Business Phone Systems
Free business phone systems
4 of the 45 business phone systems in this directory are free or have a free plan.
1 has no paid plan at all. The rest pair a free plan with paid ones, and the table says what each free plan includes.
Listings checked up to Nov 12, 2026 · Where the facts come from
| Tool | Price | What is free |
|---|---|---|
| Google VoiceGoogle's phone number service for calls and texts on any device | Free plan · from $10/mo | Google Voice for personal Gmail accounts, US only: one number, unlimited US calls and texts, and voicemail transcripts. Needs an existing mobile number. |
| FreePBXOpen-source web interface for managing an Asterisk phone system | Free | Everything. There is no paid plan. |
| SonetelBusiness phone numbers in any country with an app and web app | Free plan · from $9.95/mo | Basic plan has no monthly fee: pay as you go for a number subscription from $1.79 a month and for calls, with SMS-to-email. |
| ZadarmaCloud PBX and virtual numbers in 110+ countries, free to start | Free plan · from $39/mo | Standard plan: $0 a month for up to 5 PBX users, with calls, numbers and extra PBX features paid for separately as used. |
Common questions
Which business phone systems are free?
4 of the 45 business phone systems in this directory are free or have a free plan. They are Google Voice, FreePBX, Sonetel and Zadarma.
Which business phone systems are free with no paid plan?
FreePBX has no paid plan. The others on this page limit the free plan and sell paid ones.
When was this checked?
Each listing shows its own date. On this page they run from Oct 17, 2026 to Nov 12, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.
This page is built from the listings. A tool is here because its listing says so, and each listing names the pages it was read from.