World Atlas of Language Structures

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Structural language properties in a comparative database

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SI Score: 75/100
Pricing: Not confirmed
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linguistics language-typology comparative-reference

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Answers use saved listing facts and recorded sources.

What it does

WALS compiles phonological, grammatical and lexical language properties from descriptive sources.

Choose a structural feature when comparing languages rather than beginning with a general language description. The project asks citations to identify the relevant chapter and released data version, which matters when corrected data changes a comparison. Keep the feature and source context together.

Feature pages provide citation and export options; JavaScript is required for the interface.

Sources

WALS Online - Home (Oct 26, 2026)

SI Score

75/100

#1 in Reference

Based on published information. No hands-on task test.

Method 2.0 · Published source review Assessed Oct 26, 2026Score ceiling for this evidence: 84/100.

Product usefulness 75

Evidence

Language-feature comparison connects to chapter/version citations and exports, providing controlled linguistic-data outputs.

Limits: AI review of saved source passages. No hands-on test, human approval or automatic-provider checker receipt.

Source links and check dates are in Sources and checks below.

Separate website checks

These checks do not add points to the SI Score. They inspect the website's HTML, not the product in use.

Basic website checksunknown

No check recorded.

HTML accessibility checksunknown

No check recorded.

Homepage HTML responseunknown

No check recorded.

Trackers in homepage HTMLunknown

No check recorded.

Page date hintsunknown

No check recorded.

Policy links do not verify a company's conduct. An HTML response time is not application speed. Tracker and accessibility checks miss behavior after page load. Copyright dates do not prove product upkeep.

How the SI Score works →

Unconfirmed details may be unassessed, absent from the pages checked or temporarily unreadable. A missing price does not mean the service is free.

Sources and checks

Supporting pages for product usefulness, site facts, prices and separate website checks. Each record keeps its own date. Reading a page does not establish how well the product performs in use.

wals.info/
- Product usefulness evidenceChecked Oct 26, 2026

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