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

WinDirStat
WizTree
Baobab Disk Usage Analyzer
DaisyDisk
CleanMyPC
Avast Cleanup
SpaceSniffer
TreeSize tells you where precious disk space has gone to.

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 | jam-software.de |
| 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 TreeSize 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
TreeSize is recommended for system administrators, IT professionals, and everyday users who need an efficient way to track and manage disk space usage. It is particularly useful for those managing multiple drives or looking to perform detailed storage audits.
Walkthroughs and reviews on video.
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How to Easily Free Disk Space with Treesize (or similar)
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using ZIP Code API and TreeSize. 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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TreeSize Professional is a flexible hard disk space managing tool for all Windows and client/server. You can visualize your hard disk space usage.
When comparing ZIP Code API and TreeSize, you can also consider the following products.

Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
Compare Smarty to ZIP Code API or TreeSize:

WinDirStat is a disk usage statistics viewer and cleanup tool, inspired by KDirStat.
Compare WinDirStat to ZIP Code API or TreeSize:

Free Zip Code API - Free Postal Code Validation | Zipcodestack
Compare Zipcodestack to ZIP Code API or TreeSize:

WizTree quickly finds the files and folders using the most space on your hard drive. It scans the MFT (Master File Table) instead of crawling the entire disk which makes it very fast.
Compare WizTree to ZIP Code API or TreeSize:

The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
Compare PostalDataPI to ZIP Code API or TreeSize:

Baobab Disk Usage Analyzer is one of the light-weight disk analyzers that offers you a chance to view and monitor the disk usage & folder structure without any hassle.
Compare Baobab Disk Usage Analyzer to ZIP Code API or TreeSize: