Top 10 Open Source Alternatives to Murf.ai in 2025

As the need for advanced text-to-speech (TTS) technologies grows, 2025 brings a plethora of open-source alternatives to Murf.ai. These tools provide extensive customization, multilingual support, and various integrations, meeting diverse user needs. Here's a detailed comparison of the top 10 open-source alternatives to Murf.ai.

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1. Balabolka

Platform: Windows
File Format Support: DOCX, EPUB, HTML, and more
Voice Options: Offers a range of voices, including high-quality lifelike options
Customization: Allows adjustments to pitch, speed, and volume
Audio Output: Can save speech as audio files in various formats Learn more about Balabolka

2. Mozilla TTS

Voice Quality: High-quality, natural-sounding speech output using neural networks
Customization: Users can train their own models using custom datasets
Multi-Speaker Support: Capable of generating speech for different speakers
Language Support: Supports multiple languages with pre-trained models
Open Source: Available on GitHub Explore Mozilla TTS

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3. Coqui TTS

User-Friendly API: Simplifies the integration of TTS into applications
Language Support: Extensive, with models for various languages and dialects
Active Community: Regular updates and contributions from developers
Voice Quality: Offers good quality voice output
Open Source: Available on GitHub Discover Coqui TTS

4. eSpeak

Footprint: Small and ideal for devices with limited resources
Language Support: Supports many languages and offers a variety of voices
Method: Uses formant synthesis
Customizable: Allows for voice alterations within limits
Output: Produces WAV files and is partially compatible with HTML and SSML Investigate eSpeak

5. Bark AI

Open Source: Available on GitHub
Multilingual: Generates speech in multiple languages
Audio Capabilities: Can generate music, background noise, and simple sound effects, in addition to speech
Technology: Built on top of Tacotron 2
Free: It is free to use Check out Bark AI

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6. Festival

Architecture: Modular, allowing for customization and extensions
Language Support: Includes various voices and languages
Integration: Can be easily integrated with other software systems
Open Source: It is free to use
Flexibility: Offers many customization options Explore Festival

7. SAM (Software Automatic Mouth)

Platform: Runs on most popular platforms (Firefox, Chrome, Safari + iOS)
Technology: Includes Text-To-Phoneme converter and a Phoneme-To-Speech routine
Customization: Has options to change speed, pitch, mouth, and throat attributes
Open Source: It is free to use
Unique: Replicates the old 80's computer voice Discover SAM

8. Ultravox

Speed: Fast enough for real-time AI conversations
Integration: Works directly with Llama 3 without needing separate speech to text
Real Time: Time-to-first-token (TTFT) of approximately 150ms
Open Source: It is free to use
Limitations: Currently does not support voice cloning Explore Ultravox

9. xtts-v2

Base: Built on TortoiseTTS
Additional Functionality: Offers extra features not in base TortoiseTTS
Open Source: It is free to use
Community: Part of the Coqui-AI community
Multiple Voices: Can generate multiple voices Discover xtts-v2

10. Kokoro v0.19

Parameters: 82 million parameters
Training: Trained on less than 100 hours of audio, and less than 20 epochs
Rank: Ranked number 1 in the TTS Spaces Arena as of January 15, 2025
Open Source: Free and licensed under Apache 2.0
Performance: Delivers high performance despite being a small model Learn more about Kokoro v0.19

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FAQ

1. What is Balabolka?

Balabolka is an open-source text-to-speech tool for Windows, known for its versatility and customization options. It supports a wide range of file formats and allows users to adjust pitch, speed, and volume, saving speech as audio files.

2. How does Mozilla TTS work?

Mozilla TTS is a deep learning-based, open-source TTS system that focuses on producing high-quality, natural-sounding speech. Users can train their models using custom datasets. Learn more about Mozilla TTS

3. What is Coqui TTS?

Coqui TTS is an open-source, community-driven project derived from Mozilla TTS. It features a user-friendly API and supports various languages and dialects. Learn more about Coqui TTS

4. What are the features of eSpeak?

eSpeak is a lightweight, open-source software speech synthesizer suitable for embedded systems. It supports multiple languages, produces WAV files, and allows some voice customization.

5. What does Bark AI offer?

Bark AI is a free, open-source tool capable of generating realistic, multilingual speech, as well as music and sound effects. It is built on top of Tacotron 2. Explore Bark AI

6. What is Festival TTS?

Festival is a multi-lingual speech synthesis system that offers a framework for building customizable and extensible TTS applications. Learn more about Festival TTS

7. What is SAM (Software Automatic Mouth)?

SAM is a small text-to-speech program written in Javascript and an adaptation of the 1982 Commodore C64 speech software. It runs on most major platforms and allows for customization of speech attributes. Discover SAM

8. What is Ultravox?

Ultravox is a new, fast, open-source text-to-speech system designed to transform audio for Meta's Llama 3 model, suitable for real-time AI conversations.

9. What is xtts-v2?

xtts-v2 is part of the Coqui-AI TTS project, built on TortoiseTTS with additional features. It supports multiple voice generation.

10. What is Kokoro v0.19?

Kokoro v0.19 is a cutting-edge, open-source text-to-speech model with 82 million parameters. It is known for its high performance despite its small size. Discover Kokoro v0.19

References

About the Author

Violetta Bonenkamp, also known as MeanCEO, is an experienced startup founder with an impressive educational background including an MBA and four other higher education degrees. She has over 20 years of work experience across multiple countries, including 5 years as a solopreneur and serial entrepreneur. She’s been living, studying and working in many countries around the globe and her extensive multicultural experience has influenced her immensely.

Violetta is a true multiple specialist who has built expertise in Linguistics, Education, Business Management, Blockchain, Entrepreneurship, Intellectual Property, Game Design, AI, SEO, Digital Marketing, cyber security and zero code automations. Her extensive educational journey includes a Master of Arts in Linguistics and Education, an Advanced Master in Linguistics from Belgium (2006-2007), an MBA from Blekinge Institute of Technology in Sweden (2006-2008), and an Erasmus Mundus joint program European Master of Higher Education from universities in Norway, Finland, and Portugal (2009).

She is the founder of Fe/male Switch, a startup game that encourages women to enter STEM fields, and also leads CADChain, and multiple other projects like the Directory of 1,000 Startup Cities with a proprietary MeanCEO Index that ranks cities for female entrepreneurs. Violetta created the "gamepreneurship" methodology, which forms the scientific basis of her startup game. She also builds a lot of SEO tools for startups. Her achievements include being named one of the top 100 women in Europe by EU Startups in 2022 and being nominated for Impact Person of the year at the Dutch Blockchain Week. She is an author with Sifted and a speaker at different Universities. Recently she published a book on Startup Idea Validation the right way: from zero to first customers and beyond and launched a Directory of 1,500+ websites for startups to list themselves in order to gain traction and build backlinks.

For the past several years Violetta has been living between the Netherlands and Malta, while also regularly traveling to different destinations around the globe, usually due to her entrepreneurial activities. This has led her to start writing about different locations and amenities from the POV of an entrepreneur. Here’s her recent article about the best hotels in Italy to work from.

About the Publication

Fe/male Switch is an innovative startup platform designed to empower women entrepreneurs through an immersive, game-like experience. Founded in 2020 during the pandemic "without any funding and without any code," this non-profit initiative has evolved into a comprehensive educational tool for aspiring female entrepreneurs.The platform was co-founded by Violetta Shishkina-Bonenkamp, who serves as CEO and one of the lead authors of the Startup News branch.

Mission and Purpose

Fe/male Switch Foundation was created to address the gender gap in the tech and entrepreneurship space. The platform aims to skill-up future female tech leaders and empower them to create resilient and innovative tech startups through what they call "gamepreneurship". By putting players in a virtual startup village where they must survive and thrive, the startup game allows women to test their entrepreneurial abilities without financial risk.

Key Features

The platform offers a unique blend of news, resources,learning, networking, and practical application within a supportive, female-focused environment:

Skill Lab: Micro-modules covering essential startup skills
Virtual Startup Building: Create or join startups and tackle real-world challenges
AI Co-founder (PlayPal): Guides users through the startup process
SANDBOX: A testing environment for idea validation before launch
Wellness Integration: Virtual activities to balance work and self-care
Marketplace: Buy or sell expert sessions and tutorials

Impact and Growth

Since its inception, Fe/male Switch has shown impressive growth:

3,000+ female entrepreneurs in the community
100+ startup tools built
5,000+ pieces of articles and news written

Partnerships

Fe/male Switch has formed strategic partnerships to enhance its offerings. In January 2022, it teamed up with global website builder Tilda to provide free access to website building tools and mentorship services for Fe/male Switch participants.

Recognition

Fe/male Switch has received media attention for its innovative approach to closing the gender gap in tech entrepreneurship. The platform has been featured in various publications highlighting its unique "play to learn and earn" model.