Today’s sales and support teams rely heavily on cloud-based phone systems to engage customers, follow up on leads, and manage ongoing conversations. However, with numerous options available, how do you determine which one is best suited for your team? While Aircall, JustCall, and Five9 all offer voice communication platforms, each one is uniquely positioned for different use cases and company sizes.

Let’s dive deep into what sets them apart and how to pick the right solution based on team size, CRM needs, call routing complexity, and budget.

Aircall: A Balanced Choice for Modern SMB Sales Teams

Aircall positions itself as the cloud telephony tool built for modern sales and support teams that rely on strong CRM integrations and intuitive dashboards. If your company uses tools like HubSpot, Salesforce, or Pipedrive, Aircall’s native integrations ensure that your reps can make and receive calls without needing to switch between tabs.

The platform is designed for scaling teams, featuring shared call inboxes, call tagging, live coaching, and call whisper. You also gain access to call recording, analytics, and workflow automation, making it ideal for small to mid-market teams that need sophistication without the complexity.

Aircall’s call routing is flexible enough to handle business hours, team-based routing, and call queuing. It’s not designed for large contact centers, but it excels at handling day-to-day operations for growing businesses.

Best For: Sales-focused SMBs and midmarket teams that want seamless CRM sync and real-time collaboration tools.
Price Range: Moderate. Not the cheapest, but packed with value for growth-focused companies.

JustCall: Simplicity and Speed for Startups

If you’re a startup or an early-stage company looking for a lightweight and easy-to-deploy solution, JustCall is worth considering. It integrates with popular CRMs, such as Zoho, HubSpot, and ActiveCampaign, and focuses on getting you up and running with minimal setup.

The platform emphasizes basic call handling features like click-to-call, SMS, call recording, and voicemail drop. While the analytics are relatively lightweight, they cover the most basic needs, such as tracking call volume and duration.

JustCall also excels in team collaboration, offering tools such as shared numbers and call notes. That makes it perfect for teams that want a no-fuss, affordable tool to support outreach and follow-up. Routing features are fairly basic compared to Aircall and Five9, but they are sufficient for simple sales or customer support teams.

Best For: Startups and small teams that want quick deployment, SMS features, and CRM-friendly calling.
Price Range: Affordable. Great value for early-stage businesses on a tight budget.

Five9: Enterprise-Grade Power for Large Call Centers

Five9 is designed for high-volume contact centers that require advanced routing, intelligent analytics, and deep integrations with enterprise CRM systems, such as Salesforce and Oracle.

Where Five9 really excels is in its call routing engine, which supports skills-based routing, queue callbacks, IVRs, predictive dialing, and other advanced features. If you’re managing hundreds of agents and need to customize how calls are routed down to the last detail, Five9 gives you that power.

In terms of analytics, it offers real-time dashboards, custom reporting, and AI-powered insights. Supervisors can listen in, whisper advice, or intervene in calls, all essential tools for managing large-scale operations. Five9 also includes workforce management tools, agent scripting, and omnichannel support across voice, email, and chat. It’s a full suite built for operational control and scalability.

Best for: Large call centers and enterprise support teams managing high call volumes that require advanced routing and performance tracking.
Price Range: Premium. Ideal for teams where telephony is mission-critical.

Feature-by-Feature Comparison

Our Take: Match the Tool to Your People

Too often, companies choose tools based solely on their features or the integrations they offer. But the most important question is, does this tool fit your team’s workflow and growth stage?

Choose Aircall if you’re a growing sales team that values integration, collaboration, and easy-to-use dashboards.

Choose JustCall if you require fast setup, reliable performance, and straightforward features at a startup-friendly price.

Choose Five9 if you’re managing a complex contact center environment and require in-depth customization, comprehensive reporting, and AI-powered routing.

There’s no universal winner here. The right solution depends on who’s using it, what they need to do, and how fast you’re scaling.

FAQs

Which cloud telephony tool is best for CRM integration?

Aircall and Five9 both offer strong CRM integrations. Aircall is better suited for SMB CRMs, while Five9 is more suitable for enterprise CRMs like Salesforce.

Is JustCall suitable for call centers?

Not really. JustCall is better for small sales or support teams. For high-volume routing and advanced features, Five9 is the better fit.

Does Aircall offer SMS functionality?

Yes, but it’s more limited compared to JustCall, which places a bigger focus on two-way SMS and automation.

Is Five9 too advanced for a mid-size team?

It may be overkill unless you have specific needs related to routing, call volume, or omnichannel support. Aircall might be more practical.

Can I switch between platforms later if my team grows?

Yes, but migrations can be complex. Choosing a scalable platform from the start, like Aircall, may save time and hassle down the road.