Felgo

Felgo

FELGO GmbH
Phonon

Phonon

Gradium
+
+

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About

Felgo is a cross-platform SDK for rapid, native app & game development for iOS, Android, Desktop & Embedded. Felgo’s biggest advantage is the big time savings and the easiness to learn compared to other development SDKs. You write less source code and make use of a single code base for all platforms. Less code means fewer bugs and faster releases of new updates from a single team for all platforms. Key Features for Mobile & Desktop: • Create stunning UIs and animations to wow your users and rank higher in the app stores. • Code & time savings up to 80% thanks to the reactive & declarative language and 200+ APIs. Key Features for Embedded: • Create high performance embedded system apps & second screen apps. • Native performance and rapid UI creation, powered by C++ & JavaScript. Felgo is an official Qt Technology Partner. Felgo is in use by over 50.000 developers worldwide and field-proven by Fortune 500 companies across all kinds of industries.

About

Phonon is an open-weight text-to-speech (TTS) model and inference runtime for developers adding speech generation to applications that need local, offline audio. It converts text into spoken audio and can stream speech as it is generated. The runtime provides Rust and Python interfaces, a Swift package for iOS and macOS, JavaScript for browsers, and Android libraries; it can also run as a self-hosted server with an OpenAI-compatible API. Depending on the model variant, it supports English, French, German, Spanish, and Portuguese. Phonon is intended for developers integrating speech into mobile, desktop, web, embedded, and server applications, including offline or privacy-sensitive use cases. The 31-million-parameter English model weights use the Apache 2.0 license; 40-million-parameter language-specific and multilingual weights use CC BY-NC 4.0. The runtime code is separately available under Apache 2.0 or MIT.

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Supported
iPad Supported
Android Supported
Chromebook Not Supported

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Not Supported
On-Premises Supported
iPhone Supported
iPad Supported
Android Supported
Chromebook Not Supported

Audience

Oraganizations looking for a cross-platform SDK for rapid, native app development.

Audience

Developers and product teams building mobile, desktop, web, embedded, or server applications that need text-to-speech, including offline or privacy-sensitive use cases.

Support

Phone Support Supported
24/7 Live Support Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Not Supported

API

Offers API Not Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

Free for personal usage.
https://felgo.com/pricing
Free Version Supported
Free Trial Supported

Pricing

No information available.
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 4.0 / 5
support 5.0 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Pros & Cons from Real Users

Pros

  • Powerful enough with C++ and Python for complex cases, Very easy and productive to code with QML/Javascript for standard functionalities to implement, Rich and useful librairies of components, Quick and good support, Very useful cloud builds, Powerful and mature IDE, Useful plugins, Very useful live client with hot reload, etc.

Cons

  • No dark mode for the documentation, No support for VR (for now).

Training

Documentation Supported
Webinars Supported
Live Online Supported
In Person Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

FELGO GmbH
Founded: 2012
Austria
felgo.com

Company Information

Gradium
Founded: 2025
France, United States
gradium.ai/phonon

Alternatives

Alternatives

Qwen3-TTS

Qwen3-TTS

Alibaba
Piper TTS

Piper TTS

Rhasspy
DoubleCheck Code Analysis

DoubleCheck Code Analysis

Green Hills Software
Simba 3.2

Simba 3.2

Speechify

Categories

Categories

Application Development Features

Access Controls/Permissions Supported
Code Assistance Supported
Code Refactoring Supported
Collaboration Tools Supported
Compatibility Testing Supported
Data Modeling Supported
Debugging Supported
Deployment Management Supported
Graphical User Interface Supported
Mobile Development Supported
No-Code Supported
Reporting/Analytics Supported
Software Development Supported
Source Control Supported
Testing Management Supported
Version Control Supported
Web App Development Not Supported

Integrations

Hugging Face Not Supported

Integrations

Hugging Face Supported
Claim Felgo and update features and information
Claim Felgo and update features and information
Claim Phonon and update features and information
Claim Phonon and update features and information