OpenCNAM is described as 'simple Caller ID API, ready for integration into any app or phone system'. There are five alternatives to OpenCNAM, not only websites but also apps for a variety of platforms, including Android, Mac, Windows and Linux. The best alternative is Yellow Pages, which is free. Other great sites and apps similar to OpenCNAM are Telnyx (Paid), EZCNAM (Paid), NYbizlisting (Free, Open Source) and LocalYaar (Free).
- 5 alternatives