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Top Competitors to Consider
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Cross‑platform SIP softphone with a clean UI, audio/video calls, and support for multiple accounts.
#3 Linphone
Open‑source SIP client for Windows, macOS, Linux, Android and iOS with voice, video, and instant messaging.
#4 Jitsi
Free, open‑source video‑conferencing and SIP softphone that runs on Windows, macOS, Linux and browsers.
#5 MicroSIP
Lightweight Windows SIP client focused on high‑quality audio, with support for multiple codecs.
#6 3CX Phone
Free softphone for Windows, macOS, iOS and Android that works with the 3CX PBX and any standard SIP server.
#7 Ekiga
Open‑source VoIP and video conferencing application for Linux and Windows, supporting SIP and H.323.
Formerly X‑Lite, now Bria Solo Free – a basic SIP softphone for Windows and macOS with call handling features.
#9 PhonerLite
Simple Windows SIP client with a focus on ease‑of‑use, supporting audio, video, and presence.
#10 QuteCom
Open‑source SIP client for Linux, Windows and macOS offering voice, video, and instant messaging.
Free, open‑source SIP softphone for Linux, Windows, macOS, Android and iOS with encrypted calls.
#12 Blink SIP Client
Free SIP softphone from CounterPath for Windows, macOS, Linux, iOS and Android with HD audio.
#13 SIPDroid
Android SIP client that integrates with the native dialer, offering call logs and contact sync.
#14 CSipSimple
Open‑source Android SIP client with extensive codec support and customizable UI.
iOS and Android SIP client with a free tier that includes basic calling and push‑notifications.
#16 Telephone
Native macOS SIP client with a minimalist design, supporting multiple accounts and Touch ID.
Open‑source telephony platform that includes a softphone module for SIP calling on Linux.
While primarily a VoIP gaming chat, Mumble can be linked to SIP via external bridges for free voice communication.
The original Jitsi SIP client, still available as a lightweight desktop softphone.
Web‑based SIP client that runs in any modern browser, offering free calling through a FreePBX server.
#21 Linphone Desktop
Dedicated desktop version of Linphone with advanced settings, screen sharing, and conference support.