[2026 Edition] 10 Best Text-to-Speech Software! Detailed Explanation of Recommended Services for Commercial Use

Text-to-speech software refers to software that converts text into audio and reads it aloud automatically.

There are web services that you can use from a browser and software that you install on your PC, and it is also possible to use them for commercial purposes.

By using text-to-speech software, you can conveniently turn text into audio for various purposes such as:

• Video narration
• Announcements in shops and public facilities
• Improving the accessibility of corporate and government websites

Recently, speech synthesis technology using AI has progressed rapidly, making it easy for anyone to create realistic audio that sounds like a human is reading it.

In this article, we will introduce recommended text-to-speech software and services.

We will also explain software and services that are commercial use OK, so if you are looking for a way to read text aloud, why not use this article as a reference to try a recommended text-to-speech tool?

【Commercial Use OK】Recommended Free Text-to-Speech Sites

There is a service we recommend for those looking for software or sites to read audio aloud.

That is 『Ondoku』.

『Ondoku』 is a service where anyone can easily read text aloud in audio.

Using the latest AI, it can read aloud realistically with high-quality audio that sounds as if a human is actually reading it.

Since it is a web service used from a browser, no troublesome installation is required.

You can read text aloud right now from this page.

Of course, commercial use is also OK.

Moreover, "Ondoku" can be used for free with no registration or login required!

If you are looking for text-to-speech software or sites, why not start by using 『Ondoku』 for free?

What are Text-to-Speech Software & Reading Sites? 【AI is Recommended!】

If you want to read audio from text, text-to-speech software & reading sites using the latest AI are recommended.

First, we will briefly explain text-to-speech software and reading sites.

Features of Text-to-Speech Software and Reading Sites

Text-to-speech software and sites are software or sites for reading aloud text (sentences) and turning them into audio.

The function to read text aloud has existed for a long time, but it was common for the audio to be unrealistic, where you could immediately tell a machine was reading it.

However, in recent years, with the rapid development of AI, it has become possible to read aloud with extremely realistic audio compared to before.

Furthermore, since some high-performance text-to-speech software and sites using AI can be used for free, anyone can read text aloud immediately.

Many software and sites also allow commercial use, so they can be used for work as well.

Recommended Points & Benefits of Text-to-Speech Software and Reading Sites

For text-to-speech, it is possible to read it yourself or request a professional narrator or voice actor.

However, if you are going to turn text into audio from now on, using text-to-speech software or sites is recommended.

Text-to-speech software and sites have the following benefits.

1. Generate Clear Audio for Free

The greatest merit of using text-to-speech software and sites is that you can generate clear and easy-to-understand audio for free.

If you want to create an audio file for free, reading it yourself is one method, but when an ordinary person who has never studied narration or acting records audio, it usually becomes very difficult to hear.

*You can easily tell if you try recording it yourself with a smartphone's voice recorder.

In contrast, with text-to-speech software and sites, it is possible to generate high-quality audio on par with professional narrators and voice actors for free.

Clarity is important for video narration and shop announcements.

To create clear reading audio, we recommend using text-to-speech software and sites that use the latest AI.

2. Low Cost and High Cost Performance

High cost performance is another reason why we recommend text-to-speech software and sites.

Text-to-speech software and sites using the latest AI can be used for free.

Furthermore, there are software and sites like 『Ondoku』 that are available for commercial use even in the free version.

Since requesting professional narrators or voice actors requires very high fees, it is recommended to use text-to-speech software or sites when emphasizing cost performance.

3. No Editing Required After Reading

If you read the text yourself and record it, audio editing work becomes necessary.

Actually, audio editing work is very difficult.

• Unnecessary parts like "uh" and "um"
• Mistakenly read parts

Even minimal editing, such as cutting these, takes a considerable amount of time.

Even if you request professional narrators or voice actors, it takes time until delivery because the editing work is performed at the requested company or office.

In contrast, with text-to-speech software and sites using the latest AI, the time and effort for editing is zero!

For example, in the case of Ondoku, 1,000 characters of text can be read in just a few seconds.

You can get audio that requires no editing and is OK for commercial use at the exact moment you want it.

10 Recommended Text-to-Speech Software and Sites 【Free Available & Commercial Use OK】

So, specifically, what kind of text-to-speech software or site should you choose?

Including whether they can be used for free and whether commercial use is possible, we will introduce recommended text-to-speech software and sites!

1. Ondoku
2. A.I.VOICE
3. CeVIO
4. VOICEVOX
5. COEIROINK
6. TextTalk
7. Bouyomi-chan
8. AquesTalkPlayer
9. Speech Editor
10. CoeFont

1. Ondoku | Recommended Latest AI Reading Site that Can Be Used for Free (Commercial Use OK)

『Ondoku』 is a reading site recommended for those looking for a convenient text-to-speech method.

Since it is a reading site used from a browser, it can be used in any environment: PC (Windows, Mac, Linux), iPhone (iOS), Android smartphone, or tablet!

You can turn text into audio right now with no installation required.

Since it uses the latest AI to read text, you can synthesize high-quality, easy-to-hear audio as if a human were really reading it.

Of course, it can be used for free.

Commercial use is also OK!

16 Types of Japanese Reading Voices

With Ondoku, you can read Japanese text with 16 different voices.

It supports a wide range of scenes, from hobby video creation to business use.

You can also read aloud using multiple voices at the same time, so you can easily create conversation-style explanation videos!

Foreign Language Reading is Also Possible

While many free text-to-speech software and sites only support Japanese, Ondoku also supports foreign languages including English.

The number of supported languages is a total of 48 languages including Japanese and English!

You can easily increase video views by adding foreign language narration to your videos.

Commercial Use OK!

Ondoku is available for commercial use.

Commercial use is of course OK even when using it for free, so if you are looking for text-to-speech software or a site that can be used commercially for free, using Ondoku is recommended.

*Credit notation is not required for paid use. Click here for details on commercial use.

Read Up to 5,000 Characters for Free

Ondoku is a text-to-speech site that can be used for free.

• If not registered/logged in: 1,000 characters
• If registered and logged in: 5,000 characters

can be read aloud for free!

For those looking for free text-to-speech software or sites, Ondoku is recommended.

First, why not try using Ondoku from here?

2. A.I.VOICE / A.I.VOICE2 | Paid Reading Software with Popular Characters

A.I.VOICE is text-to-speech software using the speech synthesis "AITalk."

As of 2026, the A.I.VOICE2 series is primarily being developed.

It is software installed on a PC and is compatible with Windows and Mac.

It is paid software, sold in download and package formats.

The biggest feature of A.I.VOICE is that various attractive characters are available.

Beginning with characters like Kotonoha Akane/Aoi and Yuzuki Yukari, which were previously developed as "VOICEROID," a lineup of characters widely used on video sites like YouTube is available.

Each character's voice is created from the voices of the voice actors in charge.

Commercial use is also OK, but note that a corporate license agreement is required for business use by corporations.

Other Products Using AITalk are Recommended if Character Identity is Not Needed

When using it for business, strong character identity is often unnecessary.

In such cases, it is also recommended to choose products developed for corporations by AI Inc., the vendor of A.I.VOICE.

Since they sell products using the speech synthesis "AITalk" for various purposes such as narration and presentations, it can be smoothly introduced even for commercial business use.

3. CeVIO | Paid Reading Software Using a Proprietary AI Engine

CeVIO is text-to-speech software that can turn text into audio with synthetic voice using AI.

It is software installed on a PC and is only compatible with Windows.

Like A.I.VOICE, characters are prepared for each voice, and characters such as Sato Sasara and Suzuki Tsudumi are widely used on video sites.

Each character's voice is created from the voices of the voice actors in charge.

The technology used for speech synthesis was developed by Techno-Speech, a venture company from the Nagoya Institute of Technology.

Using the latest AI, it is possible to read audio naturally and smoothly.

It is paid software, sold in download format.

For individual use, posting videos to video sites and using them on websites are available for commercial use free of charge.

Download sales of videos and music, as well as use in school classes, are also available for commercial use for free, but registration of use information is required.

Individual quotes are required for commercial use by corporations.

4. VOICEVOX | AI Reading Software with Character Voices like Zundamon

VOICEVOX is text-to-speech software that can turn text into audio using AI.

It is software installed on a PC and is compatible with Windows, Mac, and Linux.

Various characters are available, including characters famous on video sites such as Zundamon, Kasukabe Tsumugi, and Shikoku Metan.

The feature of VOICEVOX is that it can be used for free.

It is free for both commercial and non-commercial use, but in addition to the VOICEVOX terms of use, it is necessary to follow the terms of use for each character.

Note the Terms of Use for Each Character

For example, characters like Zundamon and Kasukabe Tsumugi require credit notation upon use.

Furthermore, if you want to use them commercially without credit notation, a usage fee of 400,000 yen (excluding tax) is set per character.

5. COEIROINK | AI Reading Software for Creative Activities

COEIROINK is text-to-speech software targeting creative uses such as personally produced videos and fan-made works.

It is an installed software for PC, compatible with Windows and Mac.

In addition to various official and recognized characters, there is also a function called "MYCOE" to share voices created by users, allowing reading using a wide variety of voices.

It is also recommended for those who want to create their own AI speech synthesis materials.

It can be used for free, but note that credit notation is mandatory.

Also, in addition to the COEIROINK terms of use, it is necessary to follow the terms of use for each character.

6. TextTalk | Simple Reading Software for Windows

TextTalk is simple reading software that can turn typed text into audio.

It is free software for Windows and can be downloaded and used for free.

Available speech synthesis engines are:

• OpenJtalk
• Windows standard speech synthesis engine

Since it is slightly older software with the last update in 2015, it is inferior in realism compared to the latest AI reading software and sites, but the simple and easy-to-understand interface is attractive.

*It uses the speech synthesis engine from the Windows 8 era, but as of 2026, it could operate on Windows 11.

This software is recommended when looking for simple reading software.

7. Bouyomi-chan | Reading Software that Synthesizes Yukkuri Voice (Commercial Use OK)

Bouyomi-chan is reading software using the speech synthesis engine "AquesTalk."

It can read aloud with the so-called "Yukkuri video" voice.

It is free software compatible with Windows and can be used for free.

Bouyomi-chan can also be used for commercial purposes.

While "AquesTalk" normally requires a dedicated license for commercial use, Bouyomi-chan uses an older version of "AquesTalk" that allows free commercial use, so it can be used for free even for commercial purposes.

Because of the unique monotone voice, it is not realistic, but it is indispensable for "Yukkuri videos" and "Yukkuri explanations."

Since operation is extremely lightweight, it is also recommended for uses where you don't want to put a load on the PC, such as game commentary.

8. AquesTalkPlayer | Official Reading Software for AquesTalk Speech Synthesis

AquesTalkPlayer is the official software for the speech synthesis "AquesTalk."

It is free software for Windows, and the software itself can be downloaded and used for free.

Being the official software, it has a rich variety of available voices, and the speech synthesis engines available are:

• AquesTalk1
• AquesTalk2
• AquesTalk10

You can read aloud with all the voices installed in each speech synthesis engine.

However, purchase of a license is required for commercial use.

It is recommended for those who want to bring out the full potential of AquesTalk beyond just Yukkuri voices.

9. Speech Editor

Speech Editor is reading software that supports Speech Synthesis Markup Language (SSML).

It is free software for Windows and can be used for free.

The last update was in 2020, but as of 2026, it operated on Windows 11.

When reading aloud with synthetic voice, there are times when you want to specify parts to read strongly or weakly, or insert a space between sentences.

SSML is a markup language for specifying how to read aloud in detail, but its use required specialized knowledge.

This Speech Editor is software for visually specifying SSML, making it easy to specify how to read.

It is recommended for those looking for free software that can specify reading details.

Related Articles on SSML

This article explains the SSML that can be used with Ondoku.

Please take a look.

10. CoeFont | AI Software That Can Read Aloud in Voices of Voice Actors and Celebrities

CoeFont is reading software that can generate natural audio from text using AI.

In addition to various voices such as voice actors, actors, and celebrities being available, it is also equipped with a function to create AI voices based on your own voice.

There is a free plan, but commercial use is not allowed.

Contracting for a Standard plan or Plus plan is required for commercial use.

They also perform a free service for those who may lose their voice due to illness or other reasons, where they record their voice in advance to create an AI voice.

Recommended Scenes Where You Can Utilize Reading Software and Reading Sites

AI reading software and reading sites can be utilized in a wide range of situations, from hobbies and business to private activities.

From here, we will introduce recommended scenes where reading software and reading sites are useful.

AI Reading Software and Sites are Recommended for Creating Narration for Video Production!

When making videos for YouTube or internal manuals, have you ever struggled with recording narration?

Recording your own voice is difficult, and requesting professional voice actors or narrators involves very high costs.

In such cases, reading sites and reading software are recommended!

Just by entering text, audio like that of a professional announcer is completed immediately.

Since cut editing for silent parts and misspoken parts of the audio becomes unnecessary, you can greatly reduce the effort of video editing.

From professional video creators to hobbyist YouTubers, we recommend utilizing the latest AI if you are making video audio.

The Latest AI is Also Recommended for Creating Announcements for Shops and Facilities!

There are many situations where announcements for customers are necessary, such as opening/closing guidance for stores or reminders within a facility.

But requesting professionals requires costs, and if staff record them, the voice tone cannot be unified.

What we recommend there are reading software and reading sites.

Since you can prepare necessary content as audio data immediately on a computer when needed, you can flexibly update announcements according to the situation, such as seasonal sale information or sudden changes in business hours.

Since latest AI sites can read in foreign languages such as English, Chinese, Korean, and Thai, you can also easily create reminder announcements for inbound tourists.

Turn Daily Commutes and Travel Time into a Place for Input

On crowded morning trains or buses, it can be difficult to even read on a smartphone.

By using reading software and reading sites, you can turn such travel time when "only your ears are free" into input time.

With AI, it is easy to turn books you want to read into audiobooks.

You can turn the time until you arrive at work or school into time for studying to improve yourself, or time for entertainment to relax your mind.

■ AI voice synthesis software "Ondoku"

"Ondoku" is an online text-to-speech tool that can be used with no initial costs.

• Supports approximately 50 languages, 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.