Smarty
Zipcodestack
PostalDataPI
Geoco.io
Melissa Data Quality
Loqate
usZIPCodes.org
REST API for US ZIP, ZIP+4, and Canadian postal codes. Single unified endpoint covers address validation and standardization, radius search (centroid haversine and true spatial polygon intersection), point-to-point distance, autocomplete/typeah

NoahsArch.tech
Text2SQL.AI
ChatGPT
Txt2SQL
EXASOL
AI2sql
OceanBase
TTSQL turns text to SQL, natural language to SQL, and text to query prompts into secure SQL across major databases.

Which is more popular?
Website, pricing, platforms and company facts side by side.
|
ZIP
ZIP Code API
|
|
|
|---|---|---|
| Website | zip-codes.com | ttsql.com |
| Pricing | — | |
| Company | Startup from the United States · 2026 | Startup from the United States · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

API for US ZIP, ZIP+4, and Canadian postal code data. One unified endpoint set covers North America — no separate APIs by country or data type. What it does Address validation and standardization — production-grade parser with ZIP+4 append, refreshed monthly Radius search — centroid haversine and...
Convert text to sql query, integrate text to sql API into your SaaS and let users describe what they want, instead of exhausting searching, for example: "Show me blog post I created 2 years ago".
What each product offers, as listed by its team.

An editorial look at what each product does well and who it suits.

Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.

As answered by people managing ZIP Code API and TTSQL.
TTSQL's answer:
It is fastest Text to SQL service with both dashboard and API
TTSQL's answer:
Its cheapest and provides highest free quota
TTSQL's answer:
Developers who willing to integrate advanced search via natural language.
TTSQL's answer:
There was a lack of text to SQL service on the market
TTSQL's answer:
VueJS, NodeJS, PostgreSQL
TTSQL's answer:
Share your experience with using ZIP Code API and TTSQL. For example, how are they different and which one is better?
When comparing ZIP Code API and TTSQL, you can also consider the following products.

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Ask your databases anything, in Arabic or English — on-premise, so no data ever leaves your servers.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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ChatGPT is a powerful, open-source language model.
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