ClientWindow vs. Extremis Comparison Chart

Squaretalk is a powerful contact center solution that transforms how modern teams connect with prospects and customers, convert sales opportunities, and grow their operations. The combination of AI Voice Agents, calling, power dialing, WhatsApp Business messaging, SMS, email, AI-powered automation, and affordable scalability ensures that companies of all sizes shorten their sales cycle and elevate outreach without additional complexity or costs. Squaretalk’s platform offers omnichannel communication, powerful call-handling features, automated transcripts, sentiment analysis, contact management, customizable workflows, advanced reporting, and enterprise-grade security. The internal chat allows for quick sync, better mentoring, smoother escalations, and the unification of internal and external communication in one platform. With local numbers in 150+ popular and niche destinations, we enable businesses to establish and maintain a local presence, build trust, and support their global expansion.

Aircall is an AI-powered customer communications and intelligence platform that unifies phone, messaging, and call center operations. Designed for sales and support teams, it enhances every interaction with features like AI Voice Agents, real-time conversation coaching, and integrated WhatsApp messaging. With powerful analytics, call recording, and shared inboxes, teams gain clarity and can resolve customer issues faster. The platform is easy to set up, offering quick number claiming, seamless integrations, and customizable workflows. Trusted by over 23,000 companies worldwide, Aircall helps businesses improve connection rates, boost CSAT scores, and streamline onboarding. By combining automation with human-first AI, Aircall reduces busywork so teams can focus on building better customer relationships.

Dialpad Contact Center is Dialpad's AI-native platform for customer experience — the connective layer where conversations, intelligence, and action come together in real time. At its core, Dialpad Contact Center is the world's first Agentic AI contact center: AI agents that don't just transcribe or summarize, but reason, resolve, and act autonomously across the full customer journey. Instead of routing customers between disconnected tools, Dialpad Contact Center unifies voice, digital, and human agents in one platform, connecting the voice and data silos that have historically kept support teams siloed and reactive. Every interaction becomes part of a compounding intelligence layer. With 775M+ AI recaps and counting, Dialpad Contact Center turns each conversation into operational insight that improves resolution rates, agent productivity, and CX outcomes over time. That intelligence is continuously optimized, governed, and made visible across your organization through Dialpad's Guardian safety layer, ensuring secure, enterprise-grade AI operations at scale. Dialpad Contact Center is built to resolve up to 80% of issues autonomously, reducing operational complexity while giving human agents the context they need for what still requires a human touch. People stay at the core; intelligence sits at the edge, ready to act the moment it's needed. Rather than asking enterprises to take autonomy on faith, Dialpad Contact Center is validated through Dialpad's Proving Ground, so teams can confirm ROI and reliability before committing at scale — a modern alternative to legacy, static bots and fragmented support stacks.

CTM, formerly known as CallTrackingMetrics, is a conversation intelligence and call tracking platform that helps businesses measure marketing performance, manage customer communications, and improve sales conversions. The software tracks phone calls, text messages, website forms, and chats to identify the advertising campaigns and channels that generate customer inquiries. Its AI-powered conversation analytics provide call transcription, summarization, sentiment analysis, and lead scoring. CTM also offers intelligent call routing, automated follow-ups, AI voice agents, and contact center management tools. Reporting dashboards help organizations analyze marketing attribution, advertising return on investment, customer interactions, and sales team performance. The platform integrates with Google Ads, Google Analytics, HubSpot, Salesforce, and other business applications to connect marketing data with customer conversations and revenue outcomes.

net2phone is an AI-powered business communication platform for companies serious about customer experience. Trusted by 500,000+ users and backed by 30+ years of experience, net2phone eliminates the friction of scattered channels and disconnected tools, so every conversation drives retention and growth. Unite unifies voice, messaging, video, and chat in one place, with call recording, sentiment analysis, and AI-generated follow-ups. AI Agent automates customer inquiries and workflows across phone and chat in 30+ languages, handing off to humans when needed. Coach AI reviews 100% of interactions to guide agent performance. uContact gives high-volume teams omnichannel routing and real-time dashboards. Every solution integrates with the tools you already use and runs on enterprise-grade security. Beyond software, net2phone provides expert guidance at every step, from setup to integration to ongoing optimization, so your technology delivers measurable results.

Focusing on delivering "Easy-first Unified Communications", Yeastar P-Series Phone System offers companies of all sizes with a complete package for calls, video, messaging, and integrations, out of the box. With in-built visual call management, integrated video conferencing, advanced contact center features, and ready-made SMS, WhatsApp, Microsoft Teams, CRMs, and more platform integrations, P-Series boosts productivity at all levels and provides everything across desktop, mobile, and browser with simple user apps. Available in the Appliance, Software, and Cloud Editions, P-Series provides flexible deployment options, allowing you to have it sited on-premises or in the cloud. Balancing costs and future growth, it requires a lower total cost of ownership, less training, and fewer management efforts. The ease of use and future-proof adaptability are paramount.

11x is building the autonomous digital workforce for GTM teams to accelerate growth. With two digital workers live today, 11x helps sales, marketing, and growth teams create, qualify, and convert pipeline across every channel in one unified platform. Alice is the outbound digital worker creating demand. She runs your full outbound motion in one workflow from prospecting to enrichment to multi-channel engagement and booking meetings on autopilot. Julian is an inbound digital worker capturing demand 24/7. He handles discovery, qualifies leads, and books meetings across phone, chat, SMS, email, and WhatsApp. Inbound intent is converted into qualified pipeline instantly. Trusted by teams worldwide, from high-growth startups to large enterprises, including Xerox, UST, Gupshup, Sage, Checkr, Armanino, and Rho. Backed by a16z and Benchmark, 11x is automating GTM workflows so humans can focus on what they do best: creating, innovating, and building relationships.

Our powerful Customer Relationship Management (CRM) software can help you increase your team’s productivity, generate more revenue, and improve engagement with your clients. Manage your advance/loan portfolio. Integrated with ACH processors. Includes syndicate reporting and broker portal. Send email and text campaigns, send/receive SMS messages to clients, track email opens, and more. Send any document out for electronic signature with ClixSign®. See when documents are viewed and signed by up to 8 signers. Give your customers access to a branded portal to upload documents, view messages, track balances/payments, and more. State-of-the art contact and deal management software gives you the full picture of your entire pipeline. Centrex Software offers custom software development solutions. We help customers build web and mobile applications for any purpose.

Pipedrive is a web-based sales CRM (customer relationship management) software that lets sales teams track pipelines, optimize leads, manage deals and automate their entire sales process to focus on selling. Pipedrive’s simple interface empowers salespeople to streamline workflows and unite sales tasks in one workspace. Unlock instant sales insights with Pipedrive’s visual sales pipeline and fine-tune your strategy with robust reporting features and a personalized AI Sales Assistant. Reach the right contacts at the right time with intelligent lead segmenting and activity reminders that tell you when to take action. When it’s time to seal the deal, compose instant, irresistible sales emails in just one click. With Pipedrive, winning has never been easier.

Birdeye builds AI agents for multi-location brands — trusted by the largest enterprise brands globally, including Sutter Health, Aspen Dental, Sun Auto and Caesars Entertainment. We give you AI coworkers at every location — for marketing, operations, and customer experience — that do the jobs your business needs done by employing multiple agents that work together to win AI visibility, convert demand, and deliver a consistent customer experience. Enterprise-Ready → Built for Scale SSO, audit logging, HIPAA, SOC 2, and GDPR. Role-based access, tiered approvals, and location-level reporting give corporate and local teams the control they need. So you stay in control while AI handles execution across hundreds of locations. With teams across the U.S., U.K., Australia, and India, Birdeye is redefining how enterprises win locally at scale.