Decidim
Polis
True Causes is a tool for group root-cause analysis at scale: participants independently propose and link causes, building one shared causal map whose high-leverage roots identify what to act on. It digitizes and scales Structured Democratic Dialogue

Postio.co.uk
Ideal postcodes
Fetchify
Smarty
Data8 UK
ZIP Code API
Data8 UK PredictiveAddress
The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.

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TC
True Causes
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| Website | truecauses.org | postaldatapi.com |
| Pricing | ||
| Company | — | Startup from the United States · 1 - 9 employees · 2026 |
| Listed in |
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PostalDataPI is a global postal code validation and enrichment API covering 240+ countries and territories. One API, one key, one flat rate — $0.000028 per query with no tiers or subscriptions. What you get back: Up to 18 metadata fields per postal code — city, state/region, coordinates,...
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PostalDataPI Now Returns 18 Fields Per Postal Code — for 240+ Countries
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Fast UK address, email & phone validation APIs for developers. Official Royal Mail PAF data. Pay as you go, 100 free lookups.
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We help businesses improve UX and data quality with a cutting edge address validation service.
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