Free plan message and file history is limited to 90 days, and the plan allows up to 10 apps.
Teams relying on older searchable discussions or many connected tools may need a paid plan.
Evidence source ↗
Slack
Slack is a cloud collaboration platform for channel-based messaging, calls, file sharing, integrations, and workflow automation. Paid plans add longer message history and plan-dependent AI features.
Editorial overview
Aggregated Overview
Product documentation describes messaging, huddles, workflows, integrations, APIs, and plan-based AI. G2 lists a 4.5/5 rating, but its review text was not independently analyzed here.
This profile combines documented product information and independent evidence where available. It is not a hands-on test unless TechZella explicitly identifies one.
Slack Decision Snapshot
A quick way to understand who this product may suit, where its limits matter, and which facts are most relevant before you compare alternatives.
Best suited to
Organizations that need channel-based team communication, external partner collaboration, connected business apps, and workflow automation in one cloud workspace.
Look elsewhere if
Teams needing unlimited searchable history or unrestricted integrations on a free plan, or buyers seeking a standalone task-management system rather than a communication hub, and should evaluate alternatives such as Microsoft Teams or Google Chat instead.
Platforms
API, Desktop, Mobile, SaaS, Web
TechZella assessment
8.3/10
Overview
Slack is a cloud-based collaboration product organized around channels, direct messages, and shared workspaces. Teams use it to exchange messages and files, meet in huddles, connect business apps, and automate routine work.
The Free plan includes 90 days of searchable history and up to 10 apps. Paid plans add unlimited history and integrations, with other capabilities depending on the selected plan.
Slack — What Sets It Apart?
These are the product-specific differences that may matter when deciding whether the software fits your workflow. They are based on documented evidence rather than a universal ranking.
- Its app directory lists more than 2,600 integrations, and Workflow Builder connects Slack conversations to app actions.
- Slackbot can use workspace context and connected sources, while its features and usage limits vary by plan.
6 key claims verifiedOur editorial team checked this profile against pricing information, vendor documentation, product documentation. Supported by 6 documented sources.
Slack Pros & Cons
Pros
- Combines channels, direct messages, huddles, external collaboration, and file sharing.
- Connects with more than 2,600 listed apps and supports custom API-based apps.
- Offers a free tier and paid-plan trials for eligible workspaces.
Cons
- Free plan limits searchable history to 90 days and app connections to 10.
- AI capabilities and Slackbot usage depend on the selected plan.
- AI huddle notes are not available in huddles with external guests.
Slack Gotchas & Operational Limits
These are documented constraints or practical friction points that may matter before you adopt the product.
Slackbot usage is restricted by plan. Free and Pro users generally receive access only during a trial or preview; Business+ has a weekly message limit.
AI availability and recurring use should be confirmed against the workspace's plan and intended workload.
Evidence source ↗Slack Pricing & Plans
Free
$0
month
Free plan with 90 days of searchable message history and up to 10 apps. Includes 1:1 huddles.
Check current pricing →Pro
$8.75 monthly or $7.25 annually
per active user per month
Unlimited message history and app integrations, group meetings, and additional collaboration features.
Check current pricing →Business+
$18 monthly or $15 annually
per user per month
Includes advanced AI and expanded organization features; Slackbot usage is subject to a weekly limit.
Check current pricing →Enterprise+
$45
per user per month, billed annually
Enterprise plan with unlimited history and integrations; contact Slack sales for plan details and contracting.
Check current pricing →Pro or Business+ trial
$0
trial
Eligible workspace owners or admins can request a trial without a credit card; the standard trial duration is not stated on the help page.
Check current pricing →Pricing may change. Verify current plans on the vendor's website.
Slack Features
Messaging and collaboration
- Public and private channels
- Direct messages and group conversations
- Threads, reactions, mentions, and notifications
- Slack Connect for external collaboration
- File sharing and searchable conversation history
- Canvases and lists
Meetings
- Audio and video huddles
- Screen sharing
- AI-generated huddle notes on paid plans, with guest restrictions
Automation and integrations
- Workflow Builder for no-code workflows
- App directory with more than 2,600 apps
- Custom apps using Slack APIs
- Events API for event-driven app workflows
AI
- AI conversation summaries
- Plan-dependent search answers, recaps, translations, and file summaries
- Slackbot availability and usage limits vary by plan
Alternatives
Microsoft Teams is worth comparing when an organization wants chat and meetings alongside Microsoft 365 services. Google Chat may suit organizations that want team spaces integrated with Gmail, Calendar, Drive, and Meet. Compare the tools’ plan boundaries, existing software ecosystem, and required integrations before choosing.
Slack Specifications
| Deployment | Cloud-hosted SaaS |
|---|---|
| Web access | Web browser |
| Desktop apps | macOS, Windows, Linux |
| Mobile apps | iOS, Android |
| Integrations | 2,600+ apps listed by Slack |
| API | Web API, Events API, OAuth 2.0 authorization |
| Free plan history | 90 days searchable |
| Free plan app connections | Up to 10 |
| Free trial | Eligible Pro or Business+ trial by request; no card required |
Deployment & System Footprint
Verified installation, hosting, administration, or environment details that can affect implementation.
| Installation or hosting | Cloud-hosted SaaS accessed through web, desktop, and mobile apps; Slack also provides APIs for custom integrations. Source ↗ |
|---|
Migration & Lock-In
Documented portability, standards, export, or switching considerations. No switching-cost score is shown unless the evidence supports one.
Data portability
Slack documents export options for workspace data; available export scope depends on plan and permissions. Verify the export type required before switching plans or migrating.
Evidence source ↗Our evidence-based assessment
TechZella Score
A proprietary editorial score based on product capabilities, usability, value, performance, support and user sentiment evidence.
8.3/10Moderate confidence
Product documentation describes messaging, huddles, workflows, integrations, APIs, and plan-based AI. G2 lists a 4.5/5 rating, but its review text was not independently analyzed here.
Methodology v1.0. The assessment weighs feature coverage (25%), ease of use (15%), value for money (20%), performance (15%), support (10%) and user sentiment (15%), using researched product evidence and verified review evidence where available. It is a TechZella editorial assessment, not a direct user-review average.
Editorial transparency
Our Review Methodology
Key claims are linked to the sources used to verify them. This evidence record is separate from third-party user ratings.
TechZella evaluates software using documented product capabilities, pricing information, usability and value considerations, independent user evidence where available, and competitive context. The assessment is an editorial review, not a hands-on test unless one is explicitly identified. Our editorial assessment is based on 6 documented sources.
What TechZella adds
- Its app directory lists more than 2,600 integrations, and Workflow Builder connects Slack conversations to app actions.
- Slackbot can use workspace context and connected sources, while its features and usage limits vary by plan.
Important limitations
- The Free plan limits searchable message history to 90 days and app connections to 10.
- Some AI and administration capabilities depend on paid plans; Slackbot usage also has plan-specific limits.
Evidence-backed claimsSlack Free limits searchable message history to 90 days and app connections to 10. Pro costs $7.25 per active user monthly with annual billing or $8.75 with monthly billing. Slack supports integrations from an app directory listing more than 2,600 apps. Slack provides a Web API and OAuth-based app authorization. Paid Slack plans can be tried without adding a credit card, subject to eligibility. Slack huddle AI notes are available on paid plans and cannot be used with external guests.
The current pricing page lists 90 days of history and up to 10 apps for Free.
View source ↗Verified 2026-10-12Slack's Pro plan page lists both rates and billing periods.
View source ↗Verified 2026-10-12Slack's integrations page describes its catalog and app connections.
View source ↗Verified 2026-10-12The API documentation describes Web API methods and OAuth authorization for app access.
View source ↗Verified 2026-10-12Slack's trial instructions say owners or admins can request a Pro or Business+ trial without a card and are not charged unless they upgrade.
View source ↗Verified 2026-10-12Slack's help page states paid-plan availability and excludes huddles with external people or guests.
View source ↗Verified 2026-10-12Community feedback
Reviews
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FAQ
Does Slack have a free plan? Yes. The Free plan includes 90 days of searchable message history and up to 10 apps.
Does Slack offer a free trial? Eligible workspace owners or admins can request a Pro or Business+ trial. Slack says a credit card is not needed to start.
Does Slack have an API? Yes. Slack offers a Web API and Events API, with OAuth-based authorization and permission scopes for apps.
Which platforms does Slack support? Slack provides web access, desktop apps for macOS, Windows, and Linux, and mobile apps for iOS and Android. Check Slack’s current system requirements for supported versions.
Can Slack record meeting notes? Paid plans include AI huddle notes. Slack says those notes are unavailable for huddles with external people or guests.
What Has Changed
This history records material data changes detected when TechZella re-researched the profile.
2026-10-12Research update changed: Pricing, Features, Specifications, Alternatives, Competitors, Trusted ratings, Description.
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