
| Starting price | $7.25/user/month | $0.00/user/month | $3.00/user/month | $15.00/user/month |
| Free plan | Yes | Yes | Yes | Yes |
| Free trial | No | Yes | No | Yes |