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Flite

Free#209 of 222 in Text-to-Speech Software

Flite: A lightweight open TTS engine for developers who need C APIs and embedded deployment. Ranked #209 of 222 in Text-to-Speech Software by our editors (3.0/10); pricing: Open source; best for embedded developers needing lightweight open TTS.

3.0/10Editor score

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At a glance

Editor score
3.0 / 10
Pricing
Open source
Best for
Embedded developers needing lightweight open TTS
Paid from
Free
Commercial use
Yes
Facts checked
20 Sep 2026

Where it wins
- Public C library API supports application integration
- Runs across desktop, mobile, server, and embedded environments
- Supports SSML, external .flitevox voices, and multilingual voice systems
Where it doesn't
- WAV is the listed export format
- No AI features or voice-cloning capabilities
- Focused feature set may not suit broad commercial TTS workflows

Our verdict on Flite

Flite is a small, fast, portable text-to-speech engine written in ANSI C. It converts text, files, phones, and SSML into speech through command-line tools or a public C library API. Its deployment scope includes Windows, macOS, Linux, Android, and self-hosted environments, with a focus on embedded devices, mobile platforms, desktop systems, and servers. It is best suited to developers who want an open-source engine they can integrate into software rather than a hosted voice platform.

Flite uses an open-source pricing model, so there are no paid tiers to compare. Commercial use is permitted under the project's stated license conditions. The published capabilities support text and file synthesis, SSML text and file synthesis, voice selection, and external .flitevox voice loading. Voices can also be compiled into an application. After initialization, the runtime is thread-safe, which fits applications that need concurrent speech generation. Output is provided as WAV waveform files, giving developers a defined export path for supported deployments.

Its strongest distinction is the combination of a public C API, portable ANSI C implementation, and embedded- or server-oriented deployment model. English and Indic voices are included, while grapheme-based voice systems provide additional multilingual support. That focus keeps Flite practical for lightweight, self-hosted integration, but its scope is narrower than products built around AI voice features, voice cloning, or multiple output formats. Choose Flite when control, portability, open-source access, and C integration matter most. Choose an alternative when you need voice cloning, AI-driven capabilities, or export beyond WAV.

Your product? Our editors can test Flite in depth and publish a review, labelled as paid · from $149/mo →

Flite pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on github.com

Flite fact sheet

Free plan	Not verified
Paid from	Free
Commercial use	Yes
Voice cloning	Not verified
API access	Yes
Languages	Not verified
Maximum input	Not verified
Export formats	WAV
Platforms	windows, macos, linux, android, self_hosted
Deployment	Self-hosted, Mobile
Platforms	Windows, macOS, Linux, Android
Support	Docs
Built for	Small business, Mid-market, Enterprise (editorial estimate)
Pricing	Open source
Website	github.com
Facts checked	20 Sep 2026

Alternatives to Flite

See all Flite alternatives →

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Featured on iTechGuides

Flite is listed in our Text-to-Speech Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated 7 Oct 2026 · How we research and update