Software Development
11 Best Call Center Software Development Companies in 2026
Mahmudul Hasan
Creative Director
A call center software development company builds the phone, routing and AI systems your support or sales team runs on, instead of renting a generic tool. The right partner knows telephony, CRM integration and, in 2026, how to run AI voice agents safely.
This guide explains what these companies build, from cloud-based call center platforms to IVR, and how agentic AI is changing the work. It ranks the 11 best call center software development companies in 2026: Cloud2Voice, ScienceSoft, BairesDev, Ecosmob, Inextrix, AssureSoft, Simform, Appinventiv, Belitsoft, Sheerbit and Maruti Techlabs, each with a live website example.
It also covers features, costs, benefits and how to choose a partner. Cloud2Voice publishes this list and includes itself at number one, so weigh our entry with that in mind.
What Is a Call Center Software Development Company?
A call center software development company is a team that designs, builds, integrates and maintains custom contact center software.
It uses telephony and VoIP (voice over internet protocol) to manage incoming calls, customer interactions and team workflows.
Unlike a reseller of ready-made SaaS licenses, it builds software you own and provides post-launch support. BPOs, SaaS companies, enterprises and telecom operators hire them when off-the-shelf tools fall short.
What Types of Call Center Software Do These Companies Build?
Call center software development companies build systems covering every step of a customer conversation, from first ring to final report.
The 8 types of call center software these companies build are given below.
Cloud contact center (CCaaS) platforms: Cloud-based, often multi-tenant platforms that let agents take calls from anywhere.
Interactive voice response (IVR) systems: Phone menus that collect caller inputs and route calls to queues or self-service.
Auto dialers for outbound campaigns: Dialers that place calls automatically and connect agents only when a real person answers.
Omnichannel communication platforms: Systems that bring voice, email, chat, SMS and social messages into one agent view.
CRM and ERP integrations: Connectors that pull customer records into each call and write call outcomes back.
Workforce and quality management tools: Scheduling, forecasting, call recording and scoring tools that protect staffing and service quality.
AI voice agents and chatbots: AI-powered chatbots and voice agents that answer routine requests and pass complex cases to humans.
Call center analytics and reporting dashboards: Custom dashboards showing handle time, abandonment, satisfaction and agent performance in real time.
What Are the Best Call Center Software Development Companies in 2026?
The best call center software development companies in 2026 are Cloud2Voice, ScienceSoft, BairesDev, Ecosmob, Inextrix, AssureSoft, Simform, Appinventiv, Belitsoft, Sheerbit and Maruti Techlabs.
The 5 criteria used to select these companies are given below.
Real telephony experience: Live call work with SIP, WebRTC, Asterisk or FreeSWITCH.
AI voice and agentic AI capability: Voice agents, multilingual voice models and safe human handoffs.
Proven CRM and helpdesk integrations: Published work linking call systems to business tools.
Security and compliance practices: Visible data privacy measures or certifications such as ISO 27001.
A live page or product you can visit: Public proof that backs the claims.
The 11 best call center software development companies in 2026 are given below.
1. Cloud2Voice
Cloud2Voice is a design and development agency that builds VoIP and call management software for startups and enterprises.
Why it made this list: It plans the agent and caller experience alongside the call logic.
Live website example: The VoIP development page shows call routing, IVR, SIP architecture and WebRTC offerings.
How they work: A discovery-to-deployment process with call quality and security testing.
What they build: Key call center services of Cloud2Voice are given below.
Call routing, queues, recording and IVR systems
Cloud phone systems and softphone platforms
SIP architecture and WebRTC
CRM, SIP and API integrations
AI capability: AI and ML product work; client testimonials credit it with AI-driven automation.
Quick facts: Offices in New York, Dubai, Kolkata and Khulna; operating since 2016; 60+ team members; 250+ projects; 5.0 average Clutch rating (as listed on its site).
Verdict: Best for startups and SaaS companies wanting VoIP development, UI/UX design and MVP development from one team.
2. ScienceSoft
ScienceSoft is a U.S. IT consulting and software development company that plans, builds and optimizes call center software.
Why it made this list: Long automation experience with certified security.
Live website example: Its consulting page outlines implementation and optimization options plus past projects.
How they work: Consulting leads into builds, like a Dynamics 365 plug-in used by 15,000+ call center specialists.
What they build: Key call center services of ScienceSoft are given below.
Implementation consulting in 4 to 8 weeks
Optimization consulting in 2 to 6 weeks
Multi-channel contact centers
Dynamics 365, Salesforce and ServiceNow integration
AI capability: Chatbots, AI-driven agent recommendations and embedded performance analytics.
Quick facts: HQ in McKinney, Texas; 37 years in software; 13 in customer service automation; ISO 9001 and ISO 27001.
Verdict: Best for enterprises running Microsoft, Salesforce or ServiceNow stacks.
3. BairesDev
BairesDev is a software development company that builds custom call center software with large engineering teams.
Why it made this list: It can staff large call center builds quickly.
Live website example: Its call center page lists development services and software types.
How they work: Flexible engagement models, from dedicated teams to staff augmentation.
What they build: Key call center services of BairesDev are given below.
Custom call center software
CRM and ERP integration
Cloud-based call center solutions
Analytics, IVR and workforce management tools
AI capability: AI chatbots, AI call routing, sentiment analysis and predictive analytics.
Quick facts: Founded 2009; 4,000+ software engineers; 500+ clients; 4.9/5 on Clutch from 63 reviews.
Verdict: Best for companies that need to scale a development team fast.
4. Ecosmob Technologies
Ecosmob Technologies is a VoIP and contact center development company that builds on open-source telephony platforms.
Why it made this list: Deep open-source telephony skills.
Live website example: Its contact center page shows features such as multi-level IVR and skill-based routing.
How they work: It customizes open-source switches around each client's call flows.
What they build: Key call center services of Ecosmob are given below.
Multi-level IVR and skill-based routing
Real-time agent monitoring, callback and CRM data retrieval
Contact center automation
FreeSWITCH, Asterisk, Kamailio, OpenSIPS and WebRTC development
AI capability: AI voicebots, sentiment analysis and AI compliance, with a stated 4 to 8 week path to production-ready voice agents.
Quick facts: Engineering since 2007; 250+ team members; 750+ clients; contacts in India, Canada and the USA.
Verdict: Best for businesses wanting open-source telephony built around their call flows.
5. Inextrix Technologies
Inextrix is a telecom software development company that builds contact center, VoIP billing and softphone products.
Why it made this list: Its customizable, white-label products shorten launch time.
Live website example: Its call center solution page presents iCallify contact center features.
How they work: It tailors its own products or customizes open-source dialers.
What they build: Key call center services of Inextrix are given below.
iCallify with auto-dialer, IVR builder and call recording
ASTPP VoIP billing and softswitch
Fonimo white-label WebRTC softphone
VICIdial, FreeSWITCH and Asterisk customization
AI capability: AI auto-dialer, inbound and outbound AI calling and custom AI voicebots.
Quick facts: Since 2010; 70+ team members; 1,200+ clients; 2,500+ projects; offices in Orlando, London, Randpark Ridge and Ahmedabad.
Verdict: Best for telecom operators and outbound teams needing white-label or dialer-heavy solutions.
6. AssureSoft
AssureSoft is a nearshore software development company that builds AI-powered call center solutions for North American companies.
Why it made this list: Time-zone alignment plus legacy modernization skills.
Live website example: Its contact center page explains development services and engagement models.
How they work: Dedicated teams and staff augmentation working in U.S. hours.
What they build: Key call center services of AssureSoft are given below.
Custom call center software
CRM integration and cloud-based call center software
Data analytics software
Legacy call center software optimization
AI capability: Predictive routing, intelligent chatbots and sentiment analysis.
Quick facts: 20+ years; 500+ engineers; offices in Miami, California, Bolivia and Paraguay; ISO/IEC 27001:2022; 1,800+ projects.
Verdict: Best for U.S. companies that want nearshore teams aligned with U.S. time zones.
7. Simform
Simform is an AI-native digital engineering company that builds agentic voice and chat agents for contact centers.
Why it made this list: It builds governance and measurable outcomes into agentic AI.
Live website example: Its Agentic Unified Communications page covers architecture, agent engineering and workflow integration.
How they work: Architecture comes first, then agents with contextual human handoffs.
What they build: Key call center services of Simform are given below.
PSTN and SIP architecture
Azure Communication Services, CCaaS and CPaaS orchestration
Voice and chat agents built with Copilot Studio and Azure AI Foundry
Integrations with Dynamics 365, Salesforce, ServiceNow and Zendesk
AI capability: Governed agentic AI with prompt-injection safeguards and containment, CSAT and handling time tracking.
Quick facts: Azure Expert MSP; 250+ Microsoft-certified engineers; trusted by 900+ enterprises; founded 2010.
Verdict: Best for enterprises on the Microsoft Azure stack.
8. Appinventiv
Appinventiv is a digital engineering firm that develops AI voice agents and conversational AI for enterprises.
Why it made this list: It covers the full voice agent lifecycle, from planning to monitoring.
Live website example: Its AI voice agent page lists services and use cases like support automation.
How they work: Projects start with use case consulting and voice UX design.
What they build: Key call center services of Appinventiv are given below.
AI voice strategy and voice UX design
Custom, multilingual AI voice agent development
System integration and workflow automation
Model training and performance analytics
AI capability: Generative AI, agentic AI and retrieval-augmented generation (RAG).
Quick facts: 1,700+ specialists; 3,000+ solutions; 11+ years; clients include KFC, Adidas and IKEA.
Verdict: Best for enterprises adding AI voice agents to an existing call center or app.
9. Belitsoft
Belitsoft is a custom software company that builds AI voice agents that answer and act on customer calls.
Why it made this list: Its model-agnostic approach avoids dependence on one AI vendor.
Live website example: Its AI voice agent page explains what custom agents can do on live calls.
How they work: Dialogue design, system integration and deployment on the client's chosen model.
What they build: Key call center services of Belitsoft are given below.
Agents that book appointments, take payments and update records
Transfer to a human with context
LLM fine-tuning and dialogue design
Bring-your-own-model deployment
AI capability: Model-agnostic voice agents, with sub-500 ms latency claimed by the company.
Quick facts: Offices in Alexandria (Virginia), London and Warsaw; operating since 2004.
Verdict: Best for finance, healthcare and SaaS teams that want to avoid model lock-in.
10. Sheerbit Technologies
Sheerbit Technologies is a VoIP and WebRTC development company that builds call center platforms on open-source telephony.
Why it made this list: Focused open-source telephony skills at a smaller team scale.
Live website example: Its homepage shows VoIP, WebRTC, softphone and call center solutions.
How they work: Custom builds, cloud or self-hosted, with ongoing maintenance.
What they build: Key call center services of Sheerbit are given below.
VoIP and WebRTC softphones
Call center platforms
Telephony development with FreeSWITCH, Asterisk and Kamailio
Web and mobile apps
AI capability: AI voice agents for inquiries, lead qualification and bookings, with human escalation.
Quick facts: Founded 2017; offices in Ahmedabad, India and Bothell, Washington; fewer than 50 staff.
Verdict: Best for small and mid-sized businesses that need an open-source call center build.
11. Maruti Techlabs
Maruti Techlabs is a product development company that builds voice AI and machine learning components for customer service.
Why it made this list: It solves specific voice problems inside existing setups.
Live website example: Its voice biometrics case study for a UAE bank reports a 52% CSAT rise.
How they work: Projects run through discovery, design, development, testing and deployment.
What they build: Key call center services of Maruti Techlabs are given below.
Passive voice biometrics for PIN-free caller authentication
Human vs machine call detection within 500 milliseconds
SMS chatbot that absorbs call surges
Conversational AI and chatbots
AI capability: Voice biometrics, audio classification and conversational AI.
Quick facts: Founded 2009; 250+ employees; 15+ years in operation; HQ in Texas.
Verdict: Best for call centers that want to add specialized voice AI to an existing platform.
What Features Should Custom Call Center Software Include?
Custom call center software should include features that route calls well, give agents context and protect data. The agent screen matters too, which is why UI/UX design for agent dashboards directly affects handle time.
9 must-have features of custom call center software are given below.
Automatic call distribution and skill-based routing: Sends each call to the best agent by skill, language or priority.
IVR and self-service menus: Let callers check status or pay bills without queuing.
Call recording and live call monitoring: Support training, disputes and real-time supervisor coaching.
Omnichannel inbox: Unites voice, email, chat and social media in one agent interface.
CRM, ERP and helpdesk integrations: API-first design links calls to customer records automatically.
Real-time dashboards and KPIs: Track average handle time, call abandonment and CSAT live.
Workforce management: Scheduling and call volume forecasting that match staffing to demand.
AI layer with human handoff: Adds voice agents, sentiment analysis and summaries, with clear rules for escalation.
Security and compliance: Encryption, access controls and call recording retention rules.
How Is AI Changing Call Center Software Development in 2026?
AI is changing call center software development by moving AI from add-on chatbots into the core of routing, conversations and quality control. Adoption is wide but shallow: 88% of contact centers use AI, yet only 25% have fully integrated AI automation into daily workflows, based on AmplifAI data reported by CMSWire.
6 AI changes reshaping call center software development in 2026 are outlined below.
Agentic AI that resolves requests end to end: Gartner predicts agentic AI will autonomously resolve 80% of common customer service issues by 2029, with 30% lower operational costs.
Voice AI agents replacing scripted IVR trees: Voice AI agents hold full, multilingual conversations instead of "press 1" menus, and hand low-confidence calls to a human with the transcript.
AI built into the platform: Routing, agent assist, summaries, knowledge retrieval and QA are designed as one system, not bolt-on tools.
Human-in-the-loop design: People review or take over AI decisions at set points. Natterbox research shows 76% of contact center leaders have formally adopted human-in-the-loop models.
Agent assist productivity: Agent assist suggests answers during live calls. McKinsey found generative AI-enabled agents resolved 14% more issues per hour with 9% lower handle time.
Compliance and voice security: The FCC ruled in February 2024 that AI-generated voices are "artificial" under the TCPA, so these calls need prior express consent. Synthetic audio also raises impersonation risk.
The U.S. Bureau of Labor Statistics also projects customer service representative jobs to decline 5% from 2025 to 2035 as tasks are automated.
How Much Does Call Center Software Development Cost?
Call center software development can range from about $15,000 to $40,000 for a focused single-department pilot, while a full enterprise rollout can pass $150,000. These are vendor-published estimates, and real quotes depend on scope. Development teams often quote $25 to $60 per hour.
The main cost factors are scope and call volume, the number of channels, AI features, integrations, team location and compliance needs.
Budget for recurring cloud hosting, software updates (which can range from $500 to $5,000 per year) and technical support. Hourly billing suits changing scope, fixed scope suits a defined pilot and a dedicated team suits long-term work.
Typical cost ranges by component are shown in the table below.
Component | Cost range | One-time or recurring |
Basic platform customization | $5,000 to $25,000 | One-time |
Full custom AI development | $10,000 to $50,000+ | One-time |
CRM integration | $1,000 to $10,000 | One-time |
Call routing integration | $2,000 to $20,000 | One-time |
Basic IVR | $1,000 to $5,000 | One-time |
AI-powered routing | $10,000 to $50,000+ | One-time |
Cloud hosting | $500 to $5,000 per month | Recurring |
Technical support | $1,000 to $10,000 per year | Recurring |
What Are the Benefits of Hiring a Call Center Software Development Company?
The benefits of hiring a call center software development company are specialist voice expertise, software that fits your operations and long-term control over cost and data.
6 benefits of hiring a call center software development company are given below.
Telephony expertise: Specialists handle SIP, WebRTC and call quality issues like jitter that general app teams miss.
Features built around your call flows: The software follows your routing logic and goals, not a generic workflow.
Integration with tools you already use: Calls connect to your CRM, ERP and helpdesk, so agents stop switching screens.
Ownership instead of per-agent fees: You own the software, so costs do not climb with every new agent seat.
Scalability and adaptability: The system grows with new channels and call volumes without a rebuild.
Safer AI adoption: Human handoff, integrated QA and post-launch support keep AI mistakes away from customers.
How to Choose the Right Call Center Software Development Company?
To choose the right call center software development company, test real telephony work, integration depth and AI safety before comparing price.
7 steps to choose the right call center software development company are given below.
Define your requirements: Document call flows, channels, call volume and must-have integrations first.
Check real telephony experience: Look for SIP, WebRTC, Asterisk or FreeSWITCH work, not only chatbot or mobile portfolios.
Visit live pages and request a demo: Review live pages and ask for a demo of a past call flow.
Confirm proven integrations: Ask for working Salesforce, HubSpot or Zendesk examples.
Ask how the AI handles errors: Learn when a human steps in and how models are retrained.
Verify security and compliance: Check ISO 27001 status, call recording retention and how consent is captured for AI voice calls.
Compare pricing models and start small: Weigh hourly, fixed-scope and dedicated-team options, then begin with a pilot or MVP development phase.
What Are the Pros and Cons of Custom Call Center Software?
The pros and cons of custom call center software are given in the table below.
Pros | Cons |
Exclusive features built around your call flows | Significant upfront investment |
Deep CRM, ERP and helpdesk integration | Longer launch time (3 to 6 months) |
No per-agent license fees once built | Ongoing hosting, update and support costs |
Full data control and reporting | AI models need retraining (accuracy drift) |
Scales with the business | Compliance responsibility sits with you |
A custom build makes sense when call volume is high, workflows are unique or integrations go beyond what standard platforms support.
How Does Custom Call Center Software Compare With Other Options?
Before you build, weigh two decisions: build versus buy, and cloud versus on-premise deployment. Each changes cost, speed and control.
What Is the Difference Between Custom and Off-the-Shelf Call Center Software?
The key difference is ownership versus subscription. Off-the-shelf platforms are ready-made SaaS tools that often charge about $30 to $100 per agent per month, and you follow the vendor's roadmap. Custom builds cost more upfront, but you own them and control every feature. Off-the-shelf fits standard needs, while custom fits unique workflows and deep integrations.
What Is the Difference Between CCaaS and On-Premise Call Center Software?
CCaaS (contact center as a service) runs in the cloud, while on-premise software runs on hardware you own and maintain. An on-premise setup can cost $10,000 to $100,000+ upfront, while cloud hosting runs about $500 to $5,000 per month. Cloud also speeds up change: after moving to Amazon Connect, Capital One ships features in weeks instead of 3 to 6 months.
Final Thoughts
The right call center software development company depends on your call flows, channels and existing stack. These companies build CCaaS platforms, IVR, AI voice agents and analytics. In 2026, AI sits at the core of the platform, so human handoff and compliance matter as much as automation.
Shortlist partners with real telephony experience and start with a pilot. If you are planning VoIP or call center software, talk to the Cloud2Voice team about your call flows.
Frequently Asked Questions
How Long Does It Take to Build Call Center Software?
A narrow pilot usually takes about 4 to 8 weeks, while a full call center system takes about 3 to 6 months. More channels, integrations, AI training and compliance testing extend the timeline, while a clear discovery phase keeps delivery on track.
Can AI Replace Call Center Agents?
No, AI cannot fully replace call center agents because it handles repetitive calls well but struggles with complex and emotional cases. Gartner expects agentic AI to resolve 80% of common issues by 2029, yet 76% of contact center leaders already use human-in-the-loop models.
Can Custom Call Center Software Integrate With an Existing CRM?
Yes, custom call center software can integrate with an existing CRM because developers connect the systems through APIs and map data fields between them. Common options include Salesforce, HubSpot, Zendesk and Microsoft Dynamics 365. SIP trunking also connects it to your existing phone system.
Are AI Voice Calls Legal Under the TCPA?
Yes, AI voice calls are legal under the TCPA only when they meet its consent rules. In February 2024, the FCC ruled that AI-generated voices count as "artificial" voices, so these calls generally need prior express consent unless an exemption applies. This is general information, not legal advice; check each country's rules.
Is It Cheaper to Outsource Call Center Software Development?
Yes, outsourcing call center software development is usually cheaper because offshore and nearshore teams charge lower rates and you skip in-house hiring costs. Outsourced teams often quote $25 to $60 per hour. You can also choose hourly, fixed-scope or dedicated-team models.
Is Custom Call Center Software Worth It?
Yes, custom call center software is worth it for businesses with high call volumes, unique workflows or deep integrations, but less so for small, standard setups. Expect returns to take time: Verint research shows 66% of businesses took more than six months to see ROI from AI implementations.
Mahmudul Hasan
Founder & CEO
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