SellScale vs. Starnus Comparison Chart

Adversus is an outbound dialing solution that helps you streamline your call strategies, automate manual processes, and provide valuable insights to improve your outbound workflows and efficiency. Adversus was born in 2015 after our founders experienced a lack of flexibility with the solution they worked with. The dream was to build an outbound solution that would change the game․ We believe in user-driven innovation, and we acknowledge that every single user has different needs and demands. We provide a solution that incorporates flexibility and customization to every aspect of the workflow. At Adversus, our primary focus is to have a future-proof solution that never falls behind. We do not just want to adapt to the market but instead push the boundaries of what is possible. Adversus is used by businesses in a wide range of industries, with the common goal to make their outbound call activities more efficient. The size ranges from one to several hundred end-users.

Dialfire is a cloud-native telephony platform for inbound and outbound phone campaigns. It comes with an extremely fast predictive dialer, which allows for up to 3 times more contacts to be called within the same amount of time in comparison to manual dialing. In addition to its dialing speed, the extremely user-friendly solution offers workflow automation, extensive real-time reports, statistics and monitoring for full transparency and control, while APIs ensure a smooth integration with existing infrastructure. Complete inbound or outbound campaigns can be set up within minutes, directly from the browser, without any installation and still allowing for full personalisation. Dialfire is developed in Germany backed by over 25 years of experience in the call center industry. For more info check out

Revolutionize your contact center with CallTools—the cutting-edge cloud-based software that integrates your inbound and outbound dialing on a single platform. Boost your agents’ productivity and enhance customer engagement like never before with CallTools’ powerful suite of call center features, including predictive dialing, call recording, and multi-touch campaigns with email and SMS capabilities. Get a complete 360-degree view of your agents’ performance and take advantage of real-time reporting. With seamless integration options, advanced queue management, and flexible IVR settings, CallTools ensures a streamlined workflow. Effortlessly manage data targeting and caller ID strategies to optimize connection rates and improve outcomes. Empower your team with a user-friendly interface designed to simplify complex tasks while delivering consistent results.

Dependable cloud based email hosting with spam filtering, antivirus protection, generous storage and webmail. Compatible with Outlook and all other POP3/IMAP clients. High volume SMTP service for responsible senders. Outbound relay service for transactional messages, email marketing campaigns, newsletters and other applications. Dedicated email servers, clustering and multiple IP load balancing for high volume senders. Fixed monthly cost with unlimited sending and reputation monitoring. Greatmail is an email service provider (ESP) specializing in business class email hosting, SMTP hosting and email servers. For ISPs, application programmers and cloud developers, we also provide custom solutions including dedicated IP servers and process specific, load balanced configurations with multiple servers.

DialedIn is a modern call center software designed to transform customer interactions and streamline your operations, helping teams achieve more daily. By automating and optimizing key workflows across inbound, outbound, and blended environments, DialedIn helps you boost agent productivity and deliver better outcomes across every call. Key features include: • Fast Setup & Deployment • User-Friendly Interface • Advanced Predictive, Preview & Progressive Dialing • Smart Call Routing • No-Code Integrations • Comprehensive Reports • Real-Time Analytics • Security & Compliance • Scalable Architecture • Spam Mitigation With Our Patented CleanCallerID™ Technology • Exceptional 24/7 U.S.-Based Support • Flexible Pricing Options Choose a package that fits your team and budget. At our core, DialedIn is passionate about providing exceptional customer service. That’s why we are constantly innovating and improving our solutions to ensure that our clients are always ahead.

Activate your new international phone number in 60 seconds. Choose from phone numbers in over 120+ countries and 1,000 cities. Forward your calls to any phone number in the world. Robust scheduling options allow you to route your calls based on the days and hours of your business. Route your calls to your main call center during business hours and to voicemail during non-business hours. Instantly view detailed information about calls made to your TollFreeForwarding phone number. Learn about your customers' call habits to help make decisions about outbound sales and follow-up. Keep track of your calls by recording all or some of your calls. Recorded calls are stored in call detail records and can be played or downloaded at any time.

Cloud-based observability solution that helps businesses track and manage workload and performance on a unified dashboard. Monitor everything you run in your cloud without compromising on cost, granularity, or scale. groundcover is a full stack cloud-native APM platform designed to make observability effortless so that you can focus on building world-class products. By leveraging our proprietary sensor, groundcover unlocks unprecedented granularity on all your applications, eliminating the need for costly code changes and development cycles to ensure monitoring continuity. 100% visibility, all the time. Cover your entire Kubernetes stack instantly, with no code changes using the superpowers of eBPF instrumentation. Take control of your data, all in-cloud. groundcover’s unique inCloud architecture keeps your data private, secured and under your control without ever leaving your cloud premises.

Labra is a powerful platform that revolutionizes the Cloud go-to-market (GTM) process for businesses. It enables zero-engineering marketplace listings, letting companies launch in days—not months. Labra's CRM integration automates co-sell approvals, streamlines channel partner management, and helps scale your success on the Cloud with reduced effort. With AI-powered insights and advanced, real-time analytics, Labra helps teams drive smarter, faster decision-making, giving you a competitive edge. Marketers gain new tools to maximize visibility and impact on cloud marketplaces, while sales teams benefit from reduced manual effort—up to 90%, and a more optimized selling experience. Ultimately, your business gets a new, sustained, scalable revenue channel powered by efficiency, automation, and partnerships.

Fight skyrocketing paid media costs by turning your customers into a primary vehicle for acquisition, awareness, and activation with Extole. Our enterprise referral platform and team of experts create customized advocacy and referral programs, enabling brands to drive engagement with existing customers, acquire new customers, and generate an essential and unique first-party data source. The platform's advanced capabilities ensure companies get the most out of their referral programs. Leverage custom events, profiles, and attributes to enable dynamic, audience-specific referral experiences. Use first-party data to tailor customer segment messaging, rewards, and engagement strategies. Use our flexible APIs to build management capabilities and consumer experiences–headlessly or hybrid. We have all the tools you need to build scalable, secure, and high-performing referral programs. Book a demo to see how Extole can unlock the full potential of your customer advocacy programs.

CallTrackingMetrics is the only SaaS platform that uses call tracking and conversion intelligence to inform contact center automation—resulting in a more personalized customer experience. Discover which marketing campaigns are generating leads and conversions, and use that data to automate call flows and power your contact center. Unify communications across your entire organization with our phone, text, online form, and live chat tools. More than 100,000 users around the globe trust CallTrackingMetrics to manage communications for their marketing, sales, and service teams. Call tracking features include reliable dynamic number insertion (DNI) for session-level attribution, local, toll-free, and vanity tracking numbers, and omnichannel attribution across calls, texts, form fills, and chats. Key contact center features include a browser-based softphone, smart routing options, SMS campaigns, automated call scoring, and smart dialer functionality.