Open Source Voip

Open Voice OS is an open-source, community-driven voice AI platform for building customizable assistants across Raspberry Pi, embedded devices, Linux desktops, and Docker. It provides plugin-based STT/TTS, configurable wake words, extensible skills, and privacy-focused self-hosting.

Voicebox is an open-source desktop app for voice cloning and TTS that clones voices from short samples, supports WAV/MP3/FLAC/WEBM and mic capture, multi-voice timeline editing with effects, local or remote GPU inference, Whisper STT, and API integration.

LiveKit is an open-source framework and cloud platform for building and hosting low-latency real-time voice, video and physical AI agents, offering a media server, WebRTC SDKs, TTS/STT and telephony connectors, scalable hosting and programmatic APIs.

Sayfone is an AI-powered communication tool enabling voice calls across 190 countries via a web browser. It features end-to-end encryption, local number availability, and AI transcription, enhancing productivity and security for global users.

Dograh is an open-source VAPI alternative for building self-deployed AI voice agents, offering a no-code drag-and-drop builder, telephony and multilingual (30+) support, voice customization, advanced NLP with intent handling, intelligent human routing, and real-time analytics.

opentypeless.com is a voice input app that types your speech wherever your cursor is, with real-time AI polishing for grammar and punctuation. It supports streaming dictation in 99+ languages, customizable hotkeys, and integrates with providers like Whisper and Gemini.

OpenCall AI automates phone and text intake for medical practices, verifying insurance, capturing real‑time data, and scheduling through popular PMS/EHRs. It triages requests, escalates complex cases, syncs records, and reduces front‑desk workload 24/7 with HIPAA‑compliant integration to Google tool

DeepSeek-V3 is an advanced AI model offering leading performance in open source LLM, enhanced speed, and global language support. It sets new benchmarks for inference speed among open-source models.

Krisp delivers real‑time noise cancellation, accent conversion, and multilingual voice translation for meetings and call centers. It records calls, transcribes, and summarizes, syncing to CRMs. Developers can embed its voice SDK into custom applications.

Quo is a business phone system that centralizes calls, SMS, voicemails, recordings, and contact history into shared inboxes. Sona AI handles 24/7 call answering, qualification and routing, with automated tagging, summaries, CRM integrations and analytics.

Voice.ai offers cloud‑and on‑prem AI voice agents for calls, scheduling, and queries, supporting 15+ languages. It provides text‑to‑speech, 10‑second voice cloning, real‑time voice change, noise filtering, and integrates with Salesforce, HubSpot, Zendesk, Slack. APIs and SDKs enable scalable deploym

Openwhispr is an open-source AI voice dictation tool that converts speech to text locally, ensuring privacy. It features instant transcription, customizable settings, and API integration, enhancing productivity for coding, writing, and brainstorming across various applications.

OpenRouter gives one API key to access 300+ models from 60+ providers, SDK‑compatible, with visual routing, automated fall‑back, edge hosting, data‑policy controls, and agentic tools for building efficient autonomous workflows.

Openwork is an open-source desktop app that connects 50+ LLMs with team workspaces, shared setups, skills, plugins, and configs. It runs agent workflows and browser automation, integrates with IDEs via a remote MCP server, and lets teams share full workspace configs as one-click links.

PrankGPT lets users generate voice‑based prank calls by entering a phone number, selecting a voice (Marv, Zephyr, or Google Cloud), and providing a prompt. The client‑side app uses Vocode and produces high‑quality audio for hobbyists and developers.

Twenty.com is an open-source CRM and SDK for building customizable CRM solutions, offering modular objects, fields, relations, and TypeScript tooling for technical teams to extend, integrate, and deploy custom applications.

Simple Phones automates inbound call answering with customizable AI voice agents, supports outbound outreach, logs interactions, offers routing and notifications, multilingual voices, web‑crawled knowledge base expansion, and integrates with CRMs and automation tools.

Dialpad is an AI-driven communication platform that facilitates customer interactions via voice, chat, SMS, and email. It integrates with popular apps and offers real-time insights, automated notes, and robust security features for efficient customer support.

Open Apps is an open-source app directory that offers a curated selection of free alternatives to popular software tools, enabling users to find quality open-source solutions across various categories for development and productivity needs.

CallHippo is a cloud business phone system with AI voice agents, parallel/predictive dialers, omnichannel inbox, CRM integrations, global virtual numbers and APIs to centralize customer conversations, automate dialing, route calls intelligently, and provide real-time analytics.

Callin.io delivers sub‑176 ms AI voice agents that can be white‑labelled, deployed on a custom domain without coding, and offer 99.9 % uptime, carrier‑grade redundancy, GDPR/CCPA compliance, encryption, multi‑carrier support, and pre‑built CRM/ITSM connectors.

Voiceflow enables teams to create, test, and deploy AI‑powered conversational agents across chat, voice, phone, and web without coding. Its visual editor, real‑time collaboration, and secure deployment pipelines streamline design, evaluation, and omnichannel rollout.

Open‑Chat is a self‑hostable, decentralized chat platform that supports both proprietary and open‑source AI models. It provides a full chat API, runs LLMs on local GPUs, lowers latency, enhances privacy, and deploys easily on personal or cloud servers.

Convoso is an AI-driven call center software offering predictive, preview, and manual dialing. It features campaign management, compliance tools, and integrates with CRMs to enhance contact rates across various industries like BPO, finance, and insurance.

VideoSDK offers real-time audio/video SDKs and low-latency infrastructure across Web, mobile, and Flutter, with APIs for interactive live streaming, real-time transcription and AI voice agents, SIP integration, session diagnostics, and enterprise-grade routing.

Voicenotes lets users record audio on iPhone, Android, desktop, or web, automatically transcribing and summarizing content. It supports 100+ languages, integrates with video calls, and converts notes into blogs, emails, or tasks, keeping recordings encrypted and private.

Voicemaker is a cloud‑based text‑to‑speech platform offering 1,500+ AI voices in 130+ languages. It lets users adjust pitch, speed, pauses, add effects, clone voices with a minute of audio, and export to MP3, WAV, OGG, AAC, or OPUS.

Uncensored AI delivers a chat platform featuring Claude Opus, Gemini, Grok, and MiniMax M2‑Her. It supports text, audio, image, and code interactions, including image‑to‑video via Image Studio. API beta and usage stats benefit developers, writers, educators, and researchers.

HitPaw VoicePea delivers real‑time voice transformation with 300+ effects and low latency on Windows, macOS, iOS, Android. It supports 50+ audio/video formats, noise‑reduction, pitch control, virtual mic integration, and text‑to‑speech for streams, meetings, and content creation.

Duck.ai offers anonymous access to popular AI models. It ensures privacy by keeping conversations untracked and outside AI training data, with seamless model switching.

VoiSpark is an AI voice generator for text-to-speech and voice cloning, offering 500+ natural voices in 30+ languages. It enables custom emotions, styles, and unique vocal identities, with seamless integration for voiceovers in videos, podcasts, and apps.

FreeTTS delivers browser‑based AI audio utilities: multilingual text‑to‑speech, accurate speech‑to‑text transcription, vocal isolation, voice enhancement, precise cut/join, and format conversion (MP3, WAV, FLAC, OGG, M4A). All processing is local and files auto‑delete after 12 hours.

VoiceDrop delivers ringless voicemail using AI voice cloning from a short sample. Users upload contacts, customize scripts with variables, schedule campaigns, integrate via CRM or API, and monitor compliance‑aware delivery and response analytics.

Voicemod provides real‑time voice modulation on Windows and macOS with a virtual microphone, 200+ AI‑generated voices, soundboard, instant 30‑second replay, low‑latency keybinds, Voicelab editing, on‑device AI, and hardware integration for streaming.

Voice Changer .io allows uploading or live recording, applying effects such as monster, robot, alien, echo, reverse, slow, fast, and custom pitch, previewing them in real time, and downloading the result as .wav for podcasts, videos, streams, or presentations.

Teloz consolidates calls, chat, video, and fax into an omnichannel interface, automating routing with an ACD engine and tools like sentiment analysis. It integrates with CRM, offers real‑time analytics, and supports multi‑device sync for efficient customer service.

Applio is an open-source AI voice cloning tool featuring over 26,000 models, multi-language support, and cross-platform compatibility. Its user-friendly interface and modular codebase cater to both novice and experienced users interested in advanced audio technology.

Altered Studio provides real‑time voice morphing for calls and high‑quality post‑production editing, supporting low‑latency voice skins, accent translation, dysphonia restoration, and GPU‑accelerated workflows for precise editing and voice cloning.

Speechify converts PDFs, DOCX, EPUB, web pages, and more into natural‑sounding audio on iOS, Android, macOS, Windows, and Chrome. It offers an AI assistant that summarizes documents while you listen, supports voice typing, and allows offline access.

Voice AI platform that builds conversational agents in five clicks, automating support, sales, and billing calls. It integrates natively with CRMs and databases for real‑time actions, supports multi‑OS softphones, and records transcriptions for audits.

Sweepr unifies app, web, chat, and IVR into a single interface for telecom and ISP operators. It blends large‑language‑model flexibility with telco heuristics for real‑time support, compliance, and efficient human‑in‑the‑loop escalation.

Voiser offers multilingual text‑to‑speech and speech‑to‑text in 75+ languages, supporting diverse audio/video formats. It provides speaker detection, subtitle editing, voice cloning, avatar lip‑sync, web embed, and API integration for creators and developers.

Superwhisper converts spoken language into polished text for any app, works offline, supports 100+ languages with English translation, offers customizable tone and formatting, includes AI meeting assistant, and allows video/audio transcription with GPT/Claude/Llama models.

OpenEvidence is a secure medical information platform for U.S. healthcare professionals, facilitating question logging, managing protected health information, and streamlining prior authorization letter writing with access to trusted clinical findings and insights from over 10,000 care centers.

ZenCall.ai automates inbound voice routing by intent, sentiment, or CRM value, handling calls 24/7, booking appointments, and syncing with HubSpot, Zendesk, and Salesforce. Global Tier‑1 carrier connectivity and predictive dialing boost connection rates, reduce missed inquiries, and support sales te

VOMO transcribes audio and video into searchable, high‑accuracy text in 50+ languages. It auto‑applies templates, extracts key points, produces concise meeting summaries, offers AI query support, and stores all content in unlimited cloud storage for easy sharing.

Online TTS platform converts text into audio in 100+ languages with 148+ AI voices. Users can tweak speed, pitch, pause, add background music, and download MP3, OGG, AAC, OPUS, or WAV for dubbing, audiobooks, and language learning.

Open SaaS is an open-source framework for building scalable applications with React and Node.js, offering features like pre-configured authentication, payment integrations, TypeScript support, an admin dashboard, and easy deployment without vendor lock-in.

SigmaMind AI builds production voice agents without code, delivering sub‑800 ms latency and real‑time tool orchestration. It integrates with databases, CRMs, and APIs, and supports enterprise features like SOC 2 compliance, encryption, private cloud, and SIP trunking for scalable multichannel suppor

Vocads automates inbound/outbound calls, voicemail, follow‑ups, and surveys using AI agents built from templates and database‑driven dialogues. It supports 12+ languages, real‑time dashboards, 24/7 operation, and secure, multi‑channel deployment and integration.