Phone.com is described as 'VOIP Business Phone Service + Virtual PBX'. There are six alternatives to Phone.com for a variety of platforms, including iPhone, Android, Mac, Windows and Online / Web-based. The best alternative is Google Voice, which is free. Other great apps like Phone.com are RingCentral (Paid), Dialpad (Freemium), Globfone (Freemium) and Ringblaze (Paid).
Google Voice gives you one number for all your phones, voicemail organized in an email format, free US long distance calls, low rates on international calls, and many free calling features, including transcripts, call blocking, call screening, conference calling, SMS, and more.
A business phone system, but not as you’ve known it. Ringblaze offers a shared call inbox for your team - All calls, numbers, and features in one collaborative workspace. The result: more productive teams and happier customers.
Corvum provides VoIP phone and SMS texting services tailored law firms. Corvum is a good for any small to medium-sized law practice (1 to 100 staff) who want VoIP phone, business texting, and have remote workers who need professional phone system.