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Best Productivity ResourcesBy Shushant LakhyaniVerified creator

Framework

VoiceBlender

Open-source voice AI platform for phone and web calls, driven by a REST API.

Visit VoiceBlender4.3

  • Rating

    4.3 / 5

  • Pricing

    Free

  • Difficulty

    Advanced

  • Works on

    Cross-Platform

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What is VoiceBlender?

VoiceBlender is a programmable voice AI platform. It handles SIP and WebRTC call control, multi-party mixing, recording, text-to-speech and speech-to-text, and lets you plug in AI voice agents from providers such as ElevenLabs, Vapi, Pipecat and Deepgram. Everything is controlled through a REST API, webhooks and a WebSocket event stream. It is written in Go and open source under the MIT licence.

Third-party open-source projects. We are not affiliated with their authors; repositories are provided as-is by their maintainers. Review each project's license, code and security before installing. See our Disclaimer.

Pros: what VoiceBlender does well

  • Phone and web calls plus AI agents in one platform
  • Works with several voice AI providers
  • Free and open source (MIT)

Cons: where it falls short

  • You run it yourself
  • Needs your own telephony and AI provider accounts

Who VoiceBlender is for

Developers building AI phone agents, call centres or voice apps who want control of the stack.

Who can skip it

Non-developers looking for a ready-made voice assistant.

VoiceBlender alternatives

Not sold on VoiceBlender? These do a similar job, and each card says what it has in common.

All Communication resources

VoiceStudio

Focus: text to speech, voice cloning and transcription. Shares voice ai with VoiceBlender. An AI tool, not a framework. Rated 4.6 (VoiceBlender: 4.3).

AI ToolFreeCross-Platform
4.6Visit

Bolna

Focus: phone agents, conversational ai and open source. Shares voice ai with VoiceBlender. An AI tool, not a framework. Freemium (VoiceBlender: Free). Adds Web. Rated 4.4 (VoiceBlender: 4.3).

AI ToolFree planWeb, Cross-Platform
4.4Visit

Postiz

Focus: social media, scheduling and open source. Also in AI Productivity and Automation, like VoiceBlender. An AI tool, not a framework. Freemium (VoiceBlender: Free). Adds Web. Rated 4.7 (VoiceBlender: 4.3).

AI ToolFree planWeb
4.7Visit

explainroo

Focus: explainer videos, product demos and ai video. Also in AI Productivity and Automation, like VoiceBlender. An AI tool, not a framework. Adds macOS, Windows and Linux. Rated 4.5 (VoiceBlender: 4.3).

AI ToolFreeCross-Platform, macOS
4.5Visit

Sentio

Focus: email, ai agents and rust. Shares api with VoiceBlender. Adds Web and Linux. Rated 4.5 (VoiceBlender: 4.3).

FrameworkFreeWeb, Linux
4.5Visit

Superpowered AI

Focus: AI assistant, meeting notes and summarization. Also in AI Productivity and Communication, like VoiceBlender. An AI tool, not a framework. Freemium (VoiceBlender: Free). Adds Web and Chrome. Rated 4.5 (VoiceBlender: 4.3).

AI ToolFree planWeb, Chrome
4.5Visit

Free alternatives to VoiceBlender

Want to spend nothing? These free picks cover similar ground.

newsjack

Focus: ai agents, skills and pr. Also in AI Productivity and Communication, like VoiceBlender. An AI tool, not a framework. Rated 4.4 (VoiceBlender: 4.3).

AI ToolFreeCross-Platform
4.4Visit

OpenGateLLM

Focus: llm gateway, self-hosted and open source. Shares api with VoiceBlender. Adds Linux. Rated 4.4 (VoiceBlender: 4.3).

FrameworkFreeCross-Platform, Linux
4.4Visit

slackcli

Focus: slack, cli and terminal. Also in Communication and Automation, like VoiceBlender. A desktop app, not a framework. Adds macOS, Windows and Linux. Rated 4.4 (VoiceBlender: 4.3).

Desktop AppFreemacOS, Windows
4.4Visit

tlgr

Focus: telegram, cli and ai agents. Also in Automation and Communication, like VoiceBlender. An automation tool, not a framework. Adds macOS, Windows and Linux. Same 4.3 rating.

Automation ToolFreemacOS, Windows
4.3Visit

CODY AI

Focus: ai, whatsapp and bot. Also in AI Productivity and Communication, like VoiceBlender. An AI tool, not a framework. Adds Web and Android. Rated 4.2 (VoiceBlender: 4.3).

AI ToolFreeWeb, Android
4.2Visit

OpenWA

Focus: whatsapp, self-hosted and messaging. Shares api with VoiceBlender. A web app, not a framework. Adds Web and Linux. Rated 4.5 (VoiceBlender: 4.3).

Web AppFreeWeb, Linux
4.5Visit
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