OpenPhone vs Sideline

Sideline offers a basic second number that uses your cell carrier's network. OpenPhone provides a business phone system that can grow with your team.

Why Sideline customers turn to OpenPhone for more

We asked former Sideline customers why they switched from Sideline to OpenPhone. Here's what they shared:

“I switched from Sideline, and I'm so glad I did, as OpenPhone has better features. OpenPhone is a great way to set boundaries with clients and between your business and personal life as well. I love that I can use it with my team as well!”

Mary Beth Lynn

Owner @ Your Vacation Plan

"With our previous phone solution, if I saw a message without a response, I needed to take a screenshot of a text message to notify the studio manager. Now, I can tag them directly in the OpenPhone app and see their response, which is much more efficient."

Laura Ehrman

Regional General Manager @ F45 Training

Professionals at the world's leading companies choose OpenPhone for their communications

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Feature comparison

See the key features OpenPhone has that Google Voice's free version doesn't offer.

Features

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Sideline

Price per month

$15 per user*

$14.49 per user

Unlimited calling to US & CA

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Unlimited in the US only

Shared number

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SMS, MMS to US & CA

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SMS only to Canada

Voicemail to text

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Set business hours

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Additional phone numbers

$5 per number

Requires Enterprise plan

Number porting

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Call recording

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Unified inbox for calls, messages, voicemail

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IVR (phone menu) with extensions

Requires Business plan

Requires Enterprise plan

Team messaging

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Group text messaging

Up to 10 contacts

Up to 10 contacts

Auto-replies

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Slack integration

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Zapier integration

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CRM integration

Requires upgrade

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iOS and Android apps

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Web-based apps

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*When paid annually
Last Updated: August 2023

The Sideline alternative for growing businesses

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Work as a team

  • Split responsibility for incoming calls and texts

    Shared numbers let your team call and message from the same phone number. The line is never busy, multiple teammates can be on separate calls at the same time.

  • Solve customer problems behind the scenes

    Use internal threads in real time with your team to give colleagues additional context or problem solve together using comments that are visible only to your team.

  • Your team can answer calls when you can’t

    Never miss an important call again. With simultaneous ring, anyone on your team that’s available gets incoming call notifications.

Record your calls

  • Easily review call recordings in context

    Call recordings, voice messages, and texts are in a single view so you can easily get up to speed on a conversation and play back any call recordings inside OpenPhone.

  • Set up auto-recording

    Don’t want to worry about remembering to hit record? Turn on auto-recording in OpenPhone to never forget to record a call again.

  • Share call recordings with your team

    OpenPhone supports call recording on every plan, so you can give your teammates feedback, help onboard new hires, and more.

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Scales with your business

  • Always know who said what

    Any time your teammates or call or text you can easily review the full communication trail and coach others as needed. Plus, you don’t have to worry about anyone stepping on each other’s toes — you can even see when a team member is typing.

  • Get as many numbers as your team needs

    OpenPhone offers flexible and transparent pricing without a minimum annual contract, giving you the freedom to choose a plan that suits your needs without any long-term commitments.

  • No steep learning curve

    OpenPhone is flat-out easy to use. In case your team still needs assistance though, check out a walkthrough of our product and extensive Help Center

Connect your favorite tools

  • Auto-log to your CRM

    Effortlessly integrate and automate phone communication logs into Salesforce and HubSpot — giving your team a single source of truth for all interactions with your contacts.

  • Zap your way to efficiency

    Streamline your workflow by automating tedious tasks across over 3,000 applications with OpenPhone's Zapier integration, freeing up your team to prioritize customer satisfaction.

  • Sync with your team in Slack

    Loop in teammates outside of your OpenPhone workspace with the Slack integration. Get all the important messages and feedback automatically sent straight to your favorite channels. No need to go searching for updates – they'll come to you!

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Port your Sideline number to OpenPhone

Have an existing phone number with Sideline or another service? We can port it to OpenPhone for you absolutely free.

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1

Check out OpenPhone for free

Before submitting your port request, try out OpenPhone for free on a seven-day trial with a temporary number so you can explore the platform and confirm it’s a good fit.

2

Unlock your Sideline number

Once your registration has been approved, all you need to do is unlock your Sideline number and submit your port request in the OpenPhone app. Find out more here.

3

Explore OpenPhone

As long as your account is active, your phone number works with Sideline until the port date. After that, your number is officially on OpenPhone.

Why small businesses love using OpenPhone

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Need help? We've got you!

Our customer service team is here to answer any questions you have. Based on your feedback, OpenPhone adds new features every 2-3 weeks.

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#1 business phone on G2

Thousands of professionals and companies trust OpenPhone. Check out why OpenPhone is the #1 rated business phone on G2 in customer satisfaction

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Easily adjust your phone settings

Adding business hours, your voicemail, and other custom phone setting is easy.

Ready to give OpenPhone a try?

See for yourself why thousands of businesses use OpenPhone.

OpenPhone Vs...

Find out how OpenPhone compares to other services