Related Products
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About
Open source portable SIP softphone based on PJSIP stack for Windows OS. It allows you to do high quality VoIP calls (person-to-person or on regular telephones) via open SIP protocol. From cloud of SIP providers you can choose the best option for you, register account and use it with MicroSIP. You'll get free person-to-person calls and cheap international calls. Written in C and C++ with minimal system resources usage. User friendly in daily usage. WebRTC echo cancellation algorithm and voice activity detection. Configurable encryption TLS / SRTP for control and media. It has no additional dependencies and stores setting in ini file. Multilanguage and RTL support, localization for Brazilian, Bulgarian, Chinese, Dutch, Estonian, Finnish, French, German, Hebrew, Hungarian, Italian, Korean, Norwegian, Polish, Russian (микросип), Spanish, Swedish, etc. can be used by people with visual impairments using screen reader software such as NVDA.
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About
TwinPhone is a pay-as-you-go app for cheap international calls and virtual second phone numbers.
Open your browser — or the iPhone app — add credit, and dial any landline or mobile in 145+ countries from $0.02/min.
No SIM, no roaming, no app on the other end: you dial ordinary phone numbers and the person you call answers on their normal phone.
There is no subscription and no contract.
Signing up is free, you pay only for the minutes you use, and the exact rate for the number you dialled is shown before the call connects — no connection fees, no monthly minimum.
You can also rent a virtual second number (US and Canada from $3.19/mo) and take calls and SMS in the browser, keeping your personal number private for marketplaces, sign-ups and verification codes.
Calls are encrypted in transit (TLS + SRTP) and stay stable on hotel or airport Wi-Fi.
Enterprise teams can share one wallet with per-member call logs and CSV export.
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Platforms Supported
Windows
Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Supported
iPad
Supported
Android
Not Supported
Chromebook
Not Supported
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Audience
Businesses and companies interested in a portable SIP softphone solution to make high quality VoIP calls
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Audience
Expats, migrant workers and international families; frequent travellers and remote workers; and small or distributed teams that call abroad or need a second phone number for sign-ups and verification codes — without a SIM, contract or phone system
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
Supported
24/7 Live Support
Supported
Online
Supported
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API
Offers API
Not Supported
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API
Offers API
Not Supported
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Screenshots and Videos |
Screenshots and Videos |
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Pricing
No information available.
Free Version
Not Supported
Free Trial
Not Supported
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Pricing
$0.02
Pay as you go
From $0.02/min
Free Version
Not Supported
Free Trial
Not Supported
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Supported
In Person
Not Supported
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Company InformationMicroSIP
India
www.microsip.org
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Company InformationTwinPhone
Founded: 2026
Czech Republic
www.twin-phone.com
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Categories |
Categories |
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Softphone Features
Audio / Video Conferencing
Supported
Call Logging
Not Supported
Call Recording
Not Supported
Call Transfer
Not Supported
Caller Identification
Not Supported
Chat / Messaging
Supported
Contact Management
Not Supported
Fax Management
Not Supported
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