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Notesnook
Trilium Notes is a hierarchical note taking application.
Smarty
Zipcodestack
PostalDataPI
Geoco.io
Melissa Data Quality
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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, Trilium Notes seems to be more popular. It has been mentioned 116 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 | github.com | zip-codes.com |
| Pricing | — | |
| Company | Startup from the Czech Republic | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of Trilium Notes 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
Trilium Notes is recommended for users who need detailed organization tools, enjoy customization, or have programming skills to leverage its scripting features. It is also suitable for privacy-conscious users who require encryption and for those who appreciate open-source platforms where they can contribute to the software's development.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Steam Play for Linux, Ubuntu Touch, Flatpak 1.0, Kali, Trilium Notes & more | This Week in Linux 35
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Trilium Notes 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.

Trilium Notes features fast and easy navigation between notes with full-text search and note hoisting, relation maps, link maps for visualizing notes and their relations, and a touch-optimized user interface for...
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.

https://github.com/zadam/trilium#trilium-is-in-maintenance-m... above and beyond the license difference... - Source: Hacker News / over 1 year ago
It depends on what subset of Notion you use. Nothing (including Notion) is perfect for me. I'd like to build my own eventually, but I'm currently using Obsidian which doesn't hit your "works in the browser" requirement. One option,... - Source: Hacker News / over 1 year ago
I can also recommend Trilium Notes [1], which I have been happily using for years. It's currently in "maintenance mode", which I personally see as a feature (no risk of bloatware). Self-hosted, great webapp, optional native clients and... - Source: Hacker News / almost 2 years ago
Tracking ZIP Code API since May 2026.
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A second brain, for you, forever. Obsidian is a powerful knowledge base that works on top of a local folder of plain text Markdown files.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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