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

Evernote
OneNote
Notion
Todoist
Simplenote
Standard Notes
Joplin
Capture notes, share them with others, and access them from your computer, phone or tablet. Free with a Google account.

Which is more popular?
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 | google.com |
| Company | Startup from the United States · 2026 | Startup from the United States |
| 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...
No description of Google Keep yet.
What each product offers, as listed by its team.

Possible disadvantages
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
Google Keep is recommended for individuals who need a basic, user-friendly note-taking tool without excess features. It is particularly beneficial for users who are frequent users of other Google services, as it offers seamless integration. It's an ideal choice for students, professionals, or anyone needing to keep quick, organized notes and lists.
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Google Keep, Simple and Clean Note-taking App 2018
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No, Google is not discontinuing Google Keep. They ended support for the Google Keep Chrome app in early 2021 and encouraged users to migrate to the web version of Keep.
Google Keep has most of what you need in a note-taking app; to-do lists, audio notes, a web clipper, and images. In addition, you can archive notes to achieve a cleaner interface.
Google Keep Notes has long been a popular note-taking app for its simplicity and versatility. However, if you're looking for something different or need additional features, there are several free alternatives that...
When comparing ZIP Code API and Google Keep, you can also consider the following products.

Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
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Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Get the OneNote app for free on your tablet, phone, and computer, so you can capture your ideas and to-do lists in one place wherever you are. Or try OneNote with Office for free.
Compare OneNote to ZIP Code API or Google Keep:

The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
Compare PostalDataPI to ZIP Code API or Google Keep:

All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Compare Notion to ZIP Code API or Google Keep: