Business VoIP & Cloud Phone Systems

Recruitment-focused VoIP platform with native ATS integrations for Greenhouse, Lever, and Workable.

Editor's takeCloudTalk builds recruitment-specific tools on top of standard VoIP, with two-way sync to Greenhouse, Lever, Workable, and Bullhorn that logs calls straight into candidate profiles. It holds SOC 2 Type II and ISO 27001 certification and counts DHL and Uber among its customers. The catch is pricing structure: essentials like the Power Dialer and Salesforce integration sit behind the $49 per month Expert tier.

On-premise or virtual PBX with TwinStar hardware failover and perpetual, no-monthly-fee extension licensing.

Editor's takeXorcom's TwinStar technology gives CompletePBX full dual-server failover, a level of redundancy most SMB VoIP tools skip. Appliances like the Swift ship with extensions included under a perpetual license, avoiding the recurring per-user fees common in cloud PBX. The mobile CloudPhone app has needed repeated stability patches, and CRM integrations often depend on third-party connectors rather than native modules.

Managed VoIP service with a single all-inclusive price and a dedicated project manager.

Editor's takeVotacall sells a single bundle, Votacall One, at $22 per user monthly with unlimited voice, video, SMS and fax included, so there is no tiered upsell path to navigate. Every customer gets a dedicated project manager for onsite installation and unlimited training, services many competitors charge extra for. Founded in 2002 and BBB-accredited since 2006 with an A+ rating, it has the track record of an established provider despite fewer reviews on sites like G2. The real catch is contract flexibility. Terms require a 60-to-90-day cancellation notice before renewal, and the mobile app has documented lag loading text messages.

A unified video and VoIP phone system with 99.999% reliability across 49+ countries.

Editor's takeZoom Phone reached 10 million paid seats by October 2025. Its 'elevate to meeting' feature turns any call into a video meeting with one click. The value story gets murkier at scale, since toll-free minutes and deeper analytics both cost extra.

Cloud voice platform with deep native HubSpot and Salesforce call logging.

Editor's takeAircall logs calls, SMS, and transcripts directly into HubSpot or Salesforce deals and tickets, a depth of native integration among its 100-plus connectors that sales teams rely on daily. It reached Centaur status by passing $100 million in Annual Recurring Revenue and now serves over 20,000 customers. Every plan requires a minimum of 3 users, though, at $30 each, and AI Assist and Analytics+ cost $9 and $15 per license on top of the base price.

Managed VoIP provider offering Zoom and NEC systems with mandatory pre-deployment network testing.

Editor's takeServiceMark installs a diagnostic that simulates more than 1,000 calls over a minimum one-week test before any line goes live, a rare pre-deployment step in VoIP. It is a certified Zoom and NEC partner and has operated since 1995 with an A+ BBB rating. One platform limitation carries through. Zoom Phone, a core offering, restricts SMS on main auto-attendant lines, often requiring add-ons to work around.

A cloud VoIP system for construction firms with pre-configured Yealink phones and US-based white-glove support.

Editor's takeSoundCurve's plug-and-play hardware and fast US support genuinely suit construction crews without dedicated IT staff. Teams wanting CRM sync or Procore-style integrations should confirm those land on the plan tier they're budgeting for.

Cloud phone system for construction crews, switching calls between desktop and mobile.

Editor's takeULTATEL guarantees 99.999% uptime and made the 2024 Inc. 5000 list after 305% growth over three years. Its Hub app lets field teams flip calls smoothly between desktop and mobile, backed by 24/7 US-based support with a reported 94% first-contact resolution rate. Pricing starts at $15.95 per user a month, but long-term contracts can carry termination fees equal to the remaining balance if canceled early.

Enterprise VoIP and POTS-replacement platform consolidating multi-location communications billing.

Editor's takeGranite's patented EPIK device replaces aging copper POTS lines while staying compatible with fire alarms, elevators and point-of-sale systems, and it holds FDNY approval for NFPA 72 fire-safety compliance. At $1.85 billion in annual revenue serving two-thirds of the Fortune 100, its scale is real. The most consistent complaint is billing, with BBB reviews describing confusing invoices and difficult dispute resolution.

UK-focused VoIP phone system for HVAC and plumbing businesses with native Simpro and ServiceM8 integration.

Editor's takeHVAC IT Services wraps the CallSwitch One platform in support built for UK trades. Native integrations connect it to Simpro, ServiceM8 and FieldEdge, and flat-rate billing avoids ISDN's unpredictable costs. The mobile app has rough edges though, with Trustpilot reviewers describing calls stuck on 'Connecting.'

A concierge VoIP and managed IT provider for Bay Area small businesses.

Editor's takeLevelUp MSP wraps standard VoIP in a 'Concierge Support' model with seasoned engineers. That local-first approach has earned a perfect 5-star rating across 39 Google reviews over 20-plus years. The tradeoff is reach, since on-site visits stay confined to a 100-mile radius of San Jose.

AI-powered VoIP built into ServiceTitan, using Second Chance Leads to recover unbooked calls automatically.

Editor's takePhones Pro runs on Dialpad's infrastructure inside ServiceTitan, so calls, transcripts, and recordings attach straight to job records. Its Second Chance Leads feature flags unbooked calls for follow-up, and ServiceTitan says over half of users who use it say the feature alone covers the monthly bill. Pricing is not published, and one Reddit user cites a cost near $500 a month for the add-on.

A cloud phone platform with native Microsoft Teams calling and a rare 100 percent uptime guarantee.

Editor's takeFusion Connect backs its uptime with an actual 100 percent guarantee when SD-WAN and UCaaS are bundled together, well above the industry's typical 99.999 percent SLA. Morgan Stanley ownership and G2 Leader recognition support its enterprise standing. Contracts auto-renew yearly unless cancelled 45 days out, and early termination fees draw real customer complaints.

Managed VoIP provider combining Microsoft Teams and Switchvox with compliance and ERP integration expertise.

Editor's takeLBMC layers HIPAA and HITECH compliance on top of standard platforms like Microsoft Teams Voice and Switchvox, positioning itself for regulated industries rather than DIY buyers. Its security team is named the compliance provider of choice by three state hospital associations, and deep partnerships with Sage Intacct and Microsoft Dynamics mean phone data ties directly into a client's ERP. Because LBMC resells rather than builds the underlying software, feature updates and core bug fixes depend on Sangoma and Microsoft's release schedules.

Omnichannel VoIP, SMS, and AI voice platform built for high-volume staffing and sales.

Editor's takeWhippy's Voice AI Recruiter runs job-aware phone screens around the clock and writes structured notes back into the ATS. One staffing client reported saving $1.64 million a year by replacing part of its sourcing team with the tool. Costs stack quickly though, since Voice AI is a separate line item that can reach $5,000 a month.

Cloud phone system for recruiters with a power dialer, AI sentiment analysis, and virtual numbers in 100+ countries.

Editor's takeCalilio bundles a power dialer and AI-driven sentiment analysis at a price point well under many VoIP competitors, which suits high-volume recruiting outreach. HIPAA compliance and global numbers in over 100 countries widen its use for healthcare and international staffing. Teams relying on Salesforce or HubSpot should wait for native integrations, currently listed as in development.

An AI-powered VoIP platform with native Bullhorn integration and live recruiter coaching, chosen by Randstad worldwide.

Editor's takeRandstad, the world's largest staffing firm, picked Dialpad as its single voice provider, and the AI assistant now offers real-time objection handling during candidate calls. Recruiters on the entry Standard plan do not get that Bullhorn tie-in though, and SMS volume caps out fast for high-outreach teams.

VoIP platform for staffing agencies with deep Bullhorn and Vincere integration and AI candidate sentiment analysis.

Editor's takeRingover's biggest advantage for staffing agencies is its two-way ATS sync, with dedicated integrations for Bullhorn and Vincere that log calls and enable click-to-call directly from candidate records. The base Smart plan starts at $21 per user monthly with calling to 90-plus countries included.

NASDAQ-listed cloud phone system with a 100% uptime guarantee and 300+ business app integrations.

Editor's takeCrexendo backs its cloud phone platform with a rare contractual 100% uptime guarantee, running on Tier 5 data centers. It has scaled to over 7 million users while holding a 4.9 out of 5 G2 rating for 15 straight quarters. Setup is the rough edge, with users reporting the management console is hard to navigate, and BBB complaints cite strict auto-renewal terms.

Cloud VoIP phone system with pay-as-you-go pricing, no contracts, and AI-powered call analytics.

Editor's takeVoIPstudio backs its service with a financially guaranteed 99.999% uptime SLA, rare among budget VoIP providers. Pay-as-you-go pricing starting at $6 per user with no contract removes a common lock-in risk. The tradeoff shows up in polish, with a desktop interface some reviewers call dated and occasional mobile app connectivity problems.

Business VoIP platform with 'Call Pop' CRM insights, HIPAA and SOC 2 compliance for small businesses.

Editor's takeNextiva earned the top spot in 13 of G2's Winter 2025 reports, spanning VoIP to contact center. Its 'Call Pop' feature surfaces caller data instantly, and the platform holds SOC 2, ISO 27001 and HIPAA-ready certification. Contracts auto-renew with early termination fees though, and users report the mobile app ringing on multiple devices.

Managed cloud phone system with all-inclusive pricing and US-based support for startups.

Editor's takeVoiceSpring runs a managed-service model. Staff handle configuration changes so users skip complex self-service portals. That convenience comes with risk, since reviewers document outages lasting several days.