BI
BigBlueButton
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Supports real-time sharing of audio, video, slides (with whiteboard controls), chat, and the screen. Instructors can engage remote students with polling, emojis, and breakout rooms.

CH
Chatwoot
MIT ·★ 22k+
medium

Customer engagement platform, an open-source alternative to Intercom / Zendesk

FH
Frappe Helpdesk
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Helpdesk software which helps you streamline your company's support, offers an easy setup, clean user interface, and automation tools to resolve customer queries efficiently.

FR
FreeScout
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Email-based customer support application, help desk and shared mailbox (alternative to Zendesk and Help Scout)

GA
Galene
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Video conferencing server that is easy to deploy and that requires moderate server resources.

JM
Jitsi Meet
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WebRTC application that uses Jitsi Videobridge to provide high quality, scalable video conferences

JV
Jitsi Video Bridge
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WebRTC compatible Selective Forwarding Unit (SFU) that allows for multiuser video communication.

LI
LibreDesk
AGPL-3.0 ·★ 2.5k
medium

Self-hosted customer support desk with live chat, email, SLA management, and SSO built in. Free, open source, ships as a single Go binary

MC
MiroTalk C2C
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Real-time cam-2-cam video calls & screen sharing, end-to-end encrypted, to embed in any website with a simple iframe.

MP
MiroTalk P2P
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Simple, secure, fast real-time video conferences up to 4k and 60fps, compatible with all browsers and platforms

MS
MiroTalk SFU
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Simple, secure, scalable real-time video conferences up to 4k, compatible with all browsers and platforms

PL
plugNmeet
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Scalable and high performance web conferencing system

ZA
Zammad
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Easy to use but powerful open-source support and ticketing system.