
Weavy
KREA
n8n.io
CloudGPU.app
ComfyUI
ComputeUnion
Dify.AI
Build AI agents and workflows locally. The open-source alternative that combines ComfyUI's generative controls with n8n's automation.

ZIP Code API
ZipCheckup
PostalCodes.info
Smarty
Geocode.xyz
Geoco.io
getAddress.io
Free Zip Code API - Free Postal Code Validation | Zipcodestack

Which is more popular?
Based on our record, Zipcodestack seems to be more popular. It has been mentioned 3 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | nodetool.ai | zipcodestack.com |
| Pricing | ||
| Platforms | — | |
| Company | Startup from Germany · 1 - 9 employees | — |
| Listed in |
In their own words, as submitted to SaaSHub.


NodeTool is an open‑source, visual AI workflow builder that lets you connect nodes for text, images, audio, video, data, and automation—then run them locally or on the cloud. Build multi‑step agents, RAG systems, and creative media pipelines without coding, inspect execution in real time, and...
No description of Zipcodestack yet.
What each product offers, as listed by its team.


Possible disadvantages
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.
Cassandra nodetool command to see how much data lives in each node
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How often each product is chosen within a category, 0–100% relative to the other.


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


Tracking NodeTool since Jan 2026.
Using the zipcodestack API in your Node.js application is straightforward. You’ll first need to sign up for a free API key (it only takes a minute). Once you have your API key, you can call the REST endpoints using any HTTP client. Below... - Source: dev.to / about 1 year ago
Zipcodestack - Free Zip Code API and Postal Code Validation. Ten thousand free requests/month. - Source: dev.to / almost 3 years ago
I have seen this request pop up quite a few times. I did a quick search for free APIs of zipcode lookups. This one, named "zipcodestack" (I'm not in any way tied to, endorsing, or promoting them) seemed like a pretty good resource with... Source: over 3 years ago
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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
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Explore millions of AI generated images and create collections of prompts. Featuring Stable Diffusion generations.
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Check water quality, product recalls, energy rebates, and safety alerts for any U.S. ZIP code. Free reports powered by EPA and government data.
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Free and open fair-code licensed node based Workflow Automation Tool. Easily automate tasks across different services.
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Postal code lookup API and downloadable country datasets for address validation, checkout, logistics and geocoding workflows.
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