Linphone vs MicroSIP
Linphone
linphone.org
MicroSIP
microsip.orgSide by side
| Figure | Linphone | MicroSIP |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 1 | 2 |
| Spec score · Softphone Software | 8.1 (#8) | 8.2 (#6) |
| Calling | Features include HD audio and video calling, call forwarding, concurrent call management, recording, DTMF, and Bluetooth headset support. | It supports voice and video calls through SIP providers or PBX systems, as well as direct calls by IP address or domain name. |
| Integrations | Linphone supports LDAP and CardDAV contact synchronization, OpenID Connect and OAuth 2.0 authentication, and Apple APNs and Google Firebase push notifications. | The site names Asterisk, FreePBX, 3CX, and any SIP-compliant provider or server as supported or commonly used infrastructure. |
| Security | Security features include SIP/TLS, SRTP, SRTP-DTLS, ZRTP, end-to-end encryption for exchanged media, and post-quantum encryption using CRYSTALS-Kyber. | The product page lists TLS encryption for SIP signaling and SRTP and DTLS-SRTP for media protection. |
| Support | The free SIP service is reserved for individual users and comes with no guarantee of support; paid support and maintenance services are available by contacting the company. | The contact page says the team answers user questions when possible but may not have time to reply to all inquiries, so replies may be delayed. |
Plans
In their own words
Linphone
Linphone combines VoIP voice and video calling, instant messaging, and videoconferencing in one application. It uses SIP and SIP SIMPLE to interoperate with IP-PBXs, proxies, SBCs, and other SIP systems. Calling features include HD audio and video, call forwarding, concurrent calls, recording, DTMF, and Bluetooth headset support. Its Flexisip or SaaS conferencing option supports meetings with up to 50 participants and screen sharing. Messaging features depend on setup: Flexisip supports group chats, file sharing, read receipts, reactions, voice messages, and ephemeral messages; SIP SIMPLE provides basic one-to-one messaging with third-party accounts. Security features include SIP/TLS, SRTP, SRTP-DTLS, ZRTP, end-to-end encryption for exchanged media, and post-quantum encryption using CRYSTALS-Kyber. Flexisip can be hosted on premises and connected to an existing SIP server for group messaging and videoconferencing. Linphone is open source under GNU GPLv3, with proprietary licensing available for closed-source modifications. The app is available on Android, iOS, Linux, macOS, Windows, and web, with API and self-hosted options. Its free SIP service is for individual users and has no guaranteed support; paid support and maintenance are available by contacting the company.
MicroSIP
MicroSIP is a free Windows desktop softphone for business communication and professional VoIP use. It makes voice and video calls through SIP providers or PBX systems, and can also call an IP address or domain name directly. Call Manager handles multiple simultaneous calls, conferences, blind and attended transfers, and instant messaging. Listed video codecs include H.264, H.263+, VP8, and VP9; DTMF options include in-band, RFC2833, and SIP INFO. SIP signaling can use TLS, while media protection options include SRTP and DTLS-SRTP. MicroSIP says it does not provide user accounts, phone numbers, or telephony services and has no access to end-user information. Windows is listed as supported; Linux, macOS, and BSD are listed for use via Wine. Android, iPhone, and iPad are not supported. The standard edition lists video support, while Lite does not. The project uses the GNU GPL v2 license. A custom-branded softphone build costs €150, paid once; future updates, modifications, or additional features are billed separately.