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Top Competitors to Consider
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#2 Signal
Secure, end‑to‑end encrypted voice and video calls with a focus on privacy.
#3 Discord
Free voice channels and direct calls for gamers and communities, with low‑latency audio.
Free version includes unlimited chat and voice/video calls for up to 100 participants.
#5 Jitsi Meet
Open‑source video‑conferencing platform that also supports high‑quality VoIP calls without registration.
#6 Mumble
Low‑latency, open‑source voice chat primarily used by gamers; self‑hosted or via public servers.
#7 Viber
Free voice and video calls worldwide, with end‑to‑end encryption for personal chats.
#8 Skype
Classic Microsoft VoIP service offering free voice/video calls to other Skype users.
Decentralized messenger with secure VoIP and video calls built on the Matrix protocol.
#10 Wire
Secure collaboration suite with free voice and video calls for up to 5 participants per room.
#11 Tox
Peer‑to‑peer, encrypted instant messaging and voice/video calling without central servers.
#12 Linphone
Open‑source SIP client for Android, iOS, macOS, Windows, and Linux with free VoIP calling.
Cross‑platform SIP softphone offering free voice calls through any SIP provider.
#14 Jami
Distributed, secure voice, video, and chat app that works without a central server.
#15 Rocket.Chat
Open‑source team chat with built‑in VoIP calling via WebRTC plugins.
Self‑hosted chat platform that can be extended with free VoIP plugins for voice calls.
#17 Talky
Simple, browser‑based video/voice calling service with no account required.
Free conference calling service offering unlimited voice minutes and dial‑in numbers.
Google’s free video‑meeting platform that also supports high‑quality voice‑only calls.
#20 Zoom (Free tier)
Popular video‑conferencing tool that allows voice‑only meetings up to 40 minutes for free.
Telegram’s experimental client with enhanced voice‑call performance and lower latency.