10 Best OnSIP Alternatives: Compare the Top Competitors

Many businesses move away from OnSIP due to its minimum seat requirements, restrictive SMS usage, and complex call recording setup. Many also switch due to the limited international support, especially when teams extend beyond the US.

• Not ideal for very small teams: OnSIP’s unlimited plan comes with a 5-user minimum, which means smaller teams may have to pay for more than they need when they do not meet this requirement. Also, the basic plan is billed per account and doesn’t include the calling minutes, making it hard for small businesses to predict costs.
• Limits on Shared SMS: While OnSIP supports SMS/MMS, the Unlimited plan only allows 250 messages per account each month. If texting is a regular part of your daily operations, it can feel limiting.
• Queue costs rise with agents: OnSIP’s call queue feature is priced per agent, and the costs grow as more team members are added. Reporting also carries extra charges, so managing a growing support team can get expensive quickly.
• Complex Recording Setup: Call recording in OnSIP requires connecting a third-party storage provider (Amazon S3, Google Cloud Storage, or Rackspace). This adds extra setup steps and may add separate storage costs outside the phone system itself.
• Limited International Support: While OnSIP provides VoIP services and international calling to more than 150 countries, its mobile app functionality and customer support are primarily focused on the U.S. Companies looking to expand beyond the US also often look for its alternatives. 

Calilio is a stronger option than OnSIP for teams that need smarter calling and clearer call outcomes as they scale. While OnSIP covers basic VoIP needs, users often face limitations around advanced call intelligence, global reach, and sales-focused tools.

Features like sentiment analysis, call transcription, and power dialer are notably missing in OnSIP, making it harder for teams to understand customer conversations, measure call quality, or improve performance. OnSIP also lacks the flexibility many growing businesses need when it comes to global calling and optimizing outbound workflows.

On the other hand, Calilio provides virtual phone numbers from 100+ countries and supports global calling, IVR, call on hold, and custom caller ID. Such features help teams create a polished phone experience while serving customers across multiple countries.

Key Features

• Phone numbers from 100+ countries
• Global Calling
• Interactive Voice Response
• Custom Caller ID
• Power Dialer
• Advanced AI features

Pricing Plan

8x8 is suitable for teams that need to handle high call volumes and busy lines, in addition to the basic VoIP. With tools like call queuing, ring groups, and IVR, it helps you to handle calls in an orderly way and route them to available staff instead of being missed.
With 8x8, larger support teams get more control over workforce management with better scheduling and performance tracking than OnSIP usually provides. Its advanced speech recognition can turn conversations into more precise data, making it easier for managers to coach staff and maintain quality standards.

Key Features

• Advanced speech recognition
• Call queuing
• Call monitoring
• Workforce management solution
• Music on hold
• Ring groups

Pricing Plan

RingCentral is a strong OnSIP alternative for teams that need richer calling controls and smoother collaboration. It supports multi-way conference calls, call park, voicemail-to-email, and IVR with an editor, helping businesses manage calls more efficiently than a basic VoIP setup.Moreover, its automatic call recording and flexible IVR setup make call handling easier than OnSIP for many teams. RingOut also helps place business calls from different devices while keeping a consistent caller identity across all channels.

Key Features

• Multi-way Conference Call
• Call Park
• RingOut
• Voicemail-to-email
• Automatic call recording
• IVR & IVR editor

Pricing Plan

Dialpad gives sales and support teams access to AI-powered tools during calls. With automated call distribution plus AI call analytics and reporting, it keeps call handling well-organized and measurable. This makes Dialpad a practical OnSIP alternative for teams focused on performance.Moreover, tools like live coaching, sentiment analysis, and AI-powered quality assurance further improve call management in day-to-day operations. These tools help managers guide agents in real time, review calls faster, and raise service quality with clear insights.

Key Features

• Live coaching
• Sentiment analysis
• AI-powered QA
• Call analytics and reporting
• Automated call distribution

Pricing Plan

Grasshopper is a better alternative to OnSIP for small teams and solo entrepreneurs who want a budget-friendly business phone system. It offers easy mobile and desktop access, making it simple to answer calls and manage business communication from anywhere.While OnSIP offers more advanced features, Grasshopper includes essential tools, like call forwarding, business texting, and voicemail transcription, at a lower price point. So, for those who only need core calling features without the extra complexity or cost, Grasshopper suits them better.

Key Features

• Call forwarding
• VoIP & Wifi calling
• Call recording
• Voicemail transcription
• Business texting
• Desktop & mobile apps

Pricing Plan

Ooma Office keeps business calling simple, with a simple setup. It’s an ideal solution for businesses looking for a quick installation that runs smoothly without heavy training.
Ooma Office also includes unlimited calling across the US, Canada, Mexico, and Puerto Rico, with flexible month-to-month plans without long contracts. It supports traditional phones, IP phones, and mobile or desktop apps. One of its other important features is an AI receptionist that guides callers without manual intervention, making it a convenient, versatile option for a growing business.

Key Features

• Unlimited calling (US, Canada, Mexico, Puerto Rico)
• Virtual receptionist
• Voicemail
• Call management
• Video conference
• Voicemail transcription

Pricing Plan

Quo, formally known as OpenPhone, is an ideal option for teams that share one business number and manage calls and texts collaboratively. Shared numbers, voicemail, and an auto-attendant make it easy to route incoming calls and handle inquiries as a team.Moreover, Quo’s automated workflows, call tagging, and call summaries enhance follow-ups without requiring manual notes. Likewise, its call analytics tool makes it easier to track response and call activity, giving teams clearer visibility and better coordination than OnSIP offers for shared communication needs.

Key Features

• Shared number
• Voicemail
• Automated workflows
• Call tagging & summaries
• Call analytics
• Auto-attendant

Pricing Plan

Aircall is built for sales and support teams, handling high call volume each day. Its call routing and voicemail features help streamline inbound calls, while business messaging and click-to-dial make it easier to reach customers faster.
Aircall’s power dialer tool further speeds up outbound calls, and its after-call work tools help organize notes and outcomes right after each call. With real-time analytics, Aircall also gives clearer visibility into call activity than OnSIP, which helps managers to track performance and improve follow-up processes.

Key Features

• Call routing
• Voicemail
• Business messaging
• Click-to-dial
• After-call work
• Power dialer
• Real-time analytics

Pricing Plan

CloudTalk suits teams that need tighter control over call flows. Its strong call handling and real-time monitoring tool help managers see live activity and keep agents on track.CloudTalk also offers multiple auto dialers, like progressive, smart, and power dialers, to speed up outbound work and reduce manual dialing. Furthermore, its call intelligence, automation, and call analytics features turn conversations into measurable results, making follow-ups and performance tracking easier than with OnSIP for many teams.

Key Features

• Call handling
• Auto dialer ( Power Dialer, Progressive Dialer, Smart Dialer)
• Call intelligence
• Automation
• Real-time monitoring
• Call analytics

Pricing Plan

Nextiva is a strong choice for teams that need reliable call management during busy hours. The tools like call parking, call queues, and intelligent routing make it easier to direct callers to the right agents and reduce the risk of missed calls. Beyond call handling, Nextiva boosts team efficiency with tools like voicemail transcription and real-time transcription, making it easier to review messages and share with team members. Plus, its workflow automation tool helps teams follow up faster and cut down on manual tasks, providing more streamlined operations than OnSIP.

Key Features

• Call park
• Call queues
• Voicemail transcription
• Intelligent routing
• Supervisor dashboard
• Real-time transcription
• Workflow automation

Pricing Plan

OnSIP provides an ideal phone system for businesses that only need a basic VoIP calling platform. However, as a business grows, you may need more advanced telephony features to enhance day-to-day operation or customer service. The OnSIP alternatives listed above offer a wide range of options, whether the goal is to add more features, reduce costs, simplify daily call handling, or improve team collaboration.

Among these options, Calilio stands out as an easy-to-set-up yet feature-rich solution at a reasonable price. It brings global virtual numbers together with advanced tools like IVR, power dialing, call transcription, and sentiment tracking in a single system. It’s a strong phone system for businesses of all sizes, from small teams to large organizations.
 

Calilio is the best OnSIP alternative for small teams. It offers advanced call management features at an affordable price for startups or growing businesses.