head to head · open source
espectre vs sanoTTS
espectre has 9,819 GitHub stars, 742 forks, 13 open issues and last shipped 3 days ago. sanoTTS has 843 stars, 88 forks, 9 open issues and last shipped yesterday. espectre leads on adoption by 1,065% (9,819 vs 843 stars). espectre is written in Python under GPL-3.0; sanoTTS is written in C under GPL-3.0. espectre has attracted 8% as many forks as stars, sanoTTS 10%. sanoTTS was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (home-assistant), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| espectre | sanoTTS | |
|---|---|---|
| GitHub stars | ★ 9.8K | ★ 843 |
| License | GPL-3.0 | GPL-3.0 |
| Written in | Python | C |
| Last push | 2026-11-12 | 2026-11-14 |
| Forks | ⑂ 742 | ⑂ 88 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick espectre if
- You weight community size — 9.8K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick sanoTTS if
- You want the sanoTTS feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches C
- You evaluated both and sanoTTS fits your workflow better
About espectre
ESPectre Turn an ESP32 into a private, local Wi Fi motion sensor. When someone moves through a room, they change the way Wi Fi signals travel through it. ESPectre reads those changes and reports motion in real time. No camera, no microphone, no wearable, and no dedicated radar hardware: just a supported ESP32 and the Wi Fi network already in the room. ESPectre is an open source platform that brings together ready to flash firmware, an embeddable C++ SDK, a MicroPython implementation, browser tools, a host CLI, an open dataset, open model weights, and the research workflow used to build and validate the…
read the full espectre overview →
About sanoTTS
sanoTTS — a tiny neural voice that runs anywhere sano (सानो) — Nepali for "small." A family of tiny neural text to speech voices — 294k to 2.3M parameters — that run with no cloud and no NPU : real time on a $3 ESP32 S3 (out a GPIO into an LM386 and a speaker), or live in the browser via WASM. smallest neural TTS family known — 294k to 2.3M parameters runs real time on a $3 microcontroller — measured RTF 0.383 on an ESP32 S3 , 2.6x faster than real time, with the Xtensa LX7 SIMD kernels the Arduino library assembles by default (BOARDS.md, 2026 09 04). Scalar C on the same board is 1.58, i.e. slower than real…
read the full sanoTTS overview →
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Frequently asked questions
Is espectre or sanoTTS more popular?
espectre has 9,819 GitHub stars and sanoTTS has 843. espectre has the larger community by that measure.
Are espectre and sanoTTS free?
Both are open source. espectre is licensed under GPL-3.0 and sanoTTS under GPL-3.0. Neither carries a licence fee.
What is the difference between espectre and sanoTTS?
espectre is written in Python and sanoTTS in C. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, espectre or sanoTTS?
Choose espectre if you want the larger community (9,819 stars) or its GPL-3.0 licence terms. Choose sanoTTS if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.