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

Doodle
When2Meet
Rallly
Crab Fit
Calendly
Framadate
Xoyondo
The easiest way to schedule group meetings.

Which is more popular?
Based on our record, LettuceMeet seems to be more popular. It has been mentioned 11 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 | lettucemeet.com |
| 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...
No description of LettuceMeet 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
No analysis of LettuceMeet 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 LettuceMeet. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.

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8LettuceMeetView ProductSoheil KoushanCo-founder, LettuceMeet · Edited 9mo agoSoheil Koushan made this productInstead of going through the hassle of preselecting time blocks, LettuceMeet lets everyone add their...
Recommendations tracked on public social media and blogs since March 2021.

Tracking ZIP Code API since May 2026.
I've looked around for something like this also, and I found https://lettucemeet.com which I often use for this. It doesn't require signing in, and it allows adding what times you are available. It's a bit unintuitive in where the... - Source: Hacker News / almost 3 years ago
I really like LettuceMeet for that for our DnD group: https://lettucemeet.com/. - Source: Hacker News / almost 4 years ago
I wanted to dig up this other one my friends use for watch party planning... it's called https://lettucemeet.com/ and it's more like you create individual one-off invites for people to log their possible availability for a single event,... Source: about 4 years ago
When comparing ZIP Code API and LettuceMeet, 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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Make meetings happen. With Doodle, scheduling becomes quick and easy.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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When2meet helps you find the best time for a group to get together. It is a free survey tool that is quick and easy to use.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
Compare PostalDataPI to ZIP Code API or LettuceMeet:

Find the best time to meet. Coordinate group meetings without the back-and-forth emails.
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