OpenSLR (catalog)

by Daniel Povey (JHU CLSP)

Open Speech and Language Resources — the index of 130+ free speech corpora.

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TL;DR

Best for discovering open speech corpora — every major academic dataset has a SLR-N ID. Pricing: free.

Category
Open source
License
—
Stars
—
Last push
—
Pricing
free
Platforms
Web

What it is

OpenSLR is the canonical index of 130+ free open speech + language datasets, hosted by Daniel Povey. LibriSpeech, MUSAN, RIRS-Noises, AISHELL, TED-LIUM, MLS, and dozens of low-resource corpora live here under SLR-N IDs.

Best for: Discovering open speech corpora — every major academic dataset has a SLR-N ID.
Watch out for: Per-resource licenses (CC BY, Apache-2.0, custom) — check each SLR-N page. Hosted as a free convenience catalog by Daniel Povey.

Install / use

Go to OpenSLR (catalog) www.openslr.org

Features

Speaker diarizationNo
Word-level timestampsNo
Streaming / real-timeNo
Languages supported70
HIPAA eligibleNo

OpenSLR (catalog) vs Whipscribe

FeatureOpenSLR (catalog)Whipscribe
CategoryOpen sourceTranscription APIs
Pricingfree$4–$24 one-time packs (credits never expire) · $2 single unlock · 60 min free on signup
Speaker diarizationNoYes
Word timestampsNoYes
StreamingNoNo
Languages7099
PlatformsWebWeb, API, MCP

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