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

Bubble.io
Lovable
Airtable
Glide
Webflow
Retool
Carrd
The AI app builder for business operations
Which is more popular?
Based on our record, Softr seems to be more popular. It has been mentioned 37 times since March 2021.
Website, pricing, platforms and company facts side by side.
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ZIP
ZIP Code API
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|
|---|---|---|
| Website | zip-codes.com | softr.io |
| Pricing | — | |
| Company | Startup from the United States · 2026 | Startup from Germany · 50 - 99 employees · 2019 |
| 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...
Softr is the AI app builder for business operations. Build secure internal tools and portals with databases, workflow automation, and integrations included. Access control and granular permissions are built in, so non-technical teams can launch, maintain, and change their own tools without...
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
Walkthroughs and reviews on video.
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Build Business Apps with AI - That Actually Work | Softr
How often each product is chosen within a category, 0–100% relative to the other.

As answered by people managing ZIP Code API and Softr.
Softr's answer:
We launched Softr with a single vision: to give 1 billion business users the ability to build the tools they need — without relying on developers, without learning to code.
Softr is now powering over 1 million builders worldwide - including companies like Netflix, Google, Stripe, UPS, and Clay, who build and run the systems that power their business operations.
We’re a fully remote, distributed, and diverse team of curious, ambitious, and driven individuals.
Softr's answer:
Many app builders or out-of-the-box tools are either too rigid, too expensive, or fall apart the moment real users and real data are involved. Softr is different because it's built for actual business use from day one.
Describe what you need, and the AI Co-Builder generates a fully functional app — database, logic, and UI already connected. No generated code to debug, no developer needed to make it production-ready.
From there, you stay in control: customize through prompting or visual editing, manage data in Softr Databases or connect to existing tools, set up granular permissions, and connect to Softr MCP. As your business grows, your portal grows with it — without starting over or calling in a developer.
Softr's answer:
Over 1 million teams use Softr to build and run business operations apps: - Netflix - Google - Stripe - UPS - MIT - Clay - Celonis - Make
Softr's answer:
Unlike pure vibe coding platforms, Softr puts a clear boundary around what AI can generate. Business teams can customize the UI, without asking an LLM to generate or manage the security model, backend, credentials, or infrastructure.
Share your experience with using ZIP Code API and Softr. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.

We have no reviews of ZIP Code API yet. Be the first one to post
Softr focuses on a narrower job and does it well: client portals, internal tools and directories built on top of data you already have, including Airtable, Google Sheets or its own database. If what you really want is...
By streamlining the traditionally time-consuming and costly website development process, Softr is championing the rise of no-code web development and unlocking limitless possibilities for individuals and businesses...
Recommendations tracked on public social media and blogs since March 2021.

Tracking ZIP Code API since May 2026.
Web Apps: - Start with Glideapps.com or softr.io - if you get comfortable and still like to build web apps learn bubble.io or weweb.io or flutterflow.com. Source: almost 3 years ago
Hey, My recommendation: - If you don't have previous knowledge start with one of the tools with a lower learning curve glideapps.com or softr.io - If you build a few apps with those, then I would start to learn one of the tools with a... Source: almost 3 years ago
You should try softr.io They have an amazing free plan. Source: almost 3 years ago
When comparing ZIP Code API and Softr, you can also consider the following products.

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Building tech is slow and expensive. Bubble is the most powerful no-code platform for creating digital products.
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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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Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
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