
Raindrop.io
Diigo
Instapaper
Tagpacker
Papaly
wallabag
start.me
Pinboard is a personal archive for things you find online and don't want to forget.
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, Pinboard seems to be more popular. It has been mentioned 77 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 | pinboard.in | zip-codes.com |
| Pricing | — | |
| Company | Startup from the United States | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of Pinboard 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
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Pinboard Bookmarking Review - Part 1
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Pinboard and ZIP Code API. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.

I don’t think Pinboard’s added a feature in ten years. It certainly hasn’t added a feature useful to me in that space of time. A year or so ago I got some Twitter DMs from someone (not Cegłowski) indicating that a...
With this tool, you can organize your pile of links into a clean space. With an easy tag option, finding your bookmarks becomes easier with Pinboard.
While all the other bookmarking sites have died, pinboard.in remains and is a reliable and handy place to save all those links you love but are sure to otherwise forget.
We have no reviews of ZIP Code API yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.

Is https://pinboard.in still a thing? I used to be a subscriber but completely forgot about it. - Source: Hacker News / 2 days ago
Shout out to Pinboard for making bookmarking pages and adding notes incredibly easy. They have a bookmarklet that sits on my bookmarks toolbar and if I like a page/tweet/video etc I just hit the "Add pin", enter some tags and hit enter.... - Source: Hacker News / 8 months ago
I switched to using Pinboard [0] for all bookmarking and never looked back. The real unlocks were: - using the bookmarklet that pops open a small browser window with the page title, suggested tags - doing the same on my iphone - have a... - Source: Hacker News / 10 months ago
Tracking ZIP Code API since May 2026.
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Diigo is a powerful research tool and a knowledge-sharing community
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Instapaper is a simple tool to save web pages for reading later.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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