CallHarbor
CallHarbor is a Michigan-based, privately held UCaaS provider offering an all-inclusive, per-seat cloud platform — voice, SMS/MMS, video, call center, and AI receptionists — to small and mid-sized businesses across healthcare, legal, real estate, retail, transportation, financial services, government, and nonprofit verticals.
- Company typePrivate
- Founded2006
- HeadquartersDearborn, United States
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What CallHarbor does
CallHarbor is a Michigan-based, privately held Unified Communications as a Service (UCaaS) provider founded in 2006, delivering a cloud-hosted business phone and collaboration platform to small and mid-sized businesses across healthcare, legal, real estate, retail, transportation, financial services, government, and nonprofit verticals. The company sells voice (VoIP), SMS/MMS messaging, browser-based video conferencing, call center functionality (queues, auto attendants, live monitoring, recording), mobile apps, web softphone, and an AI-powered receptionist feature (CallHarborAI) for sentiment analysis, transcription, and intelligent call routing. The platform is architecturally cloud-native with geographic redundancy across three US points of presence (Detroit, Atlanta, Phoenix), two-factor authentication, single sign-on (including Apple Sign-In and Microsoft 365 SSO), and DDoS mitigation via Cloudflare Magic Transit.
The product stack is delivered as a single, all-inclusive plan — no tiered user access, no add-on charges for features, support, installation, or maintenance, with hardware (desk phones) supplied on rental with free upgrades. All features (voice, messaging, video, call center, AI, analytics, integrations) are bundled into one per-seat monthly price, with quote-based sales (exact pricing not publicly listed). The platform integrates with 60+ third-party systems, including Salesforce, HubSpot, Zoho, SugarCRM, Maximizer, AutoTask, ConnectWise, Zendesk, NetSuite, Microsoft Dynamics, Microsoft Teams, and several real estate and field service CRMs.
CallHarbor goes to market through direct phone- and web-based sales (833-363-VOIP, 313-263-3663) with a dedicated onboarding specialist per customer, supplemented by a Managed Service Provider (MSP) channel partner program. All sales and support are US-based, in-house, with 24/7/365 coverage and a stated average hold time under 8 seconds. The company is led by CEO Frank Kadaf, has 11–50 employees, and has been recognized with the TMC Unified Communications Product of the Year Award for five consecutive years (2022–2026), the INTERNET TELEPHONY Cloud VoIP Excellence Award for nine consecutive years (2017–2025), and the Michigan 50 Companies to Watch award in 2026. No external funding rounds or revenue figures are disclosed.
CallHarbor firmographics
Firmographics- Name
- CallHarbor
- Legal name
- CallHarbor
- Website
- https://callharbor.com
- Company type
- Private
- Founded year
- 2006
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- CallHarbor is a Michigan-based, privately held UCaaS provider offering an all-inclusive, per-seat cloud platform — voice, SMS/MMS, video, call center, and AI receptionists — to small and mid-sized businesses across healthcare, legal, real estate, retail, transportation, financial services, government, and nonprofit verticals.
- Ownership category
- akta.pro rank
CallHarbor industry classification
Industry- Product category
- Unified Communications as a Service (UCaaS)
- NAICS
- Wired Telecommunications Carriers (517111)
- SIC
- Telephone Communications (No Radiotelephone) (4813), Services-Telephone Interconnect Systems (7385)
- akta.pro primary industry
- UCaaS Platforms & Suites (HDAIAHAA)
- akta.pro secondary industries
- Cloud PBX & Hosted Telephony (HDAIAHAB), Collaboration & Unified Communications Management (UCaaS/VoIP) (BPAEABAK), Unified Communications & Contact Center for Workplace (UCaaS/VoIP, Meeting Rooms) (BPAEAIAE), CPaaS (Programmable Voice, SMS, Video APIs) (HDAIAHAG), Unified Communications (UCaaS) Apps (BPAMACAE)
Keywords
Where CallHarbor is headquartered
LocationHeadquarters
- HQ city
- Dearborn
- HQ country
- United States
- HQ region
- North America
Offices4 records
Markets served
CallHarbor business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Infrastructure, Operations, Marketing or Sales
Revenue model
- Per-Seat UCaaS Subscription: CallHarbor generates revenue through monthly per-seat subscription fees. The company operates on a single, all-inclusive plan model — there are no tiered user access options or add-on charges for features, support, installation, or maintenance. All features (voice, messaging, video, call center, AI, analytics, integrations) are included in the base user price. The company also offers hardware (desk phones) on a rental basis as part of its service offering, with free upgrades over time.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Per seat | Monthly | All-Inclusive Single Plan — All features included, no add-ons required |
Go-to-market motion2 records
Distribution channels2 records
Marketing channels6 records
CallHarbor product offering
Product offeringCore offering
CallHarbor sells a fully hosted, cloud-native Unified Communications as a Service (UCaaS) platform delivered on a single all-inclusive monthly per-seat subscription. The platform bundles enterprise VoIP voice, SMS/MMS business messaging, browser-based video conferencing, mobile and web softphones, call center functionality, auto attendants, call recording, analytics, and AI-powered receptionists with no tiered plans, add-on fees, or maintenance charges. Hardware (desk phones) is rented with free upgrades, and 24/7 US-based in-house support is included.
Product overview
CallHarbor is a Unified Communications as a Service (UCaaS) provider offering a single, all-inclusive platform that bundles voice (VoIP), messaging (SMS/MMS), video conferencing, call center management, and AI capabilities into one integrated solution. The core product is the CallHarbor Unified Communications Platform, which includes CallHarborAI for sentiment analysis, call transcription, and 24/7 AI Receptionist functionality. Additional modules include the CallHarbor Web Phone (browser-based softphone), Mobile App (iOS/Android), Manager Portal (administration dashboard), Enhanced eFax (digital fax), Video Conferencing (browser-based), and Call Center functionality (queues, routing, monitoring, recording). All features are included in one plan without tiered pricing or hidden fees.
Differentiator
Problem solved
Functional benefit
Brands
- CallHarborAI: AI-powered feature offering sentiment analysis, call transcription, and intelligent insights for CallHarbor's unified communications platform.
Products and services
- CallHarbor Unified Communications Platform (UCaaS) A fully hosted Unified Communications as a Service (UCaaS) platform delivered on a single all-inclusive subscription, bundling enterprise VoIP voice, SMS/MMS messaging, auto attendants, call queues, call recording, analytics, call center, and CallHarborAI into one service. Targeted at SMB and mid-market businesses replacing legacy on-premise PBX systems.
- CallHarborAI AI-powered feature product providing sentiment analysis, call transcription, AI-driven intelligent insights, and an autonomous AI Receptionist that answers calls 24/7. Built into the CallHarbor UCaaS platform to help businesses improve customer interactions, capture after-hours calls, and gain conversation analytics.
- CallHarbor Video Conferencing Browser-based video conferencing service that requires no downloads, supporting Chrome, Safari, Firefox, and Edge. Features include one-click meeting access, calendar integration, meeting recordings, and automatic updates. Targeted at business teams needing frictionless remote meetings.
- CallHarbor Enhanced eFax
Quantifiable outcome
- Support hold time under 8 seconds on average, with no transfers or repair tickets
- +3 more outcomes
Companies that use CallHarbor
Customer profileNamed customers29 records
Segments12 records
Ideal customer profiles2 records
CallHarbor technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration69 records
AI capability8 records
Feature12 records
CallHarbor partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- CloudflarecoreCallHarbor utilizes Cloudflare Magic Transit as its DDoS mitigation solution, protecting its phone system infrastructure from distributed denial-of-service attacks and ensuring service availability and uptime for customers.
Scale indicators4 records
Recent moves6 records
Expansion highlights5 records
CallHarbor competitors and assessment
Company assessmentBroad incumbents
- RingCentral: RingCentral is a leading public UCaaS provider offering cloud voice, messaging, video, and contact center to SMB and enterprise customers globally. It is a broad incumbent in the same category CallHarbor serves, with overlapping features (auto attendants, call queues, integrations) but much larger scale and global reach.
- Zoom (Zoom Phone): Zoom Phone is the UCaaS offering from Zoom, tightly bundled with its flagship video platform and increasingly integrated with Zoom AI Companion. It directly competes with CallHarbor for SMB voice buyers, and Microsoft Teams Phone bundling dynamics make Zoom one of the most material competitive threats.
- Microsoft (Teams Phone): Microsoft Teams Phone is the UCaaS capability within Microsoft 365, leveraging Teams' massive installed base. It is a broad incumbent that increasingly commoditizes standalone UCaaS by bundling voice with productivity, posing the largest structural threat to SMB UCaaS specialists like CallHarbor.
- Cisco (Webex Calling): Cisco Webex Calling is the UCaaS offering from Cisco, targeting mid-market and enterprise with deep integration to Cisco networking and collaboration hardware. It overlaps with CallHarbor at the mid-market and SMB edge, with a broader portfolio and significantly greater scale.
Direct peers
- 8x8: 8x8 is a public UCaaS and CCaaS provider offering cloud voice, video, contact center, and analytics for SMB through enterprise. It competes head-to-head with CallHarbor on all-inclusive per-seat voice plans and integrations, with comparable target segments including healthcare and financial services.
- Vonage (now part of Ericsson): Vonage provides cloud communications, UCaaS, and CPaaS APIs. Its UCaaS offering directly competes with CallHarbor for SMB and mid-market customers, with comparable feature breadth across voice, messaging, video, and integrations.
- Nextiva: Nextiva is a closely held UCaaS and contact center provider targeting SMB and mid-market, offering all-in-one voice, video, chat, CRM, and analytics. Its single-platform, SMB-focused go-to-market is highly comparable to CallHarbor's all-inclusive positioning.
- Dialpad: Dialpad is a UCaaS provider built on proprietary AI for voice transcription, sentiment, and real-time coaching. It competes directly with CallHarbor on AI-powered voice (CallHarborAI vs Dialpad Ai), targeting SMB and mid-market with per-seat subscriptions.
- Ooma: Ooma offers cloud-based VoIP and UCaaS for SMBs and consumers, including Ooma Office, with simple per-user pricing. Its SMB-focused, all-inclusive approach and vertical-agnostic marketing overlap closely with CallHarbor's positioning.
- GoTo (GoTo Connect): GoTo Connect is the UCaaS arm of GoTo (formerly LogMeIn), offering cloud phone, video, and contact center for SMB and mid-market. It targets the same buyer profile as CallHarbor with bundled per-seat pricing.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks7 records
Key highlights7 records
Customer concentration
CallHarbor social profiles
Digital presenceCallHarbor compliance and trust
Trust signalCompliance3 records
CallHarbor financial estimates
Financial estimateRevenue estimate
Valuation estimate
CallHarbor leadership team
Management profileNumber of profiles
Profiles2 records
CallHarbor funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
CallHarbor M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about CallHarbor
What does CallHarbor do?
CallHarbor sells a fully hosted, cloud-native Unified Communications as a Service (UCaaS) platform delivered on a single all-inclusive monthly per-seat subscription. The platform bundles enterprise VoIP voice, SMS/MMS business messaging, browser-based video conferencing, mobile and web softphones, call center functionality, auto attendants, call recording, analytics, and AI-powered receptionists with no tiered plans, add-on fees, or maintenance charges. Hardware (desk phones) is rented with free upgrades, and 24/7 US-based in-house support is included.
Is CallHarbor a public or private company?
CallHarbor is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was CallHarbor founded?
CallHarbor was founded in 2006. It employs 11 to 50 people.
Where is CallHarbor based?
CallHarbor is headquartered in Dearborn, United States, in the North America region.
How does CallHarbor make money?
One revenue line is on record: per-Seat UCaaS Subscription.
Who are CallHarbor's main competitors?
Broad incumbents on record are RingCentral, Zoom (Zoom Phone), Microsoft (Teams Phone) and Cisco (Webex Calling). Direct peers are 8x8, Vonage (now part of Ericsson), Nextiva, Dialpad, Ooma and GoTo (GoTo Connect).
Does CallHarbor have an API?
Yes. CallHarbor offers an open API that enables integration with third-party systems and allows VoIP to streamline processes through built-in CRM integrations.
What industry is CallHarbor in?
CallHarbor's product category is Unified Communications as a Service (UCaaS). Its primary akta.pro industry code is HDAIAHAA, UCaaS Platforms & Suites, with a secondary code of HDAIAHAB, Cloud PBX & Hosted Telephony. Its NAICS code is 517111 and its SIC code is 4813.