Skip to content

Best OnSIP Alternatives & Competitors




Are you looking😎 for something better than OnSIP?

Although OnSIP has advantages, it might not be able to fully satisfy some of your company’s needs for various reasons, including restricted functionality, flexibility, cost concerns, or other unique issues.

Whatever your reason, you are at the right place, we have gathered the top OnSIP alternatives.

These options are here to make things better, whether it’s by improving customer satisfaction, streamlining processes, or providing cutting-edge features.

🔑 Key Highlight 

  • We have listed the top 10 OnSIP alternatives and competitors according to features and price, considering top customer reviews.
  • KrispCall is an excellent alternative, offering affordability, rich features, high call quality, and round-the-clock human support.
  • Vonage is one of the best for voicemail to email, Vonage meetings, business SMS, and the Portal.
  • Ooma Office enables users to make and receive phone calls from CRM programs like Microsoft Dynamics 365 and Salesforce.

What is OnSIP?

OnSIP is a cloud-based phone system that provides video meetings, reporting dashboards and voice-over-internet protocol (VoIP) calling. Call groups, an auto attendant, and voicemail are among its other features.

What is OnSIP

A softphone and private branch exchange (PBX) system called OnSIP assists companies in streamlining call recording, transfer, monitoring, and reporting processes. It enables businesses to handle voicemails and hold HD video or audio conferences using desktop or mobile applications.

Why do people look for OnSIP alternatives?

OnSIP is a well-known cloud phone☎ system that serves more than 20 countries. Due to some of its limitations and restrictions, people are looking for the ideal solution.

Some of the drawbacks and restrictions that have led some people to search for an alternative to OnSIP are:

  • Limited Customization: With its limited customization possibilities, OnSIP may make it more difficult for customers to adapt the system to their tastes or business requirements.
  • Limited integration options: OnSIP may not be as compatible with a wider variety of tools and software due to potential integration issues with other systems or applications.
  • Reliance on Internet connectivity: OnSIP, in contrast to traditional phone lines, depends on a reliable Internet connection for both functional and high-quality calls. Call quality might be affected, and productivity can be hampered by slow internet or outages.
  • Audio quality: The audio quality may be limited for users, suggesting possible difficulties in attaining the required dependability and clarity of voice communication.

10 Best OnSIP Alternatives and Competitors in 2024.

In the global market, OnSIP has many competitors and alternatives. Even if there are many possibilities available, those who are looking for better solutions might not find them entirely satisfactory.

So, we have listed out 10 OnSIP alternatives and competitors in 2024 based on the following criteria:

  • Advanced Features
  • Pricing Plan
  • Customer Testimonials
  • Integrations
  • Wider Coverage
  • And many more

ProvidersPricingFeaturesBest for
KrispCallStarts at $15/month
Unified Callbox, Shared Number, VoIP/WiFi calling, In-app Call analytics
Small to large-sized businesses
RingCentral MVPStarts at $17.99/user/monthCall Logs, Business SMS & MMS, Team Collaboration, Advanced Analytics
Small to large-sized businesses
Open PhoneStarts at $15/user/monthUnlimited calling and texting within US and Canada International calling, Toll-free numbers, Call forwardingSmall to large-sized businesses
  8×8Contact Sales teamInCall Routing, Automated Call Attendant, 3-way Calling, Call WaitingAll sized business
GrasshopperStarts at $29/monthCustom Greetings, Voicemail With Transcription, Call Forwarding, Offers Virtual Number Small to large-sized businesses
VonageStarts at $19.99/user/month Voicemail to email, Vonage Meetings, Business SMS, Admin PortalSmall to large-sized businesses
GoTo Connect Starts at $27/monthLive Chat, Conference Calling, Screen Sharing, Video ConferencingSmall to mid-sized businesses
AircallStarts at $30/monthSMS Business Text Messaging, IVR, Voicemail, Shared ContactsSmall to large-sized businesses
Ooma Office$19.95/monthVoice intelligence, conference calling, call transferSmall to large-sized businesses
Cloud talk$25/monthCall quality, call recording, SMS/text messagingSmall to large-sized businesses

1. KrispCall

KrispCall is one of the best OnSIP alternatives, a cloud-based virtual phone number intended to enhance customer engagement for companies of all sizes. KrispCall is a global company that operates in more than 100 countries and has gained the confidence of over 4,500 clients by providing innovative features at an affordable price that meets a variety of business demands.

KrispCall best OnSIP Alternatives

KrispCall VoIP phone systems are important for their Unified Callbox feature, which unifies all communication functions into one platform to manage users effectively via a single dashboard. 

This solution promotes better customer service and communication by integrating easily with many tools, including CRM, HelpDesk, and e-commerce.

KrispCall is simple to set up and use and has reasonable price levels along with a 24/7 customer support team.

KrispCall Features

  • Call Forwarding: Never Miss a Call, Wherever You Are
  • Call Analytics and Reporting: Track call data to analyze agent performance and overall effectiveness.
  • Interactive Voice Response (IVR): Guide callers using voice prompts and self-service options.
  • Call Routing: Route them to the right agent faster, reducing hold times and increasing customer satisfaction.
  • Call Recording: Capture, Review, and Elevate Your Conversations

💲KrispCall Pricing

Essential$12/user/month (if paid annually)
Enterprise Custom

❌KrispCall Limitations

  • Unsuitable for Linux and Windows operating systems.
  • We’re still working on features like call barging and bulk messages.

What customers say about KrispCall

KrispCall services are great. I have been using it for the last few months and it helps me to contact the vendors with my offshore team. This app is highly recommended! I could easily get an Australian virtual number with KrispCall. Having multiple numbers in a single workspace helped reduce costs. We can communicate with regional contacts and customers as if we had an office everywhere with virtual numbers. Using KrispCall for remote work has been a game-changer. It makes my offshore team feel like we’re in the same room.

Arsalan Maseel, Project Manager, We Build Foundations Pty Ltd

Switching to KrispCall was a smooth experience. The guys at KrispCall were very helpful. They migrated our VoIP system quickly and also ported our numbers. I was afraid number porting would be a hassle but they resolved it quickly by giving temporary numbers that matched our old numbers until official porting was completed.

Ella Anderson, Market Expansion Specialist

2.RingCenter MVP

RingCentral MVP is another OnSIP alternative that includes all of these capabilities in addition to having unlimited calls, global accessibility, and state-of-the-art technology. With over 400,000 organizations already enabled by the communication platform.

RingCentral as OnSIP Alternative

RingCentral MVP uses cutting-edge noise-canceling technology to transform every call into a pristine conversation. It guarantees easy and seamless communication with features like visible voicemail, excellent video conferencing, and real-time analytics. RingCentral is a formidable rival to MightyCall, offering more features than its rival.

RingCentral Features 

  • Automatic Call Recording
  • Video Meetings & Webinar
  • Ring Out
  • Team Messaging
  • Collaboration
  • Meeting Insights

💲RingCentral Pricing

Core $30/user/month

RingCentral Limitations 

  • Calls from overseas may be subject to hidden fees.
  • Able to manage just nine calls at once 
  • Only four users are allowed to attend the meeting.

3. OpenPhone

Look at OpenPhone as a VoIP provider if you’re looking for an alternative to OnSIP. With OpenPhone, you can easily add a business line to your existing phone number, making it possible for you to take business calls while on the go without carrying around extra SIM cards or phones.

OpenPhone as OnSIP alternatives

Thanks to OpenPhone’s many connectors and adaptability, businesses may boost staff productivity and improve customer happiness, which leads to overall growth. Additionally, it works with iOS, Android, and web browsers.

OpenPhone Features

  • Conference Calls
  • Browser Extension
  • Voicemail to email
  • Automated Attendants
  • Screen Sharing

💲OpenPhone Pricing

Business $23/user/month
Enterprise Contact sales

OpenPhone Limitation

  • Limited Features
  • Call Issues 
  • Slow Customer Service
  • Number Issues

4. Grasshopper

Grasshopper is a good substitute for OnSIP as a cloud-based calling platform with over eighteen years of expertise in the commercial industry. Users may make and receive calls, send texts, and do much more with this affordable and user-friendly virtual phone system.

Grasshopper as OnSIP Alternatives

Grasshopper is a great tool for solopreneurs and small enterprises who want to start with a sales and customer service-focused firm to increase overall efficiency. In addition to vanity numbers and second phone numbers, it provides a variety of phone number varieties.

Grasshopper Features

  • Call Forwarding
  • Custom Greetings
  • Offers Virtual Number
  • Voicemail With Transcription

💲Grasshopper Pricing

Small business $28/user/month

Grasshopper Limitation

  • Unable to handle phone extensions from a mobile device; only from a computer
  • There is a pause in voice transmission.
  • Does not have a feature for recording calls.

5.   8×8

 8×8 is another OnSIP alternatives leading company in the market with more than 35 years of experience in providing telephone solutions. To increase customer satisfaction and productivity, the firm offers unified telecommunication solutions that include chat, video, phone, and cloud contact center capabilities.

8x8 vs OnSIP Alternative

With 8×8’s unified platform, free your teams from incoherent communication and boost productivity with optimized operations. By enabling smooth departmental cooperation, this system unlocks hidden potential and boosts productivity to previously unheard-of levels.

8×8 Features

  • 3-way calling
  • Call Waiting
  • Communication APIs
  • Automated Call Attendant
  • Call Routing

💲8×8 Pricing

Contact Sales Teams

❌8×8 Limitations

  • There are a few voicemail messages. 
  • Constrained SMS Marketing
  • There are only so many voicemail messages. 

6. Vonage

Vonage is one of the top OnSIP replacements in cloud communication solutions, connecting people and companies worldwide since its founding in 2001. Vonage was the first to introduce VoIP technology, which has completely changed phone communication. Today the business offers a wide range of services, going beyond just phone lines. 

Vonage as OnSIP alternatives

Unified communications, home phone service, international calling possibilities, cloud-based phone systems, and communication APIs are some of these solutions. Via a variety of devices, including laptops, desktop computers, and mobile apps, Vonage’s services are easily available. 

Vonage Features 

  • Browser Extension
  • Conference Calls
  • Voicemail to email
  • Automated Attendants
  • Screen Sharing

💲Vonage Pricing


Vonage Limitation

  • Problems with Calls 
  • Restricted Functionalities
  • Issues with Numbers
  • Inadequate Client Care

7. GoTo Connect

GoTo Connect comes at the top list of OnSIP alternatives, that offer customized corporate phone systems with features like integrated video conferencing, team chat, and contact center capabilities. This platform is well-known for its easy-to-use interface, strong administrative capabilities, and 24/7 support, which makes it an invaluable team-building and communication solution for a variety of businesses.

Goto as OnSIP Alternatives

GoTo Connect is well-known for its ability to provide flexible, scalable, and reliable phone systems designed for small to medium-sized enterprises. The focus is on lowering phone expenses, facilitating workforce mobility, and enhancing customer service.

GoTo Connect Features

  • Customization Option
  • Desktop Sharing
  • Call Queues
  • Real-Time Analytics & Monitoring
  • Ring Groups

💲GoTo Connect Pricing


GoTo Connect Limitation 

  • less integration offered than rival
  • There’s no real-time analytics functionality with the Basic Plan.
  • The Basic Plan costs a minute rate for international calls.

8. Aircall

Aircall is a cloud-based VoIP service provider established in 2014. It provides a range of services that are crucial for businesses to manage and enhance client relationships, and it is trusted in more than 100 countries.

Aircall as OnSIP alternatives

Though the customer service and user interface are unresponsive, the product has features like call analytics, live chat, integration, and IVR. 

Aircall Features

  • Call Transcription
  • Call Whispering
  • Virtual Call Center
  • Call Queuing
  • Time-Based Routing

💲Aircall Pricing

CustomContact sales team

Aircall Limitations

  • Difficult call forwarding 
  • Restricted possibilities for customization 

9. Ooma Office

Ooma’s other competitor to OnSIP,  designed with growing companies in mind, makes enterprise-level functionality accessible. Boost the effectiveness of communication with click-to-call, voicemail, call logs, and virtual receptionist tools—all at a price that small companies can afford.

Ooma Office as OnSIP Alternative

VoIP service provider Ooma offers online communication services for both personal and professional usage. Offering a wide range of options, such as caller ID, call forwarding, voicemail to email, call transfer, and more, is where the firm shines.

Ooma Office Features 

  • Call Queuing
  • Call Blocking
  • Private voicemail
  • Virtual Receptionist
  • Call Park
  • Video Conferencing

💲Ooma Office Pricing

Office Pro$24.95/user/month

Ooma Office Limitations

  • Reported for having a bad-quality call
  • Restricted mass outgoing text messaging
  • Call transfer issue for larger installations
  • Possibility of substantial ongoing expenses

10. Cloud Talk

CloudTalk is a good substitute for an OnSIP business calling solution that uses virtual phone systems to improve communication between companies, clients, and teams. Virtual numbers are available on the platform from more than 70 nations. 

CloudTalk as OnSIP Alternative

Moreover, CloudTalk collects and evaluates call data and provides various connectors with CRM and help desk applications. You may customize the client experience to match your company’s objectives using this feature.

CloudTalk Features

  • Call Analysis
  • Caller ID
  • Unlimited Calling
  • Session Routing 
  • Concurrent Calling
  • Speech To Text
  • Custom Greetings

💲CloudTalk Pricing

CustomContact sales team

CloudTalk Limitations

  • Lack of functionality such as mobile apps, webinars, and tool integration
  • Has no restrictions on carriers
  • Restricted Speed 
  • According to user reports, to receive customer assistance, one must pay the top package.


OnSIP is a well-known VoIP phone system, although there are better options available as possible substitutes. While selecting the best alternative, take into account elements like features, customer services & support, demos, trials, and price.

We recommend you go for KrispCall as the best alternative to OnSIP. KrispCall is one of the best VoIP phone systems with enterprise-level features, positive customer feedback, and affordable pricing plans with a 24/7 customer support team.

Whether your business is big or small, get connected with KrispCall today to grow your business, enhance communication, and enjoy our advanced features.


1. What are the pros and cons of switching from OnSIP to another provider?

The pros and cons of switching from OnSIP to another provider are:

Cost savingsTransition Challenges
Improved featuresLearning curve for new platform
Enhanced reliability and scalabilityRisk of service disruption
Better customer supportPorting fees and downtime

2. Which OnSIP alternatives offer similar features, such as auto attendants, call forwarding, and voicemail?

There are several OnSIP alternatives with similar features, such as auto attendants, call forwarding, and voicemail; they are KrispCall, Nextiva, Ooma, CloudTalk, Aircall, etc.

3. Do any providers offer mobile apps for making and receiving calls?

Several providers offer mobile apps for making and receiving calls. KrispCall offers the best mobile app with top features like call routing, call recording, and advanced IVR, along with a 24/7 customer support team and reasonable pricing.

Follow our newsletter !
Subscribe to our newsletter & stay updated for the latest news.
Author Image

Dinesh Silwal

Dinesh Silwal is the Co-Founder and Co-CEO of KrispCall. For the past few years, he has been advancing and innovating in the cloud telephony industry, using AI to enhance and improve telephony solutions, and driving KrispCall to the forefront of the field.

Related Blogs