
Waitwhile
Qminder
Qwaiting
Queue-it
Skiplino
Wavetec QMS
Appointment + QueueManagement
QLESS offers queue management software solution.
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

Which is more popular?
Based on our record, QLESS 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 | qless.com | zip-codes.com |
| Company | — | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of QLESS yet.
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...
What each product offers, as listed by its team.

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

No analysis of QLESS yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
How QLess Works
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How often each product is chosen within a category, 0–100% relative to the other.

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

There's already an app that does this: https://qless.com/. Source: over 4 years ago
Tracking ZIP Code API since May 2026.
When comparing QLESS and ZIP Code API, you can also consider the following products.


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Qminder works the way it sounds: It helps a company mind its queues.
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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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