Best open-source communication libraries & SDKs

Open-source team chat, messaging and collaboration software.

Filters · 2 Communication, Library / SDK

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AI & LLM tooling138Agents & frameworks37Local inference10RAG & vector DBs29Coding assistants4Evals & observability7Agent skills4MCP servers6Developer tools179Web frameworks100Databases & backends15Editors & IDEs3API tools13Self-hosted apps6Notes & docs6Automation19Data & analytics25Infra & DevOps5Security & identity5Communication8Media & photos24Design & creative53

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Web8Docker / self-host17Desktop9Mobile8CLI1Library / SDK8Extension / plugin1

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Permissive5Copyleft1Source-available0Other / custom2

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Has live demo0Commit in last 90 days8

8 projects

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S

Socket.IOsocketio/socket.io

Realtime bidirectional communicationPersonalEnterpriseWeb frameworksCommunicationLibrary / SDK★ 63kMITcommit 4 days ago

84worth

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P

Pipecatpipecat-ai/pipecat

Framework for voice agentsPersonalEnterpriseAgents & frameworksCommunicationLibrary / SDK★ 16kBSD-2-Clausecommit yesterday

80worth

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R

React Emailresend/react-email

Build emails with ReactPersonalEnterpriseWeb frameworksCommunicationLibrary / SDK★ 20kMITcommit yesterday

79worth

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P

PHPMailerPHPMailer/PHPMailer

Email sending library for PHPPersonalEnterpriseCommunicationLibrary / SDK★ 22kLGPL-2.1commit 2 weeks ago

75worth

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M

MJMLmjmlio/mjml

Framework for responsive emailPersonalEnterpriseCommunicationDesign & creativeLibrary / SDK★ 18kMITcommit 3 weeks ago

75worth

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N

Nodemailernodemailer/nodemailer

Send email from Node.jsPersonalEnterpriseCommunicationLibrary / SDK★ 18kcommit 20 hours ago

73worth

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H

Hubothubotio/hubot

Customizable chat botPersonalEnterpriseAutomationCommunicationLibrary / SDK★ 17kMITcommit last week

73worth

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T

TEN FrameworkTEN-framework/ten-framework

Framework for conversational voice agentsPersonalEnterpriseAgents & frameworksCommunicationLibrary / SDK★ 11kcommit 4 days ago

69worth

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