Zadarma
Powerful Cloud Telephony for Global Businesses
Zadarma offers a feature-rich VoIP platform designed for businesses that want flexibility, scalability, and professional communication without high costs. Set up your cloud PBX in minutes, manage international teams, and serve customers worldwide — all from a single interface.
Key features:
- Virtual phone numbers in 110+ countries
- Free cloud PBX with IVR, call routing, and analytics
- Integration with CRMs: HubSpot, Zoho, Bitrix24, and more
- Apps for desktop, mobile, and browser-based calling
- AI-powered voice agents and call tracking
- Full control via web interface and API
Ideal for remote teams, support centers, and growing companies looking to modernize their phone systems.
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Twilio Voice
Create a scalable voice experience with the API that connects millions globally. With Twilio Voice, you can build unique phone call experiences with one API, to create, receive, control and monitor calls with just a few lines of code. Create an engaging voice experience that you can quickly scale and modify with a wide array of customization options and resources, like our Voice SDK. Then, add on features like Interactive Voice Response (IVR), recording transcriptions, and speech recognition to create an experience that your customers will appreciate.
Whether you're looking to set up global conferencing or alerts & notifications, Twilio has the support you need for building with Voice. Find docs, code samples, helper libraries, and developer tools such as Twilio Runtime and our visual workflow builder, Studio.
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Grasshopper
Grasshopper is a virtual phone system purpose-built for entrepreneurs and small business owners who need a simple, professional way to manage customer communications. By using a dedicated business number, Grasshopper helps you draw a clear line to separate personal and professional communication. Choose a local, toll-free, or vanity number (or port your own) and access features like call forwarding, call recording, custom greetings, VoIP calling, and unlimited users. The best part? You can handle customer calls and texts from anywhere through the mobile and desktop apps—no second phone or complex setup required.
Whether you're just starting out with a side gig or scaling a small team, Grasshopper allows you to project a polished presence, stay on the go, and deliver exceptional customer communications. With simplified setup and 24/7 support, it’s the business communications app that fits to your needs and empowers you to focus on what matters most.
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InGenius
InGenius Connector Enterprise expertly integrates existing telephone systems into leading CRMs, with an enterprise-proven solution. Using innovative computer telephony integration (CTI) that offers maximum configuration flexibility and security, Upland InGenius easily adapts to unique contact center needs. Backed by reliable expertise and superior customer care built over 20 years in the enterprise telephony space, InGenius helps contact centers increase productivity and enhance the customer experience.
InGenius Connector Enterprise equips contact centers with features like screen pop, click-to-dial, automated call logging and call reports. The solution enables agents to efficiently serve customers and see a comprehensive view of interactions for intelligent decision-making.
Supported CRMs: Microsoft Dynamics 365, Salesforce, ServiceNow
Supported Phone Systems: Asterisk, Avaya, Cisco, Genesys, Mitel
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