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

Kahoot!
Mentimeter
Sli.do
AhaSlides
Blackboard Learn
Glisser
Canvas LMS
Audience response system that uses mobile phones, twitter, and the web. Responses are displayed in real-time on gorgeous charts in PowerPoint, Keynote, or web browser.

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 | polleverywhere.com |
| Pricing | — | |
| 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 Poll Everywhere 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
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How often each product is chosen within a category, 0–100% relative to the other.

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Popular as a polling solution, Poll Everywhere helps you add live audience interactions to slides, so that the speaker could deliver effective presentations. Being a web-based audience response system, the poll helps...
Poll Everywhere is a great presenter tool. But its interface feels clunky, and it’s tough to customize if you want to target specific participant groups. If these are the features you’re missing, SurveySparrow is one...
Make your presentations more engaging. Create a poll on the platform and add the Poll Everywhere widget to your presentation be it PowerPoint, Keynote or Google Slides.
When comparing ZIP Code API and Poll Everywhere, 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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Kahoot! makes it easy to create, play and share fun learning games in minutes—for any subject, in any language, on any device.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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a web-based polling tool for workshops, conferences & events
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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Slido is the ultimate Q&A and polling platform for live and virtual meetings and events. It offers interactive Q&A, live polls and insights about your audience.
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