Side by side
Line2 vs OnSIP
Both stand on business phone systems. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Paid AndroidiPhoneMac+2
Line2 combines a second number with calling, texting, routing, and voicemail controls across major platforms. Review carrier restrictions and the listed plan terms before choosing a subscription.
Visit Line2 Free plan AndroidiPhoneMac+2
OnSIP offers a free tier alongside paid calling and business phone features. The restriction on regular-number dialing for free SIP accounts is an important distinction when choosing a plan.
Visit OnSIPThe facts
| Line2 | OnSIP | |
|---|---|---|
| Free plan | Not published | Yes |
| Open source | Not published | Not published |
| Runs on | Android, iPhone, Mac, Web, Windows | Android, iPhone, Mac, Web, Windows |
| Lowest paid plan | Monthly subscription: $10.99 a month | Unlimited: $18.95 a month |
| Plans published | 8 | 4 |
| Maker | Not published | OnSIP |
| Website | line2.com | onsip.com |
| On business phone systems | #151 of 174 | #8 of 174 |
Line2: what it does well
- Second number for calls and texts
- Unlimited US and Canada VoIP calling
- Local, vanity, and multiple numbers
- Automatic call recording listed
- Apps for Android, iOS, macOS, Windows, and web
What to know first
- Cellular providers may restrict VoIP
- Extra carrier fees may apply
- Business SMS/MMS registration is required
- Some plans list no limits
OnSIP: what it does well
- Free plan supports up to 100 users.
- Free plan includes unlimited extensions.
- Integrations include Zendesk, HubSpot, and Odoo.
- Month-to-month contracts are available.
What to know first
- Free SIP accounts cannot dial regular phone numbers.
- Unlimited plan has a five-user minimum.
- Video conferences support up to five people.