Data as of Aug 25, 2026 · Based on 300 AI responses from ChatGPT Search and Google AI Mode · See how Parse measures this
For companies already using Slack, the best tools for integrated calling and status management depend on your team's specific focus.
Zoom Phone is often the preferred choice for teams already using
Zoom for video, while and are frequently highlighted for sales and support teams due to their AI-powered insights and deeper CRM integration capabilities.
Brands AI recommends here
Ideal for teams already using Zoom, this tool acts as a native-feeling phone system within Slack. It allows users to start or join calls directly from the chat interface, keeping communication workflows consistent.
Best for support and sales teams who need to track call activity and sync information with a CRM. It provides real-time notifications and call summaries directly inside Slack, simplifying daily team operations.
A top choice for teams prioritizing AI productivity. It offers deep Slack integration for calling and automatic status syncing, plus advanced AI insights that help users manage communications efficiently.
For a company already deeply rooted in Slack, choosing the right VoIP/UCaaS (Unified Communications as a Service) platform comes down to minimizing app-switching and keeping team presence transparent.
The top-tier VoIP and UC solutions that integrate best with Slack for inline calling, notifications, and status/presence alignment stand out for specific reasons:
/zoom call slash command. When calls wrap up, it can push automated AI-generated call summaries directly into your Slack workspace.User Perspectives
Users leaning heavily into these tools often highlight how much context they save by avoiding separate desktop clients:
“Click the call button from any channel or direct message to place a Zoom Phone call. Use a simple /zoom call slash command to call any Slack user or phone number. Get an AI summary of each call in Slack when it's finished.”
“The Dialpad Slack integration allows teams to focus on their tasks by automatically pushing notifications to Slack. Notifications include: When a call is answered, When a call is completed, When a call is missed...”
If you'd like to narrow this down, tell me:
If Slack is already the company’s collaboration hub, I’d prioritize Zoom Phone, RingCentral, and Dialpad. Slack officially supports all three for third-party calling, including outbound phone calls from DMs on eligible Slack plans.
| Tool | Slack calling | Slack status/presence | Slack notifications/workflows | Best fit |
|---|---|---|---|---|
| Zoom Phone | Excellent — call Slack users or phone numbers from Slack | Excellent — Zoom meeting/phone presence can sync to Slack status | Excellent | Best overall |
| RingCentral | Excellent — native call button + slash commands | Good | Excellent | Enterprise telephony |
| Dialpad | Excellent — click-to-call and 1:1 calls | Good | Excellent for call/voicemail/SMS activity | Slack-centric sales/support teams |
| Microsoft Teams Phone | Good | Good | Good | Companies already standardized on Microsoft 365 |
| Cisco Webex | Good | Good | Good | Cisco-heavy enterprises |
This is probably my first choice if Slack is the primary collaboration layer.
/zoom call @person or a phone number.Verdict: ★★★★★ — strongest combination of calling + presence + Slack workflow integration.
RingCentral is particularly compelling if "VoIP" means a full business phone system, rather than primarily meetings.
Its Slack app supports:
/RingCentral CallSlack also lists RingCentral as one of the providers capable of outbound phone calls directly from Slack DMs.
Verdict: ★★★★★ for enterprise PBX/contact-center requirements; ★★★★☆ for Slack presence specifically.
Dialpad has arguably the most interesting activity-to-Slack integration.
It can push notifications for:
It also supports click-to-call from Slack and is included with qualifying Dialpad plans rather than being a separate Slack add-on.
Slack also lists Dialpad among the providers supporting outbound phone calls from DMs.
Verdict: ★★★★½ — especially attractive for sales, customer support, and teams that want phone activity surfaced in Slack channels.
One important distinction: "integrates with Slack" doesn't necessarily mean "synchronizes presence with Slack." Slack lets these providers become the calling application, but Zoom is the standout here because its documentation explicitly supports syncing Zoom meeting/phone presence into Slack status.
If you tell me the company size (e.g. 50, 500, or 5,000 users) and whether you need contact center, SMS, call recording, CRM integration, or just internal/external calling, I can narrow this to the best 2–3 choices and compare pricing, Slack integration depth, and admin complexity.
For a company that already lives in Slack, I’d shortlist Zoom Phone, Dialpad, and RingCentral. Slack officially supports all three for third-party calling, including outbound phone calls from DMs on eligible Slack plans.
| Platform | Slack calling | Slack status/presence | Slack notifications/workflows | Best fit |
|---|---|---|---|---|
| Zoom Phone | Excellent | Excellent | Excellent | Best overall Slack + UC integration |
| Dialpad | Excellent | Good | Excellent | Best for sales/support teams |
| RingCentral | Excellent | Good | Very good | Best for traditional enterprise UC |
| Microsoft Teams Phone | Good | Good | Very good | Best if Microsoft 365 is already strategic |
| Cisco Webex | Good | Good | Very good | Best for Cisco-heavy environments |
This is probably my #1 choice for a Slack-first company.
Why I'd pick it: the combination of actual telephony + Slack calling + two-way-ish presence/status awareness is unusually cohesive.
Dialpad has perhaps the strongest operational Slack integration of the three.
Its Slack integration can push notifications for calls starting/completing/missing, voicemails, voicemail transcriptions, and text messages into Slack. Users can also initiate 1:1 calls from Slack.
That's particularly useful if you have:
Dialpad is also a Slack Workflow Builder connector, which gives you additional automation possibilities.
Caveat: if presence/status synchronization is your #1 requirement rather than call-event notifications, I'd favor Zoom.
RingCentral is a strong choice if you're looking for a more traditional enterprise UC platform.
Its Slack app lets users initiate RingCentral calls and meetings from Slack, including through the native call icon and slash commands. RingCentral It also appears as a Slack Workflow Builder connector.
Why choose it: strong enterprise telephony/UC capabilities with a solid Slack bridge.
This makes sense primarily if the company is already heavily invested in Microsoft 365. Slack supports Microsoft Teams Calls as a third-party calling option.
But if Slack is the primary collaboration layer, I wouldn't introduce Teams purely for phone service unless Microsoft 365 gives you other compelling reasons.
One important distinction: "Slack integration" doesn't necessarily mean automatic Slack status synchronization. Slack supports the calling apps themselves, while individual providers differ substantially in how deeply they synchronize presence and call events. Zoom is particularly attractive here because its current documentation explicitly supports syncing Zoom meeting/phone presence to Slack status.
If you tell me your company size (e.g. 50, 500, 5,000 users) and whether you need contact-center/sales calling or primarily employee-to-employee calling, I can narrow this to the best 2–3 options and compare pricing, Slack presence sync, SMS, auto-attendants, call queues, recording, and admin/security features.
Why choose it: strong enterprise telephony/UC capabilities with a solid Slack bridge.
This makes sense primarily if the company is already heavily invested in Microsoft 365. Slack supports Microsoft Teams Calls as a third-party calling option.
But if Slack is the primary collaboration layer, I wouldn't introduce Teams purely for phone service unless Microsoft 365 gives you other compelling reasons.
For companies already standardized on Slack, choosing a VoIP/UCaaS (Unified Communications as a Service) tool that bridges cleanly into your environment means prioritizing two major pillars: seamless in-app dialing/meeting triggers and accurate, automated bi-directional status/presence synchronization.
The top platforms integrating best with Slack for calling and status management include:
Zoom offers one of the tightest and most feature-complete native integrations for Slack environments.
/zoom call slash command.Dialpad is heavily built around modern workflows and tight workspace integrations, making it a favorite for teams wanting AI-driven notes embedded in chat.
RingCentral remains an enterprise heavyweight for traditional PBX features married to modern chat apps.
Cisco Webex caters well to organizations with heavy enterprise-grade security and hardware requirements.
Summary Recommendation
If you want to narrow this down, let me know:
For a company already deeply rooted in Slack, choosing the right VoIP or Unified Communications as a Service (UCaaS) provider comes down to native calling functionality, command-line shortcuts, and automatic presence/status synchronization.
The top-performing VoIP/UC tools that integrate best with Slack for calling and status updates include:
If you can share:
I can recommend the single best fit for your tech stack.
If Slack is already your company’s collaboration hub, I’d prioritize native Slack integration, click-to-call, presence/status synchronization, and workflow automation rather than simply comparing VoIP features.
| Platform | Slack integration | Calling from Slack | Status/presence | Best for |
|---|---|---|---|---|
| Dialpad | ⭐⭐⭐⭐⭐ | Excellent | ⭐⭐⭐⭐ | Slack-first companies wanting a dedicated phone system |
| Zoom Phone | ⭐⭐⭐⭐⭐ | Excellent | ⭐⭐⭐⭐ | Companies wanting phone + meetings + strong Slack integration |
| RingCentral | ⭐⭐⭐⭐½ | Excellent | ⭐⭐⭐⭐ | Larger/more complex UCaaS deployments |
| Microsoft Teams Phone | ⭐⭐⭐⭐ | Good | ⭐⭐⭐ | Microsoft 365-heavy organizations that nevertheless use Slack |
| Cisco Webex | ⭐⭐⭐½ | Good | ⭐⭐⭐ | Cisco-centric enterprises |
Slack officially supports third-party calling apps including Dialpad, RingCentral, Zoom and Microsoft Teams Calls, and on paid Slack plans those integrations can support outbound phone calls directly from DMs.
1. Dialpad — probably the best Slack-first choice
I'd put Dialpad at the top if your goal is “make Slack the front door to our communications, while Dialpad handles telephony.” Slack also exposes Dialpad as a Workflow Builder connector, so calling can be incorporated into Slack workflows.
2. Zoom Phone — best overall if you also use Zoom
Zoom's Slack integration is unusually deep: users can initiate Zoom meetings and Zoom Phone calls from Slack, including /zoom call, and completed calls can produce summaries/notifications in Slack.
That makes it particularly attractive if employees already know Zoom.
3. RingCentral — best for enterprise telephony
RingCentral is a strong choice when phone-system depth matters more than having the slickest Slack experience. Slack supports RingCentral as a calling provider and Workflow Builder connector, including external calling.
4. Teams Phone — best when Microsoft 365 is dominant
Teams integrates well enough with Slack to launch/join Teams calls directly from Slack, and Slack can use Teams Calls as its default calling provider.
But I'd generally choose it because you're heavily invested in Microsoft 365, not because it's the best Slack-native UC option.
One important distinction: “calling integration” and “status synchronization” aren't necessarily the same thing. Slack can launch calls through these providers, but I'd verify the specific bidirectional presence behavior you need—e.g., on a phone call → Slack shows “in a call,” call ends → Slack returns to available. Don't assume that because a vendor has a Slack calling integration, it provides full presence synchronization.
If you tell me your company size, whether you use Microsoft 365/Google Workspace, and whether you need inbound/outbound PSTN, SMS, call queues, or contact-center functionality, I can narrow this to the 2–3 strongest choices.
If the company is already standardized on Slack, I’d prioritize UC/VoIP platforms based on how deeply they can live inside Slack—not just whether they have a Slack app.
| Platform | Slack calling | Status/presence | Best for | My take |
|---|---|---|---|---|
| RingCentral | ⭐⭐⭐⭐⭐ | ⭐⭐⭐ | Full business phone/UC | Best overall UCaaS choice |
| Zoom Phone | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | Phone + meetings | Best all-around modern stack |
| Dialpad | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ | AI-first calling | Best for AI/contact-center workflows |
| Microsoft Teams Phone | ⭐⭐⭐ | ⭐⭐⭐⭐⭐* | Microsoft 365 shops | Best if M365 is dominant |
| Cisco Webex | ⭐⭐⭐ | ⭐⭐⭐ | Larger enterprises | Best for Cisco-heavy environments |
*Teams has particularly strong Microsoft/Outlook ↔ Slack status capabilities, rather than Slack being the center of the presence model.
RingCentral has one of the strongest Slack integrations for a company that wants a real business phone system behind Slack. Users can initiate RingCentral meetings or phone calls directly from Slack's native call button, and use slash commands for calls/meetings. Slack also explicitly supports RingCentral for outbound phone calls from DMs.
Choose it if: phone numbers, IVR, call queues, routing, receptionists, analytics and enterprise telephony matter more than having everything revolve around video meetings.
Zoom has become unusually strong here. Its Slack integration supports starting meetings, Zoom Phone calls directly from Slack, slash commands, call/meeting notifications, and—in the newer integration—AI summaries and cross-context information through ZoomMate.
Choose it if: you want one vendor covering business phone + video meetings + increasingly AI-assisted communications, while keeping Slack as the collaboration front end.
Dialpad is particularly interesting if you care about AI transcription, call summaries, sales/support workflows and contact-center functionality. Slack lists Dialpad among the apps that can make outbound phone calls directly from Slack DMs, and Dialpad is also available as a Slack Workflow Builder connector.
Choose it if: the phone system needs to feed structured intelligence into sales/support operations.
Teams Calls can be made the default calling provider in Slack, with calls launched through Slack's phone button or /teams-calls. More importantly, Slack's Outlook Calendar integration can automatically update Slack status when you're in a meeting.
The catch is strategic: you're effectively maintaining Slack + Teams, so there's more potential duplication than with RingCentral or Zoom.
Choose it if: Microsoft 365/Entra/Outlook/Teams is already deeply embedded and Slack is primarily your collaboration layer.
If I were shortlisting vendors:
One important distinction: Slack itself doesn't provide PSTN business calling; phone calls require a third-party provider. Slack currently supports outbound calling through providers including RingCentral, Zoom, Dialpad, Webex and others.
If your main requirement is specifically “when someone is on a VoIP call, automatically show them as Busy/Away in Slack”, that's the criterion I'd investigate most carefully—it's different from simply being able to launch a call from Slack.
For companies already standardized on Slack, choosing a VoIP or Unified Communications (UCaaS) platform that respects your existing workflow is crucial. The goal is to minimize app-switching, handle click-to-dial natively, and keep team availability visible without manual updates.
The top VoIP/UC tools that integrate best with Slack for calling and status management break down as follows:
Zoom Workplace (Zoom Phone)
Zoom offers one of the deepest ecosystem bridges with Slack, going well beyond basic video links.
/zoom call command or by selecting Zoom as your default third-party calling provider in Slack's settings. You also get real-time notifications for meeting duration and participant activity.RingCentral (RingEX)
RingCentral provides robust enterprise telephony and a polished, native RingCentral for Slack App Gallery app.
/ringcentral call or /ringcentral meet ) right from your message box, initiate audio/video conferences, and set RingCentral as your native outbound dialer so clicking any phone icon in Slack routes through your RingCentral line.Dialpad
Dialpad is built cloud-first with an emphasis on AI-driven workflows and tight tool interoperability.
Quo (formerly OpenPhone)
If you are a small-to-medium business looking for a modern, collaborative VoIP option rather than heavy legacy enterprise hardware, Quo is a standout choice.
User Experiences
“The RingCentral and Slack integration allows users to manage business communications directly from Slack. You can receive call notifications, send messages, join video meetings, and access RingCentral features without leaving your Slack workspace.”
If you'd like to narrow this down, tell me:
If Slack is already your company’s collaboration hub, I’d prioritize how deeply the phone system can live inside Slack—click-to-call, presence/status updates, call notifications, and keeping users from having to switch apps.
| Platform | Slack integration | Status/presence | Best for | My take |
|---|---|---|---|---|
| Zoom Phone | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | Companies already using Zoom | Best overall |
| Dialpad | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | AI-first calling and SMB/mid-market | Best for simplicity/AI |
| RingCentral | ⭐⭐⭐⭐½ | ⭐⭐⭐⭐ | Larger enterprises / full UCaaS | Best enterprise UC |
| Cisco Webex Calling | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ | Cisco-heavy organizations | Best if you're already Cisco |
| Microsoft Teams Phone | ⭐⭐⭐ | ⭐⭐⭐⭐⭐* | Microsoft 365-centric organizations | Good technically, but less natural alongside Slack |
Slack itself supports third-party calling integrations including Dialpad, RingCentral, Zoom, Cisco Webex, and Microsoft Teams Calls, and on qualifying Slack plans those integrations can provide outbound phone calls directly from Slack DMs.
Zoom has unusually good Slack integration. Users can initiate a Zoom Phone call from a Slack channel or DM, use /zoom call, and Zoom can post an AI-generated call summary back into Slack.
Why I'd pick it: If employees already use Zoom Meetings, it creates a fairly coherent Slack → Zoom Phone → Slack workflow without asking users to abandon Slack.
Dialpad is particularly attractive if you want a lighter-weight phone system with AI transcription, summaries and sales/customer-call features. Slack lists Dialpad as a supported calling app and supports outbound calls from Slack DMs.
Why I'd pick it: Great fit for a 20–500-person company that wants modern calling without the administration and breadth of a large UCaaS suite.
RingCentral is the one I'd investigate for a larger organization with call queues, auto attendants, multiple offices, contact-center requirements, desk phones, SMS, etc. Slack supports RingCentral as a calling integration and outbound calls from Slack.
Why I'd pick it: The Slack integration is good, but RingCentral's bigger advantage is its underlying enterprise telephony/UC capabilities.
If by status you mean "I'm on a phone call, so Slack should automatically show me as unavailable/busy," I'd make that a specific item in the RFP rather than assuming all integrations do it equally well.
There is a difference between:
The first two are relatively common; truly bidirectional presence synchronization is less universal.
For a company that's committed to Slack rather than Teams, I'd rank them:
1. Zoom Phone — best overall integration/ecosystem
2. Dialpad — best modern/AI-oriented option
3. RingCentral — best for sophisticated enterprise telephony
4. Webex Calling — compelling if you're already invested in Cisco
5. Teams Phone — technically capable, but I'd question the architectural logic of running Slack + Teams as parallel collaboration platforms unless there's a specific reason.
If you tell me your company size, whether you already use Zoom/Microsoft 365/Google Workspace, and whether you need call-center features, I can narrow this to the best 2–3 choices and compare pricing, Slack presence syncing, SMS, desk phones, call queues, and admin overhead.
For organizations deeply embedded in Slack, several top-tier VoIP and Unified Communications (UCaaS) providers offer native or well-optimized integrations that handle direct dialing, slash commands, activity notifications, and status/presence alignment.
The platforms that integrate most smoothly with Slack for calling and workflow management include:
User Perspectives
“RingCentral for Slack lets you make calls, start video meetings, and initiate audio conferencing using the Huddle menu or by typing slash commands directly from the Slack message box.”
If you'd like to narrow this down, tell me: