Showing 119 open source projects for "sapi speech engine"

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  • 1
    RHVoice

    RHVoice

    Free open source speech synthesizer for Russian and other languages

    RHVoice is a free and open-source multilingual speech synthesizer. Its developers hope to give more visually impaired people the ability to use a good free synthesis voice reading in their native language with their screen reader. We are especially interested in supporting those languages for which there are currently no good voices that could be used with a screen reader. The creator of RHVoice, Olga Yakovleva, is blind herself. Many of the contributors to the RHVoice project, both...
    Downloads: 60 This Week
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  • 2
    kokoro-onnx

    kokoro-onnx

    TTS with kokoro and onnx runtime

    kokoro-onnx is a text-to-speech toolkit that wraps the Kokoro neural TTS model in an easy-to-use ONNX Runtime interface, so you can generate speech from Python with minimal setup. It focuses on running efficiently on commodity hardware, including macOS with Apple Silicon, while still delivering near real-time performance for many use cases. The project ships prebuilt model files and a simple example script, so you can go from installation to producing an audio.wav file in just a few steps....
    Downloads: 352 This Week
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  • 3
    pyttsx3

    pyttsx3

    Offline Text To Speech synthesis for python

    pyttsx3 is an offline text-to-speech library for Python that wraps native speech engines instead of calling cloud APIs. It is designed to work entirely without an internet connection, making it suitable for local automation, kiosks, accessibility tools, and embedded applications. On Windows it uses SAPI5, on Linux it typically uses eSpeak or eSpeak-NG, and on macOS it can use NSSpeechSynthesizer or AVSpeechSynthesizer, giving it broad cross-platform compatibility.
    Downloads: 25 This Week
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  • 4
    Step-Audio

    Step-Audio

    Open-source framework for intelligent speech interaction

    ...Through its architecture, Step-Audio supports multilingual interaction, dialects, emotional tones (joy, sadness, etc.), and even more creative speech styles (like rap or singing), while allowing dynamic control over speech characteristics. It also provides a “generative data engine,” which can produce synthetic speech data (cloning voices, varying style) to support TTS training.
    Downloads: 2 This Week
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  • 5
    Voice-Pro

    Voice-Pro

    Comprehensive Gradio WebUI for audio processing

    Voice-Pro is the best gradio WebUI for transcription, translation and text-to-speech. It can be easily installed with one click. Create a virtual environment using Miniconda, running completely separate from the Windows system (fully portable). Supports real-time transcription and translation, as well as batch mode.
    Downloads: 27 This Week
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  • 6
    abogen

    abogen

    Generate audiobooks from EPUBs, PDFs and text with captions

    abogen is a tool designed to generate audiobooks (or speech narrations) from textual sources such as EPUBs, PDFs, or plain text, with synchronized captions. In other words, it automates the pipeline of reading a digital book (or document), converting its text into speech via a TTS engine, and packaging the result into an audiobook format — likely along with timestamped captions or subtitles that align with the spoken audio.
    Downloads: 11 This Week
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  • 7
    RealtimeSTT

    RealtimeSTT

    A robust, efficient, low-latency speech-to-text library

    RealtimeSTT is a Python-based realtime speech-to-text engine emphasizing low latency, wake-word detection, voice activity detection, and automatic speech segmentation. It provides asynchronous callbacks, nanosecond-precision timestamps, and CLI tools, suitable for building voice assistants, meeting transcribers, or live caption systems.
    Downloads: 1 This Week
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  • 8
    AI Runner

    AI Runner

    Offline inference engine for art, real-time voice conversations

    AI Runner is an offline inference engine designed to run a collection of AI workloads on your own machine, including image generation for art, real-time voice conversations, LLM-powered chatbots and automated workflows. It is implemented as a desktop-oriented Python application and emphasizes privacy and self-hosting, allowing users to work with text-to-speech, speech-to-text, text-to-image and multimodal models without sending data to external services.
    Downloads: 13 This Week
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  • 9
    ESPnet

    ESPnet

    End-to-end speech processing toolkit

    ESPnet is a comprehensive end-to-end speech processing toolkit covering a wide spectrum of tasks, including automatic speech recognition (ASR), text-to-speech (TTS), speech translation (ST), speech enhancement, speaker diarization, and spoken language understanding. It uses PyTorch as its deep learning engine and adopts a Kaldi-style data processing pipeline for features, data formats, and experimental recipes.
    Downloads: 0 This Week
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  • 10
    Qwen3-ASR

    Qwen3-ASR

    Qwen3-ASR is an open-source series of ASR models

    Qwen3-ASR is an automatic speech recognition system in the QwenLM family, developed to convert spoken language into text with strong accuracy and real-time performance. As a specialized ASR variant of the broader Qwen language model ecosystem, it focuses on capturing reliable transcriptions from audio sources such as recordings, live streams, or conversational inputs while supporting low latency use cases. The architecture combines advanced neural acoustic modeling with context-aware...
    Downloads: 4 This Week
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  • 11
    EasyVoice

    EasyVoice

    Open source text-to-speech tool, supports extra-long text

    easyVoice is an open-source text-to-speech platform aimed at turning long-form text and novels into high-quality audio, with a strong focus on usability and scalability. It provides a web interface where users can paste or upload large texts and generate speech and subtitles in a single workflow, even for works exceeding 100,000 characters. The system supports multi-role voice acting, letting users assign different neural voices to different characters or narrative roles and configure...
    Downloads: 5 This Week
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  • 12
    RealtimeTTS

    RealtimeTTS

    Converts text to speech in realtime

    RealtimeTTS is a low-latency text-to-speech library built for real-time applications such as voice chat with LLMs, assistants, and interactive tools. It is designed around a streaming model: you can feed it text incrementally (for example, as an LLM responds) and get audio output almost immediately, which keeps end-to-end latency very low. The library is engine-agnostic and plugs into a wide range of cloud and local TTS systems, including OpenAI, ElevenLabs, Azure, Coqui, Piper, StyleTTS2, Edge TTS, Google TTS, system TTS and others, so you can swap providers without rewriting your pipeline. ...
    Downloads: 1 This Week
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  • 13
    Dicio assistant

    Dicio assistant

    Dicio assistant app for Android

    Dicio is a free and open source voice assistant for Android that focuses on strong privacy by running its understanding and response generation directly on the device whenever possible. It supports multiple input and output methods, including hotword-based voice input using the Vosk speech-to-text engine and a graphical interface for users who prefer to tap instead of talk. The assistant is built around a flexible “skills” system that lets it respond to a wide variety of requests such as search, weather, navigation, calculator, timers, media control, and more. It offers rich multilingual support and is already available in a wide range of languages including English, Spanish, German, French, Italian, Russian, and others. ...
    Downloads: 7 This Week
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  • 14
    Transcoder

    Transcoder

    Hardware-accelerated video transcoding using Android MediaCodec APIs

    Transcoder by DeepMedia is an AI-powered video-to-video speech translation engine that enables fully automated multilingual dubbing. Unlike traditional speech translation systems that rely on multi-stage pipelines, Transcoder directly translates one speaker’s video into another language while preserving facial expressions, lip-sync, and vocal identity. Designed for real-time use and production-grade pipelines, Transcoder combines advanced deep learning models with GPU acceleration to deliver high-quality translations across languages. ...
    Downloads: 3 This Week
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  • 15
    Concat

    Concat

    Open-Source CapCut replacement (MCP supported)

    Concat is a free and open-source desktop video editor positioned as a local alternative to subscription-based editors such as CapCut. It uses a native Rust engine and performs editing entirely on the user’s machine. Projects can contain multiple tracks and timelines for more complex compositions. Core editing tools include splitting, trimming, merging, transitions, and playback-speed adjustment. Offline features include automatic captions, local text-to-speech voices, voice processing, titles, and styled text. ...
    Downloads: 2 This Week
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  • 16
    Rhino

    Rhino

    On-device Speech-to-Intent engine powered by deep learning

    Rhino is Picovoice's Speech-to-Intent engine. It directly infers intent from spoken commands within a given context of interest, in real-time. The end-to-end platform for embedding private voice AI into any software in a few lines of code. Design with no limits on top of a modular platform. Create use-case-specific voice AI models in seconds. Develop voice features with a few lines of code using intuitive and cross-platform SDKs.
    Downloads: 3 This Week
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  • 17
    Smile

    Smile

    Statistical machine intelligence and learning engine

    Smile is a fast and comprehensive machine learning engine. With advanced data structures and algorithms, Smile delivers the state-of-art performance. Compared to this third-party benchmark, Smile outperforms R, Python, Spark, H2O, xgboost significantly. Smile is a couple of times faster than the closest competitor. The memory usage is also very efficient. If we can train advanced machine learning models on a PC, why buy a cluster? Write applications quickly in Java, Scala, or any JVM...
    Downloads: 4 This Week
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  • 18
    gse

    gse

    Go efficient multilingual NLP and text segmentation

    Go efficient multilingual NLP and text segmentation; support English, Chinese, Japanese and others. Gse is implements jieba by golang, and try add NLP support and more feature. Support common, search engine, full mode, precise mode and HMM mode multiple word segmentation modes. Support user and embed dictionary, Part-of-speech/POS tagging, analyze segment info, stop and trim words. Support multilingual: English, Chinese, Japanese and others. Support Traditional Chinese. Support HMM cut text use Viterbi algorithm. Support NLP by TensorFlow (in work). ...
    Downloads: 2 This Week
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  • 19
    Cactus

    Cactus

    Low-latency AI inference engine optimized for mobile devices

    Cactus is a low-latency, energy-efficient AI inference framework designed specifically for mobile devices and wearables, enabling advanced machine learning capabilities directly on-device. It provides a full-stack architecture composed of an inference engine, a computation graph system, and highly optimized hardware kernels tailored for ARM-based processors. Cactus emphasizes efficient memory usage through techniques such as zero-copy computation graphs and quantized model formats, allowing large models to run within the constraints of mobile hardware. It supports a wide range of AI tasks including text generation, speech-to-text, vision processing, and retrieval-augmented workflows through a unified API interface. ...
    Downloads: 3 This Week
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  • 20
    Simple TTS Reader

    Simple TTS Reader

    A small clipboard reader

    Simple TTS Reader is a small utility that reads text from your clipboard using Microsoft Speech API. Whenever you copy any text, the app instantly converts it into spoken words. Select your preferred speech engine from those installed on your system, such as Microsoft Zira, and adjust speed and volume for personalized playback. The application can also be minimized to the system tray. Plus, it is free and comes with an intuitive interface that makes it accessible to everyone.
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    Downloads: 57 This Week
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  • 21
    Scribe

    Scribe

    Free, open-source, and offline speech-to-text & voice control app.

    ...Powered by the Vosk engine, it supports multiple languages and provides high-quality recognition without an internet connection. > Scribe is the perfect tool for anyone looking to boost productivity, improve accessibility, or simply interact with their computer in a new, hands-free way.
    Downloads: 96 This Week
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  • 22
    Universal-TTS-Pro

    Universal-TTS-Pro

    Portable, fully offline Text-to-Speech (TTS) supporting 30+ languages

    Fast Download: https://github.com/szabiz/Universal-TTS-Pro/releases/download/1.3.4/UniversalTTS_Pro_1.3.4.zip • Universal TTS Pro: Converts text to speech offline. • Dual TTS Engine: Piper & Supertonic (100% private, local processing). • Smart Normalization & Number-to-Words supporting Hungarian (HU), English (EN), and Romanian (RO). • Max Chunk Length control, Volume settings, and Supertonic 3 phonetic corrections. • Clean, smaller executable build with improved audio export quality (no clipping)...
    Downloads: 12 This Week
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  • 23
    AudioBC

    AudioBC

    Offline desktop app to convert EPUB to MP3 using Kokoro-82M neural TTS

    AudioBC is a powerful desktop application designed to turn your digital library into a personal audiobook collection. Unlike most Text-to-Speech (TTS) tools that require expensive cloud API subscriptions or an active internet connection, AudioBC runs entirely on your local machine. Powered by the state-of-the-art Kokoro-82M neural engine, AudioBC produces natural, human-like speech that rivals premium cloud services. It is built with a focus on privacy and simplicity, offering a streamlined three-step workflow: Extract, Edit, and Convert. ...
    Downloads: 7 This Week
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  • 24
    JSpeech

    JSpeech

    Java library designed to integrate Speech-to-Text

    jSpeech is a Java library designed to integrate Speech-to-Text (STT) capabilities, command control, and diarization (speaker identification) into applications in a simple, modular, and decoupled way.
    Downloads: 0 This Week
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  • 25
    AudioEnhancerMAX

    AudioEnhancerMAX

    Local-first AI audio processing, transcription and mastering

    ...External TTS, local Ollama editorial assistance, and LAN processing are optional, independently controlled, and disclosed. Version 3.7 adds five delivery profiles, BS.1770-based delivery guidance, processing reports, blind A/B review, SHA-256 Project Capsules, and explicit engine/fallback reporting. The direct-download DMG is Developer ID signed, Apple-notarized, and stapled. MIT licensed.
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    Downloads: 43 This Week
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