Quick answer: For most small teams, Quo is the strongest pick — startups that want a modern, app-first number. CallHippo (cheap international numbers, fast setup) is the best alternative, depending on your setup.
— Daan, AIBuilder Marketplace · last reviewed 2026-09-01
| Tool | Best for | Hands-on | |
|---|---|---|---|
| Quo | Startups that want a modern, app-first number | hands-on review | Visit → |
| CallHippo | Cheap international numbers, fast setup | our review | Visit → |
| Aircall | Support & sales teams living in their CRM | our review | Visit → |
| CloudTalk | Call centers that need smart routing | our review | Visit → |
| KrispCall | Solo founders on a budget | hands-on review | Visit → |
| Calilio | Simple, no-nonsense cloud calling | hands-on review | Visit → |
| Vida AI | Letting AI answer your phone entirely | hands-on review | Visit → |
1. Quo — Startups that want a modern, app-first number
Shared business numbers, texting and AI call summaries for small teams, formerly OpenPhone. About $15/user/month on annual billing, plus telecom taxes and surcharges in 16 US states. Call reliability off Wi-Fi is the recurring complaint, and there is no video conferencing.
My take: The former OpenPhone — the cleanest app of the bunch, with AI call summaries that actually save time. Read my hands-on review →
2. CallHippo — Cheap international numbers, fast setup
AI-driven business phone system. Virtual numbers in 50+ countries, power dialer, call analytics and AI agents — set up your sales and support calling in minutes. Its omnichannel inbox threads voice, WhatsApp, SMS, email, Instagram and Telegram into one conversation per customer.
My take: Broadest country coverage at entry pricing; the AI dialer is a real plus for outbound teams. Read our full CallHippo review →
3. Aircall — Support & sales teams living in their CRM
Cloud phone system for sales and support teams: call routing, analytics and CRM integrations. A three-licence minimum applies, so entry is effectively about $90/month; Essentials is roughly $30/user/month annual against $40 month-to-month.
My take: The most mature integrations — if your team works out of HubSpot or Pipedrive, this just clicks. Read our full Aircall review →
4. CloudTalk — Call centers that need smart routing
Cloud call centre with call routing, analytics and CRM integrations, from €19/user/month on annual billing (Expert €49 needs at least three licences). AI voice agents are separate subscriptions from €99/month for 200 minutes, and number rental plus outbound minutes stack on top of the seat price.
My take: Strong analytics and routing; built for higher call volumes rather than solo founders. Read our full CloudTalk review →
5. KrispCall — Solo founders on a budget
Virtual numbers across 100+ countries with a shared dashboard, dialer and CRM hooks, from about $12/user/month on annual billing. Calls and SMS are pay-as-you-go from a separate credit balance, so compare per-country call rates at your volume rather than the seat price.
My take: The most affordable way to look professional with a dedicated business number. Read my hands-on review →
6. Calilio — Simple, no-nonsense cloud calling
Cloud phone system with international numbers and call menus, from about $12/user/month annual on Standard. Numbers, minutes and SMS meter separately from a credit balance, so an active team's real bill sits above the per-seat price.
My take: Light, friendly and fast to set up — I reviewed it hands-on and the simplicity is the point. Read my hands-on review →
7. Vida AI — Letting AI answer your phone entirely
Deploy autonomous frontline voice agents. Let AI answer calls, book appointments, and handle FAQs 24/7 without sounding robotic.
My take: Not a phone system but an AI receptionist — pair it with any of the above and stop missing calls. Read my hands-on review →
Frequently asked questions
What is the best business phone systems 2026?
Quo is the strongest pick for most teams (startups that want a modern, app-first number). CallHippo is the best alternative (cheap international numbers, fast setup).
What is a good alternative to Quo?
CallHippo (cheap international numbers, fast setup) or Aircall (support & sales teams living in their crm), depending on your setup.
Are these picks independent and trustworthy?
Yes — every recommendation is chosen and written by Daan, who runs his own businesses on these tools. Links are affiliate links, clearly disclosed, at no extra cost to you.
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