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FAQs

Participation Guidelines

Responsible Disclosure

News and Documentation

Data and Model Competitions

[email protected]

Mozilla Data Collective is a mission-locked British company, incubated by Mozilla Foundation, and backed by the not-for-profit Mozilla.org

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199 Datasets

MirasAI

Rohingya Literature Corpus

A rare 613.5 K token Rohingya corpus written in the Myanmar script, featuring cultural articles and folklore for advanced NLP research and preservation.

License: CC-BY-NC-4.0

Locale: rhg

Task: NLP

Format: TXT, DOCX

Size: 7.01 MB

Mozilla Common Voice

Common Voice Scripted Speech 27.0 - Kinyarwanda

A collection of read speech recordings in Kinyarwanda.

License: CC0-1.0

Locale: rw

Task: ASR

Format: MP3

Size: 57.18 GB

CLEAR Global

Marma Text Corpus

Marma language sentences with original and normalized text forms, supporting language technology development for this Tibeto-Burman language.

License: CC-BY-NC-SA-4.0

Locale: rmz

Task: LM

Format: TSV

Size: 188.92 KB

Mozilla Common Voice

Common Voice Scripted Speech 27.0 - Chinese (Hong Kong)

A collection of read speech recordings in Chinese (Hong Kong).

License: CC0-1.0

Locale: zh-HK

Task: ASR

Format: MP3

Size: 3.43 GB

MirasAI

Sylheti Text Corpus by Haque Publishers

A 524K token Sylheti corpus featuring drama scripts and cultural texts in UTF-8 format for linguistic research and NLP development.

License: CC-BY-NC-4.0

Locale: syl

Task: NLP

Format: TXT

Size: 3.53 MB

Mozilla Common Voice

Common Voice Scripted Speech 27.0 - Tunen

A collection of read speech recordings in Tunen.

License: CC0-1.0

Locale: tvu

Task: ASR

Format: MP3

Size: 195.43 MB

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CLEAR Global

Synthetic Text Corpus for African Language ASR

LLM-generated synthetic text in 10 African languages with human linguistic quality evaluations

License: CC-BY-NC-4.0

Locale: bm,ny,ha,kr,luo

Task: NLP

Format: TSV

Size: 746.63 KB

Mozilla Common Voice

Common Voice Scripted Speech 27.0 - Chinese (Taiwan)

A collection of read speech recordings in Chinese (Taiwan).

License: CC0-1.0

Locale: zh-TW

Task: ASR

Format: MP3

Size: 2.96 GB

MirasAI

India Traffic Signs Dataset

An Indian traffic signs image dataset featuring multilingual signs across diverse real-world conditions for classification and detection tasks.

License: CC-BY-ND-4.0

Locale: NA

Task: CV

Format: JPEG, JSON

Size: 190.44 MB

Mozilla Common Voice

Common Voice Spontaneous Speech 5.0 - Amba

A collection of spontaneous responses to questions in Amba.

License: CC0-1.0

Locale: rwm

Task: ASR

Format: MP3

Size: 266.28 MB

MirasAI

Bangladesh Traffic Signs Dataset

A Bangladesh traffic sign image dataset featuring signs in Bengali language across diverse real-world conditions for classification and detection tasks.

License: CC-BY-NC-4.0

Locale: ben, eng

Task: CV

Format: JSON, JPEG

Size: 1.35 GB

Mozilla Common Voice

Common Voice Scripted Speech 27.0 - Votic

A collection of read speech recordings in Votic.

License: CC0-1.0

Locale: vot

Task: ASR

Format: MP3

Size: 7.81 MB

CLEAR Global

TWB Voice 1.0 - Shuwa Arabic

Read speech corpus of 15 hours of Shuwa Arabic audio with transcriptions, collected by CLEAR Global for ASR development.

License: CC-BY-NC-4.0

Locale: shu, ar

Task: ASR

Format: WAV, TSV

Size: 3.17 GB

Mozilla Common Voice

Common Voice Spontaneous Speech 5.0 - Tudaga

A collection of spontaneous responses to questions in Tudaga.

License: CC0-1.0

Locale: tuq

Task: ASR

Format: MP3

Size: 13.61 MB

Anjuman e Katib

Anjuman-e-Katib Farsi/Persian Literature Corpus

This corpus is a collection of more than one million tokens of Farsi/Persian language. The corpus contains work of literature including novels, fictional and non-fictional, poems and many more. the data is shared with the approval of the authors and aims to support linguistic research, language technology development and its preservation.

License: CC-BY-NC-4.0

Locale: fas

Task: NLP

Format: TXT

Size: 2.82 MB

Prompsit Language Engineering

Prompsit D1 - Inline Asset Integrity

Checks whether machine translation keeps tags, placeholders and protected text intact.

License: CC-BY-4.0

Locale: mul

Task: MT

Format: JSONL

Size: 215.42 KB

Chishti Sons

Chishti Sons Punjabi Literature Corpus

This corpus is a collection of more than one million tokens of Western Punjabi language. The data was produced under the Chishti Sons publishing agency. The corpus contains work of literature including short stories, stories, fiction, non-fiction, and other literary books. The data is being shared with the approval of the authors. It aims to support linguistic research, language technology development, and cultural preservation.

License: CC-BY-NC-4.0

Locale: pnb

Task: NLP

Format: TXT

Size: 1.65 MB

Mozilla Common Voice

Common Voice Spontaneous Speech 5.0 - Adyghe

A collection of spontaneous responses to questions in Adyghe.

License: CC0-1.0

Locale: ady

Task: ASR

Format: MP3

Size: 109.99 MB

Kaleem Art Press

Kaleem Art Press Urdu Literature Corpus

This corpus is a collection of 1.44 million tokens of Urdu language . The data was produced under the Kaleem Art Press over the last fifteen years . The corpus contains work of literature including Stories, Short Stories, Novels, fiction, non-fiction, Travelogues, Poetry, Biography, and History. The data is being shared with the approval of the authors. It aims to support linguistic research, language technology development, and cultural preservation.

License: CC-BY-NC-4.0

Locale: ur

Task: OTH

Format: TXT

Size: 2.85 MB

Mozilla Common Voice

Common Voice Scripted Speech 27.0 - Lao

A collection of read speech recordings in Lao.

License: CC0-1.0

Locale: lo

Task: ASR

Format: MP3

Size: 8.93 MB

Rana Printers Multan

Rana Printers Urdu Literature Corpus

This corpus comprises 1.68 million tokens of high-quality Urdu text collected over the past decade through Rana Printers. It includes a diverse range of literary genres such as stories, short stories, novels, fiction, non-fiction, poetry, and historical works. All content is shared with the authors’ approval. The dataset is intended to support linguistic research, Urdu language technology development, and the preservation of literary and cultural heritage.

License: CC-BY-NC-4.0

Locale: ur

Task: OTH

Format: TXT

Size: 3.00 MB

Mozilla Common Voice

Common Voice Scripted Speech 27.0 - Bankon

A collection of read speech recordings in Bankon.

License: CC0-1.0

Locale: abb

Task: ASR

Format: MP3

Size: 227.18 MB

Balochi Academy

Eastern Balochi Literature Corpus

A UTF-8 normalized Eastern Balochi literature corpus (~1.9M tokens) covering poetry, folklore, novels, and cultural texts for linguistic research and NLP.

License: CC-BY-NC-4.0

Locale: bgp

Task: NLP

Format: TXT

Size: 949.67 KB

Mozilla Common Voice

Common Voice Scripted Speech 27.0 - Kom

A collection of read speech recordings in Kom.

License: CC0-1.0

Locale: bkm

Task: ASR

Format: MP3

Size: 237.37 MB