SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.

Tragofone - White-label VoIP Softphone with WebRTC and Auto-provisioning

Looker - Looker makes it easy for analysts to create and curate custom data experiences—so everyone in the business can explore the data that matters to them, in the context that makes it truly meaningful.

PhonerLite - PhonerLite enables your PC to use it for internet telephony (VoIP , Voice over IP, SIP).

HubSpot Marketing Hub - HubSpot is a cloud-based inbound marketing software that allows businesses to transform the way that they market online.

tSIP - tomeko.net/software: SIP client for Windows.