GetApp offers objective, independent research and verified user reviews. We may earn a referral fee when you visit a vendor through our links.
Our commitment
Independent research methodology
Our researchers use a mix of verified reviews, independent research, and objective methodologies to bring you selection and ranking information you can trust. While we may earn a referral fee when you visit a provider through our links or speak to an advisor, this has no influence on our research or methodology.
Verified user reviews
GetApp maintains a proprietary database of millions of in-depth, verified user reviews across thousands of products in hundreds of software categories. Our data scientists apply advanced modeling techniques to identify key insights about products based on those reviews. We may also share aggregated ratings and select excerpts from those reviews throughout our site.
Our human moderators verify that reviewers are real people and that reviews are authentic. They use leading tech to analyze text quality and to detect plagiarism and generative AI.
How GetApp ensures transparency
GetApp lists all providers across its website—not just those that pay us—so that users can make informed purchase decisions. GetApp is free for users. Software providers pay us for sponsored profiles to receive web traffic and sales opportunities. Sponsored profiles include a link-out icon that takes users to the provider’s website.
Slack vs Whistle Messaging Comparison (2026)
Add to Compare
Compare similar apps

Microsoft Teams
4.5

Connecteam
4.6

Google Workspace
4.7
Good recommendations?

Slack
5
17.4K
4
5.7K
3
912
2
127
1
48
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews

Whistle Messaging
5
96
4
30
3
6
2
0
1
0
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Overview
Slack is a single workspace that connects users with the people and tools they work with everyday, no matter where they are or what they do
#1 Guest Messaging Platform that Integrates with Property Management Systems
- Platforms supported
- Web-based
- iPhone app
- Android app
- Windows Phone app
- Typical customers
- Freelancers
- Small businesses
- Mid size businesses
- Large enterprises
- Customer support
- Phone
- Online
- Knowledge base
- Video tutorials
- Platforms supported
- Web-based
- iPhone app
- Android app
- Windows Phone app
- Typical customers
- Freelancers
- Small businesses
- Mid size businesses
- Large enterprises
- Customer support
- Phone
- Online
- Knowledge base
- Video tutorials
Video & Screenshots
Pricing
User reviews
4.7
24.2K
5
4
3
2
1
17.4K
5.7K
912
127
48
- Value for money
- Ease of use
- Features
- Customer support
4.7
132
5
4
3
2
1
96
30
6
0
0
- Value for money
- Ease of use
- Features
- Customer support
Pros
Emilia W.
Network Support Coordinator

Andrea L.
Innovation Manager

James W.
Salesforce Administrator
Pros
Luciano N.
Senior Film Technician
Luciano N.
Senior Film Technician
Bart J.
Owner
Cons
Cristiano F.
Consultant

Alicia R.
Director, Business Development

Enish S.
Business Administrator
Cons
Bart J.
Owner
Laura S.
Owner/CEO
Carolina G.
Innkeeper
- Vendor responds to reviews
- Last review4 days ago
- Vendor responds to reviews
- Last review5 months ago
Key features
- Total features106
- @mentions
- AI/Machine Learning
- API
- Access Controls/Permissions
- Activity Dashboard
- Activity Tracking
- Activity/News Feed
- Alerts/Notifications
- Archiving & Retention
- Audio Calls
- Audio Capture
- Authentication
- Autoresponders
- Batch Communications
- Billing & Invoicing
- Brainstorming
- CRM
- Calendar Management
- Call Conferencing
- Call Recording
- Call Routing
- Canned Responses
- Chat/Messaging
- Chatbot
- Collaboration Tools
- Commenting/Notes
- Communication Management
- Compliance Management
- Conferencing
- Contact Management
- Content Delivery
- Content Management
- Content Sharing
- Customizable Branding
- Customizable Templates
- Discussions/Forums
- Document Management
- Drag & Drop
- Employee Directory
- Employee Engagement
- Employee Management
- Encryption
- Feedback Management
- File Sharing
- File Transfer
- Filtering
- For Developers
- For Sales Teams/Organizations
- For Vacation Rentals
- Front Desk Management
- Full Text Search
- Group Management
- Group Messaging
- Guest Experience Management
- Guest Messaging
- Housekeeping Management
- Interaction Tracking
- Knowledge Base Management
- Live Chat
- Maintenance Management
- Marketing Automation
- Mass Texting
- Meeting Management
- Meeting Notes
- Member Directory
- Messaging
- Mobile Access
- Moderation
- Monitoring
- Multi-Channel Communication
- Multi-Language
- Multi-Property
- Multi-User Collaboration
- Multiple Data Sources
- Natural Language Processing
- Notes Management
- Offline Form
- On-Demand Communications
- Online Booking
- Personalization
- Point of Sale (POS)
- Presentation Streaming
- Prioritization
- Private Chat
- Proactive Chat
- Productivity Tools
- Projections
- Read Receipts
- Real Time Synchronization
- Real-Time Chat
- Real-Time Data
- Real-Time Notifications
- Real-Time Updates
- Real-time Consumer-facing Chat
- Recording
- Reminders
- Remote Access/Control
- Remote Support
- Reporting & Statistics
- Reporting/Analytics
- Reservations Management
- Reviews Management
- SSL Security
- Scheduling
- Screen Capture
- Screen Recording
- Screen Sharing
- Search/Filter
- Server Monitoring
- Single Sign On
- Spa/Activity Management
- Support Ticket Management
- Surveys & Feedback
- Tagging
- Task Management
- Team Collaboration
- Template Management
- Templates
- Third-Party Integrations
- To-Do List
- Transcripts/Chat History
- Troubleshooting
- Two Way Audio & Video
- Two-Factor Authentication
- Two-Way Audio & Video
- User Management
- Version Control
- Video Chat
- Video Conferencing
- Video Support
- Visitor Management
- Voice Mail
- Whiteboard
- Widgets
- Work Order Management
- Workflow Management
- Total features47
- @mentions
- AI/Machine Learning
- API
- Access Controls/Permissions
- Activity Dashboard
- Activity Tracking
- Activity/News Feed
- Alerts/Notifications
- Archiving & Retention
- Audio Calls
- Audio Capture
- Authentication
- Autoresponders
- Batch Communications
- Billing & Invoicing
- Brainstorming
- CRM
- Calendar Management
- Call Conferencing
- Call Recording
- Call Routing
- Canned Responses
- Chat/Messaging
- Chatbot
- Collaboration Tools
- Commenting/Notes
- Communication Management
- Compliance Management
- Conferencing
- Contact Management
- Content Delivery
- Content Management
- Content Sharing
- Customizable Branding
- Customizable Templates
- Discussions/Forums
- Document Management
- Drag & Drop
- Employee Directory
- Employee Engagement
- Employee Management
- Encryption
- Feedback Management
- File Sharing
- File Transfer
- Filtering
- For Developers
- For Sales Teams/Organizations
- For Vacation Rentals
- Front Desk Management
- Full Text Search
- Group Management
- Group Messaging
- Guest Experience Management
- Guest Messaging
- Housekeeping Management
- Interaction Tracking
- Knowledge Base Management
- Live Chat
- Maintenance Management
- Marketing Automation
- Mass Texting
- Meeting Management
- Meeting Notes
- Member Directory
- Messaging
- Mobile Access
- Moderation
- Monitoring
- Multi-Channel Communication
- Multi-Language
- Multi-Property
- Multi-User Collaboration
- Multiple Data Sources
- Natural Language Processing
- Notes Management
- Offline Form
- On-Demand Communications
- Online Booking
- Personalization
- Point of Sale (POS)
- Presentation Streaming
- Prioritization
- Private Chat
- Proactive Chat
- Productivity Tools
- Projections
- Read Receipts
- Real Time Synchronization
- Real-Time Chat
- Real-Time Data
- Real-Time Notifications
- Real-Time Updates
- Real-time Consumer-facing Chat
- Recording
- Reminders
- Remote Access/Control
- Remote Support
- Reporting & Statistics
- Reporting/Analytics
- Reservations Management
- Reviews Management
- SSL Security
- Scheduling
- Screen Capture
- Screen Recording
- Screen Sharing
- Search/Filter
- Server Monitoring
- Single Sign On
- Spa/Activity Management
- Support Ticket Management
- Surveys & Feedback
- Tagging
- Task Management
- Team Collaboration
- Template Management
- Templates
- Third-Party Integrations
- To-Do List
- Transcripts/Chat History
- Troubleshooting
- Two Way Audio & Video
- Two-Factor Authentication
- Two-Way Audio & Video
- User Management
- Version Control
- Video Chat
- Video Conferencing
- Video Support
- Visitor Management
- Voice Mail
- Whiteboard
- Widgets
- Work Order Management
- Workflow Management
Integrations
- Total integrations173
- 5pm
- Aha!
- Airbrake
- Aircall
- Airtable
- Amplitude
- Any.do
- AppSignal
- Asana
- Assembla
- Automile
- Azuqua
- AzureDesk
- Baremetrics
- Beanstalk
- Beds24
- Betterworks
- BigTime
- Bitbucket
- Blitz
- Bonusly
- Box
- Brand24
- Breezy
- BugSnag
- CATS
- Calamari
- Calendly
- CallPage
- Callmaker
- Cayzu
- Chartbeat
- CheckMarket
- Checkfront
- CircleCI
- ClearSlide
- ClickMeeting
- ClickUp
- Clock PMS
- ClockIt
- Cloudbeds
- Confluence
- Continu
- Copper
- Databox
- Datadog
- Dropbox
- Dropbox Sign
- Egnyte
- Envoy
- Favro
- Figma
- Flow
- FlowVella
- Freshdesk
- Freshservice
- Front
- Geekbot
- GetResponse
- GitHub
- GitLab
- GoCo
- GoTo Meeting
- Google Calendar
- Google Workspace
- Greenhouse
- HaloPSA
- HappyFox Chat
- HappyFox Help Desk
- Help Scout
- Helply
- Hive
- Hoopla
- Hootsuite
- HotGloo
- HubSpot CRM
- HubSpot Marketing Hub
- IFTTT
- ITM Platform
- Infor HMS
- Intervals
- JIRA Service Management
- Jenkins
- Jira
- Jonas Chorum
- Kixie PowerCall & SMS
- Kudos
- Lattice
- LeadDyno
- Learn:Up
- Lessonly
- Lever
- Librato
- Lime Connect
- LiveAgent
- Localize
- Locowise
- Lucidchart
- MVISION Cloud
- Maestro PMS
- Mailjet
- MeisterTask
- Mention
- Mews
- Microsoft Outlook
- Microsoft Teams
- Microsoft To Do
- Miro
- Mitratech Hire
- Nagios XI
- Netskope One Platform
- New Relic
- Notion
- Okta
- OnRes
- OpenHotel PMS
- OpsGenie
- Ortto
- PagerDuty
- Papertrail
- PayPal Payments
- Polly
- PractiTest
- Procurify
- ProdPad
- ProductPlan
- Pulseway
- Qualtrics Market Research
- Quore
- Qwilr
- Rainforest QA
- Raven Tools
- Raygun
- Re:amaze
- Redbooth
- Repuso
- Rollbar
- RoomKeyPMS
- Roommaster
- Sage HR
- Salesforce Sales Cloud
- SatisMeter
- SendPulse
- Setmore
- Sisense
- SkyTouch Hotel OS
- Small Improvements
- SnapComms
- SolarWinds Pingdom
- SolarWinds Service Desk
- Spinify
- Stripe Payments
- SupportBee
- SurveyMonkey
- TINT
- Talkdesk
- Tellent Recruitee
- ThinkReservations
- Time Doctor
- TimeCamp
- Todoist
- Trello
- TriNet HR Plus
- Twine
- Twitter/X
- UpKeep
- UpRaise
- Usersnap
- VibeCatch
- Vigil
- WebHR
- Webex Suite
- Wishpond
- Woopra
- Zapier
- Zendesk Suite
- Zoho Billing
- Zoho Books
- Zoho Expense
- Zoho Inventory
- Zoho Invoice
- Zoho Projects
- Zoom Workplace
- absence.io
- innRoad
- monday AI Work Platform
- rezStream
- smartQ
- truDigital
- Total integrations17
- 5pm
- Aha!
- Airbrake
- Aircall
- Airtable
- Amplitude
- Any.do
- AppSignal
- Asana
- Assembla
- Automile
- Azuqua
- AzureDesk
- Baremetrics
- Beanstalk
- Beds24
- Betterworks
- BigTime
- Bitbucket
- Blitz
- Bonusly
- Box
- Brand24
- Breezy
- BugSnag
- CATS
- Calamari
- Calendly
- CallPage
- Callmaker
- Cayzu
- Chartbeat
- CheckMarket
- Checkfront
- CircleCI
- ClearSlide
- ClickMeeting
- ClickUp
- Clock PMS
- ClockIt
- Cloudbeds
- Confluence
- Continu
- Copper
- Databox
- Datadog
- Dropbox
- Dropbox Sign
- Egnyte
- Envoy
- Favro
- Figma
- Flow
- FlowVella
- Freshdesk
- Freshservice
- Front
- Geekbot
- GetResponse
- GitHub
- GitLab
- GoCo
- GoTo Meeting
- Google Calendar
- Google Workspace
- Greenhouse
- HaloPSA
- HappyFox Chat
- HappyFox Help Desk
- Help Scout
- Helply
- Hive
- Hoopla
- Hootsuite
- HotGloo
- HubSpot CRM
- HubSpot Marketing Hub
- IFTTT
- ITM Platform
- Infor HMS
- Intervals
- JIRA Service Management
- Jenkins
- Jira
- Jonas Chorum
- Kixie PowerCall & SMS
- Kudos
- Lattice
- LeadDyno
- Learn:Up
- Lessonly
- Lever
- Librato
- Lime Connect
- LiveAgent
- Localize
- Locowise
- Lucidchart
- MVISION Cloud
- Maestro PMS
- Mailjet
- MeisterTask
- Mention
- Mews
- Microsoft Outlook
- Microsoft Teams
- Microsoft To Do
- Miro
- Mitratech Hire
- Nagios XI
- Netskope One Platform
- New Relic
- Notion
- Okta
- OnRes
- OpenHotel PMS
- OpsGenie
- Ortto
- PagerDuty
- Papertrail
- PayPal Payments
- Polly
- PractiTest
- Procurify
- ProdPad
- ProductPlan
- Pulseway
- Qualtrics Market Research
- Quore
- Qwilr
- Rainforest QA
- Raven Tools
- Raygun
- Re:amaze
- Redbooth
- Repuso
- Rollbar
- RoomKeyPMS
- Roommaster
- Sage HR
- Salesforce Sales Cloud
- SatisMeter
- SendPulse
- Setmore
- Sisense
- SkyTouch Hotel OS
- Small Improvements
- SnapComms
- SolarWinds Pingdom
- SolarWinds Service Desk
- Spinify
- Stripe Payments
- SupportBee
- SurveyMonkey
- TINT
- Talkdesk
- Tellent Recruitee
- ThinkReservations
- Time Doctor
- TimeCamp
- Todoist
- Trello
- TriNet HR Plus
- Twine
- Twitter/X
- UpKeep
- UpRaise
- Usersnap
- VibeCatch
- Vigil
- WebHR
- Webex Suite
- Wishpond
- Woopra
- Zapier
- Zendesk Suite
- Zoho Billing
- Zoho Books
- Zoho Expense
- Zoho Inventory
- Zoho Invoice
- Zoho Projects
- Zoom Workplace
- absence.io
- innRoad
- monday AI Work Platform
- rezStream
- smartQ
- truDigital
Alternatives
Explore similar apps





