
IMDb
Trakt.tv
Simkl
JustWatch
Reelgood
Criticker
TV Time
Letterboxd is a social site for sharing your taste in film, now in public beta.
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, Letterboxd seems to be more popular. It has been mentioned 149 times since March 2021.
Website, pricing, platforms and company facts side by side.
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ZIP Code API
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| Website | letterboxd.com | zip-codes.com |
| Company | — | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of Letterboxd 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.

Overall verdict
Why this product is good
Recommended for
Overall verdict
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Recommended for
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External articles and on-site reviews we used to compare the two products.

Letterboxd: Letterboxd is a social media platform for movie lovers that allows users to rate and review films, create watchlists, and follow other users with similar tastes. Its recommendation algorithm is known for...
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Recommendations tracked on public social media and blogs since March 2021.

5. Best Submissions can display their [Letterboxd Accts] the following week. Source: almost 3 years ago
Letterboxd is a site/app for logging movies that you've watched. I had always wanted a way to show my most recently-watched movies on my personal website. Source: almost 3 years ago
On the social media site for film geeks that is Letterboxd, a sizeable amount of the community has an official, unofficial horrorthon each year called HoopTober, helmed by the benevolent Cinemonster. Source: about 3 years ago
Tracking ZIP Code API since May 2026.
When comparing Letterboxd and ZIP Code API, 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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Automatically track TV shows & movies you're watching.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Simkl is a TV, anime, and movie tracker that keeps a history of all the shows and movies you watch in one, central location. It’s a mobile app, a website, Google Chrome extension to keep track of everything you watch and integrates with many TV apps
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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