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

ExamBuilder
Visual CertExam Suite
EasyTestMaker
Testpress
Cloud Assess
G1 Test Simulator
Nexam
Examonline is a complete online exam management software system
Which is more popular?
Based on our record, ExamOnline.in seems to be more popular. It has been mentioned 1 time 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 | examonline.in |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from the United States · 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...
🔸Examonline is a complete online exam management software system. From registrations to generating consolidated reports/results, examonline has covered it all. It is a cloud based application embedded with AI techniques for a fair, and transparent remote examination. 🔸The AI engine is used in...
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
No analysis of ExamOnline.in yet.
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using ZIP Code API and ExamOnline.in. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Tracking ZIP Code API since May 2026.
I have an exam tomorrow (South East Asian Math Olympiad) that is being proctored using https://examonline.in. Source: about 4 years ago
When comparing ZIP Code API and ExamOnline.in, 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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ExamBuilder provides online testing in the cloud with a strong focus on reporting. Sign up for a 30 day free trial
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Visual CertExam Suite is a web-based test preparation software solution presented by Avanset that offers you various customizable formats to make the papers, tests, quizzes, and exams quickly.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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EasyTestMaker is an online test generator to help you create and manage your tests!
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