Datasets | Mozilla Data Collective

All Datasets

Compensated Datasets

API

Contribute Datasets

Loading datasets...

Terms

FAQs

Participation Guidelines

Responsible Disclosure

News and Documentation

Data and Model Competitions

[email protected]

Terms

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

All Datasets

Filtered by

Search results for “english”

151 Datasets

MDC Curators

CoVoST 2 Turkish - English

The dataset includes audio files in Turkish and their translations in English.

License: CC-BY-NC-4.0

Locale: tr, en

Task: MT

Format: MP3, TSV

Size: 207.40 MB

MDC Curators

CoVoST 2 Catalan - English

The dataset includes audio files in Catalan and their translations in English.

License: CC-BY-NC-4.0

Locale: ca, en

Task: MT

Format: MP3, TSV

Size: 4.50 GB

MDC Curators

CoVoST 2 English - Latvian

The dataset includes audio files in English and their translations in Latvian.

License: CC-BY-NC-4.0

Locale: en, lv

Task: MT

Format: MP3, TSV

Size: 12.56 GB

Center za jezikovne vire in tehnologije Univerze v Ljubljani

SI-NLI

SI-NLI (Slovene Natural Language Inference Dataset) contains 5,937 human-created Slovene sentence pairs (premise and hypothesis) that are manually labeled with the labels "entailment", "contradiction", and "neutral". We created the dataset using sentences that appear in the Slovenian reference corpus ccKres (http://hdl.handle.net/11356/1034). Annotators were tasked to modify the hypothesis in a candidate pair in a way that reflects one of the labels. The dataset is balanced since the annotators created three modifications (entailment, contradiction, neutral) for each candidate sentence pair. The dataset is split into train, validation, and test sets, with sizes of 4,392, 547, and 998. We used Slovenian pre-trained language models to create splits, thereby ensuring that difficult and easy instances are evenly distributed in all three subsets. The dataset is released in a tabular TSV format. The README.txt file contains a description of the attributes. Only the hypothesis and premise are given in the test set (i.e. no annotations) since SI-NLI is integrated into the Slovene evaluation framework SloBENCH (https://slobench.cjvt.si/). If you use the dataset to train your models, please consider submitting the test set predictions to SloBENCH to get the evaluation score and see how it compares to others.

License: CC-BY-NC-SA-4.0

Locale: sl

Task: NLU

Format: TSV

Size: 392.44 KB

MDC Curators

CoVoST 2 English - Welsh

The dataset includes audio files in English and their translations in Welsh.

License: CC-BY-NC-4.0

Locale: en, cy

Task: MT

Format: MP3, TSV

Size: 12.56 GB

RFE/RL

RFE/RL Romanian (Moldova) News Text Corpus

Longitudinal Romanian, Russian & English news corpus from Europa Liberă Moldova (2002-2026) with over 244,000 articles and 63M tokens.

License: CC-BY-NC-SA-4.0

Locale: ro,ru,en

Task: NLP

Format: TXT

Size: 311.87 MB

Weekly dataset digest

Receive a brief weekly digest of new datasets similar to the ones you’ve downloaded.

Yes, notify me

RFE/RL

RFE/RL Kyrgyz News Text Corpus

Longitudinal Kyrgyz, Russian & English news corpus from Radio Azattyk (2002-2026) with over 352,000 articles and 79M tokens.

License: CC-BY-NC-SA-4.0

Locale: ky,ru,en

Task: NLP

Format: TXT

Size: 282.41 MB

Open Home Foundation

Kathleen 1.0

Text to speech dataset for English, female speaker, approximately 1 hour of read speech.

License: CC0-1.0

Locale: en-US

Task: TTS

Format: FLAC

Size: 211.96 MB

Institute of African Digital Humanities

Naija-TTS-Dataset

This dataset consists of Nigerian Pidgin English (Naija) audio clips paired with text, designed for TTS applications.

License: NOODL-1.0

Locale: pcm

Task: TTS

Format: MP3, TSV

Size: 324.82 MB

RFE/RL

RFE/RL Armenian News Text Corpus

Longitudinal Armenian & English news corpus from Radio Azatutyun (1999-2026) with over 232,000 articles and 54M tokens.

License: CC-BY-NC-SA-4.0

Locale: hy,en

Task: NLP

Format: TXT

Size: 183.19 MB

Community

Ukrainian–Russian–Surzhyk Read Speech

3,117 read-speech recordings containing Ukrainian, Russian, and Surzhyk, with transcripts and anonymous speaker IDs

License: SURZHYK-TERMS-0.1.0

Locale: uk, ru

Task: ASR

Format: WAV, TSV, MD

Size: 240.92 MB

MDC Curators

CoVoST 2 English - Arabic

The dataset includes audio files in English and their translations in Arabic.

License: CC-BY-NC-4.0

Locale: en, ar

Task: MT

Format: MP3, TSV

Size: 12.56 GB

EELLAK - GreekFOSS

Modern Greek Dictionary

This dataset is a structured digital export of the Triantafyllides Modern Greek Dictionary.

License: CC BY-NC-ND 4.0

Locale: gr-GR

Task: NLP

Format: PARQUET

Size: 12.02 MB

MDC Curators

CoVoST 2 Indonesian - English

The dataset includes audio files in Indonesian and their translations in English.

License: CC-BY-NC-4.0

Locale: id, en

Task: MT

Format: MP3, TSV

Size: 79.77 MB

MDC Curators

CoVoST 2 Italian - English

The dataset includes audio files in Italian and their translations in English.

License: CC-BY-NC-4.0

Locale: it, en

Task: MT

Format: MP3, TSV

Size: 1.93 GB

Balochistan Educational and Cultural Organization

Brahui Research Work Corpus

This corpus consists of research works, academic theses, and scholarly papers, comprising approximately 185,000 tokens. It covers a range of academic topics and formal registers, reflecting standardized writing practices and disciplinary conventions. The corpus is intended to support linguistic analysis, discourse studies, and computational research on academic and research-oriented text.

License: CC-BY-NC-SA-4.0

Locale: brh

Task: NLP

Format: TXT

Size: 1.13 MB

MDC Curators

CoVoST 2 Chinese (China) - English

The dataset includes audio files in Chinese (China) and their translations in English.

License: CC-BY-NC-4.0

Locale: zh-CN, en

Task: MT

Format: MP3, TSV

Size: 713.86 MB

Community

Pemalang Dialect of JAV-IND-ENG-ARB Parallel Corpus

The languages represented in the corpus include Javanese (Pemalang dialect), Indonesian, English, and Arabic.

License: CC-BY-SA-4.0

Locale: ind,jav,eng,arb

Task: MT

Format: TSV

Size: 555.62 KB

MDC Curators

CoVoST 2 Persian - English

The dataset includes audio files in Persian and their translations in English.

License: CC-BY-NC-4.0

Locale: fa, en

Task: MT

Format: MP3, TSV

Size: 1.52 GB

MirasAI

Associated Press Pakistan 16.9 Million Balochi Corpus

A 16.9M-word Balochi news corpus from Associated Press of Pakistan, covering 59,172 articles published between 2016 and 2026.

License: CC-BY-NC-SA-4.0

Locale: bal

Task: NLP

Format: TXT

Size: 22.85 MB

MDC Curators

CoVoST 2 German-English

The dataset includes 154856 audio files in German and their translations in English.

License: CC-BY-NC-4.0

Locale: de, en

Task: MT

Format: MP3, TSV

Size: 5.90 GB

Mozilla Common Voice

Common Voice Scripted Speech 27.0 - Cantonese

A collection of read speech recordings in Cantonese.

License: CC0-1.0

Locale: yue

Task: ASR

Format: MP3

Size: 5.99 GB

MDC Curators

CoVoST 2 Spanish - English

The dataset includes audio files in Spanish and their translations in English.

License: CC-BY-NC-4.0

Locale: es, en

Task: MT

Format: MP3, TSV

Size: 4.12 GB

Community

Indonesian-Spanish Learner Corpus

A corpus of Spanish read speech by Indonesian learners.

License: CC-BY-NC-SA-4.0

Locale: es

Task: CALL

Format: WAV, WEBM, TSV

Size: 1.06 GB