Zoiper

Zoiper is a comprehensive cross-platform VoIP dialer that facilitates video and voice calling, as well as instant messaging capabilities. Its compatibility with Windows, Mac, Linux, iOS, Android, and Windows Phone platforms make it accessible to many users globally. Zoiper supports multiple channels' communication features across various PBXs and SIP providers intended for businesses of all sizes. TLS, SRTP, and ZRTP protocols encrypt the data to ensure secure communication for texts or calls effortlessly.

Zoiper offers call center functionality in its services that provide auto-answer calls transfer facility with CRM integration feature; it records customer conversations for quality assurance purposes. With the option of plugins/extension in popular email clients or web browsers such as Outlook Thunderbird Chrome Firefox Safari Goldmine CRM Lotus Organizer etc., Zoiper allows direct calling from your inbox itself without switching windows repeatedly.

For developers who want to integrate their app's voice functionalities into the system or embed a softphone into their application can use Zoiper's Software Development Kit (SDK) & JavaScript API respectively - this enables access to the vast array of possibilities by using Zoipers' top-notch technology while providing custom branding options through SDKs application process letting you create an interface matching your desired user experience configured precisely how you need it!