Which business phone (voip) software has a free plan?

Freshdesk Contact Center, Sonetel, Zadarma list a free plan.

Business Phone (VoIP) Software Pricing 2026: Compare 22 Tools

22 products

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Listed alphabetically. SpecEntry does not rank these products.

3CX3CXBusiness phone system and contact center licensed per system by simultaneous calls, self-hosted or hosted by 3CX.From $300 / month
AlloAlloBusiness phone app with per-seat numbers, CRM sync, shared inbox, team analytics and AI agents on higher tiers.From $32 / month
BroadvoiceBroadvoiceAI-enhanced business phone (b-hive) and GoContact cloud contact center tools for mid-market companies.From $10 / month
CalilioCalilioCloud phone system with virtual numbers, calling and SMS bundles, IVR and power dialer for small and growing teams.From $12 / month
Five9Five9Cloud contact center platform with digital and voice channels, AI and workforce engagement bundles.From $119 / month
Freshdesk Contact CenterFreshworksCloud phone system and contact center from Freshworks with tiered plans from basic call handling to enterprise features.From $15 / month
Google VoiceGoogleCloud phone service from Google for calling, texting and voicemail, sold standalone or as a Google Workspace add-on.From $10 / month
Intermedia UniteIntermediaUnified communications platform combining cloud phone, video meetings, chat and file sharing for businesses.From $27.99 / month
iPlumiPlumCloud business phone, texting and fax service with call routing, voicemail and HIPAA-compliant options.From $8.99 / month
MightyCallMightyCallCloud business phone service with Core, Pro, Power and Enterprise plans for calling and team communication.From $20 / month
net2phonenet2phoneCloud business phone (UNITE), contact center (uContact) and AI agent services, with per-user and credit-based plans.From $59.99 / month
OnSIPOnSIPBusiness phone system with Unlimited per-user and Pay-as-you-go per-account plans.From $18.95 / month
Ooma OfficeOoma, Inc.Small business VoIP phone service with Essentials, Pro and Pro Plus plans and no contract required.From $19.95 / month
QuoQuoBusiness phone system (formerly OpenPhone) with shared numbers, calling, texting and AI call handling for teams.From $15 / month
Retell AIRetell AIPlatform for building AI voice and chat agents that answer and make phone calls.From $0.07 / month
SonetelSonetelBusiness phone numbers and calling service with free calls to 40+ countries, recording and transcription on paid plans.From $9.95 / month
TalkrouteTalkrouteBusiness phone app for calling, texting and video meetings, with AI receptionist and bulk texting add-ons.From $19 / month
TelnyxTelnyxCloud communications platform offering SIP trunking, voice and AI agent APIs, messaging, phone numbers and fax.From $0.01 / month
TelzioTelzioBusiness phone system with unlimited users for a flat monthly fee plus per-minute and per-message usage.From $0.05 / month
VapiVapiDeveloper platform for building, testing and deploying voice AI agents.From $0.05 / month
VoiplyVoiplyVoIP phone service for homes and small businesses, with app and desk-phone options.From $7.46 / month
ZadarmaZadarmaCloud PBX and virtual phone numbers with built-in CRM, offered in Standard, Office and Corporation packages.From $39 / month

How much does Business Phone (VoIP) software cost?

The prices above are each product's entry paid plan. The real cost depends on your team size and whether you pay monthly or annually, so open a product or the calculator for your exact figure.

Price comparisons

Compare costs for your team · Pricing guides

How to choose

Compare what each plan includes for your team size, and check whether the price shown is billed monthly or annually.

What entry pricing looks like here

Lowest: $0
Average: $33.84
Highest: $300

Lowest, average and highest entry-level paid price across the 22 products in this category that publish a paid price, United States market. SpecEntry calculation from vendor-published prices; not a ranking.

Business Phone (VoIP) pricing questions

Which business phone (voip) software has a free plan?
Freshdesk Contact Center, Sonetel, Zadarma list a free plan.