VoIP telephony and virtual phone systems

Aircall is a cloud phone system built for sales and support teams, well regarded for its usability and CRM integrations, though its real price ends up above the advertised figure due to its minimum seat requirement.

Two plans per seat/month on annual billing: Essentials from $30 and Professional from $50, both with a minimum of 3 seats (a real floor of $90/month). On monthly billing this rises to $40 and $70, with a minimum of 4 seats. A custom Custom plan is also available. Several AI and advanced analytics features are billed separately.

CallHippo is a VoIP phone system with a free entry plan, auto dialers, AI voice agents, and competitive international rates, though many of its most useful features (recording, AI, transcription, spam protection) are sold as add-ons separate from the advertised price.

A very limited free Basic plan, plus paid plans per user/month on annual billing: Starter from $18, Professional from $30, and Ultimate from $42 (more expensive on monthly billing). A custom Enterprise plan is available for teams of 50+ users. Recording, AI, transcription, and spam protection are billed as separate add-ons.

CloudTalk is a cloud-based phone system built for sales and support teams, with auto dialers, native CRM integrations, and call quality that users consistently rate highly.

Four plans per user/month with annual billing: Lite from €19, Starter from €25, Essential from €29, and Expert from €49. Monthly billing raises the price, and several important features (advanced dialer, AI, verified caller ID) are billed separately as add-ons.

JustCall, by SaaS Labs, is a communication platform that combines voice, SMS, WhatsApp, and AI in a single workspace, with a particular focus on powerful dialers for sales prospecting, used by more than 6,000 companies.

Four plans per user/month on annual billing with a 2-user minimum: Team from $29, Pro from $49, Pro Plus from $89, and Business at custom pricing. Monthly billing raises the per-user price.

KrispCall is a cloud phone system with virtual numbers in more than 100 countries, multi-level IVR, a power dialer, and more than 100 CRM integrations, built for sales and support teams that need international phone presence.

Essential plan from around $12/user/month, Standard plan from around $32/user/month, and a custom-priced Enterprise plan available on request.

Zadarma offers a free virtual PBX, virtual numbers in more than 90 countries, and very affordable pay-as-you-go call rates, with additional paid plans (Standard, Office, Corporation) for extra features and users.

A free virtual PBX plan as the base. Paid plans Standard (up to 5 users), Office (up to 10), and Corporation (up to 20) with prices ranging from $0 to around $79/month depending on region and features. Calls are additionally billed pay-as-you-go by destination.