5 Best English Text-to-Speech Software: Free, Paid, & Commercial Use
Aug. 28, 2026
Hello, thank you for always using Ondoku.
Text-to-speech software has been increasingly utilized in various situations recently.
Text-to-speech software is extremely convenient once you use it, and it will likely become an essential technology in our future lives.
Therefore, in this article, we will introduce five popular recommended text-to-speech software programs in the English-speaking world.
We will also explain whether these five text-to-speech software programs can be used commercially.
Related articles on text-to-speech software recommended for English reading
In this article, we provide a detailed explanation of text-to-speech software and web services recommended for English reading.
Please take a look.
[Free] Thorough Comparison of English Reading Services! 8 Recommended Sites and Effective Learning Methods
A thorough comparison of the features and usage of 8 free English reading sites! Improve your English skills with listening and pronunciation practice using AI voice services. Explaining how to get high-quality native audio for free.
Recommended text-to-speech software popular in the English-speaking world
- Ondoku
- Amazon polly
- Natural Reader
- Watson
- oddcast
Ondoku
Ondoku is a text-to-speech software characterized by simple, easy-to-understand pages and a user-friendly UI.
Although we called it software, it is not a download version but a SaaS that can be used on a website.
The pricing plans are clear and simple.
- Reading of 5,000 characters/month: Free
- Reading of 200,000 characters/month: 9.99USD/month
- Reading of 450,000 characters/month: 19.99USD/month
- Reading of 1,000,000 characters/month: 29.99USD/month
As you can see, it can be used for free.
Even free members can download audio, and it is a user-friendly service with a wide range of applications.
Features of Ondoku
- Commercial use is possible even with free use
- Text-to-speech can be done for free
- Variety of speakers available
- Reading can be done on the web
- MP3 download available
- UI is easy to understand and use
- Supports not only English but also more than 80 languages and dialects
If you're unsure, we recommend trying Ondoku first!
Amazon Polly
Amazon Polly, Amazon's text-to-speech service that started in November 2016.
It supports more than 40 languages and language variants (such as regional dialects), offers over 100 voices, and covers many languages.
By using an API, it can be integrated into various software and services.
However, without the technical skill to use an API, you cannot fully utilize Amazon Polly's services.
While you can read any text and save audio files from the AWS management console, using the API is necessary to integrate it into your own software or services.
Features of Amazon Polly
- Commercial use possible
- API is required for integration
- Variety of speakers available
- Supports not only English but also more than 40 languages and language variants
Natural Reader
Natural Reader Official Website
Natural Reader is a tool developed for people who struggle with reading text or who cannot read due to disabilities.
It is a SaaS that can be used immediately on a web browser without needing to download.
When using it, the available input screens differ between:
- Personal use
- Commercial use
[Personal Use]
Free users can use "Lite Voices" up to 20,000 characters per day, and "Plus Voices" and "Cloned Voices" up to 4,000 characters per day combined.
If you wish to use more than this, a paid subscription is required.
[Commercial Use]
Free use is not available.
If you wish to use it, a paid subscription is required.
Features of Natural Reader
- Commercial use is not allowed with a standard license
- Commercial use license available
- Variety of speakers available
- Reading can be done on the web
- MP3 download available (paid version only)
- UI is easy to understand and use
- Supports not only English but also more than 90 languages
Watson
Watson is a text-to-speech service developed and provided by IBM.
Similar to Amazon, using an API is necessary to integrate it into your own software or services.
However, according to the terms, the demo page below is limited to use for personal information gathering purposes.
For commercial use, you need to sign a contract for IBM Cloud services.
https://www.ibm.com/demos/live/tts-demo/self-service/home
Features of Watson
- Demo page cannot be used for commercial purposes (commercial use possible with IBM Cloud contract)
- API required
- Variety of speakers available
oddcast
Oddcast, a unique text-to-speech site.
It can read up to 600 characters, and on the right half of the screen, figures of people or animals are projected as if they are speaking.
Depending on the character, it might be a bit scary, but it is a unique service like no other.
Features of oddcast
- No mention of commercial use
- Variety of speakers available
- Character projection function
Why not use popular text-to-speech software for your convenience?
This time, we introduced five popular text-to-speech services.
The world is very vast, and if you look, there are several other types of text-to-speech software and sites. We will introduce those on another occasion.
Personally, my recommendation is still Ondoku.
An easy-to-view website and being able to understand how to use it instantly are very important.
Please consider it as one of your options.
We look forward to seeing you soon.
■ AI voice synthesis software "Ondoku"
"Ondoku" is an online text-to-speech tool that can be used with no initial costs.
- Supports 81 languages and regions, including Japanese, English, Chinese, Korean, Spanish, French, and German
- Available from both PC and smartphone
- Suitable for business, education, entertainment, etc.
- No installation required, can be used immediately from your browser
- Supports reading from images
To use it, simply enter text or upload a file on the site. A natural-sounding audio file will be generated within seconds. You can use voice synthesis up to 5,000 characters for free, so please give it a try.
Email: ondoku3.com@gmail.com
"Ondoku" is a Text-to-Speech service that anyone can use for free without installation. If you register for free, you can get up to 5000 characters for free each month. Register now for free
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