Software Alternatives, Accelerators & Startups

ZIP Code API VS Joplin

Compare ZIP Code API VS Joplin and see what are their differences

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ZIP Code API logo ZIP Code API

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

Joplin logo Joplin

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.
  • ZIP Code API Landing page
    Landing page //
    2026-05-21

API for US ZIP, ZIP+4, and Canadian postal code data. One unified endpoint set covers North America โ€” no separate APIs by country or data type.

What it does

  • Address validation and standardization โ€” production-grade parser with ZIP+4 append, refreshed monthly
  • Radius search โ€” centroid haversine and true spatial polygon intersection. Returns ZIPs/FSAs within range, with per-result pct_inside overlap percentage for spatial queries
  • Unified lookup endpoint โ€” accepts US ZIP, ZIP+4, Canadian FSA, full Canadian postal codes, or latitude/longitude inputs
  • Autocomplete/typeahead โ€” cities, counties, metros, states, FSAs, ZIPs
  • Point-to-point distance โ€” between any two postal points
  • Census ACS demographics โ€” 2011โ€“2024, 542 fields per ZIP across income, education, housing, social, and economic profiles
  • Boundary lookups โ€” Census tracts, congressional districts, state legislative areas, school districts โ€” with computed intersection percentages per ZIP

What makes it different

  • Licensed commercial data โ€” not commodity or scraped sources
  • Canadian postal coverage โ€” most peers in this space are US-only
  • True spatial radius โ€” not just centroid haversine
  • 14 years of historical ACS depth via API โ€” unusual outside of raw Census downloads
  • One endpoint for all of North America โ€” no country-detection or input-routing logic to maintain on the client side

Pricing

  • Free โ€” 2,500 lookups/day, no credit card required, no expiry
  • Developer โ€” $49/mo, 100K credits, 300/min
  • Professional โ€” $149/mo, 350K credits, 300/min
  • Business โ€” $499/mo, 1.5M credits, 600/min
  • Credit packs โ€” one-time, from 25K ($19) up to 2M ($799)

Resources

  • Joplin Landing page
    Landing page //
    2023-01-20

ZIP Code API

Pricing URL
-
$ Details
-
Release Date
2026 April
Startup details
Country
United States
State
NY

Joplin

$ Details
free
Release Date
-
Startup details

ZIP Code API features and specs

  • Comprehensive ZIP Code Data
    The ZIP Code API from zip-codes.com provides extensive data including ZIP code details, city information, state data, and geographic coordinates, making it a thorough resource for location-based lookups.
  • Multiple Lookup Options
    The API supports various types of lookups including ZIP code to city/state, city/state to ZIP code, distance calculations between ZIP codes, and radius searches, offering flexible querying capabilities.
  • Easy Integration
    The API uses standard REST-based HTTP requests and returns data in commonly used formats like JSON and XML, making it straightforward to integrate into most applications and programming languages.
  • Distance and Radius Calculations
    The API includes built-in functionality for calculating distances between ZIP codes and finding ZIP codes within a specified radius, which is valuable for store locators, shipping estimates, and proximity-based features.
  • Well-Documented Endpoints
    The API provides clear documentation for its various endpoints and parameters, helping developers understand available features and implement them correctly without extensive trial and error.

Joplin features and specs

  • Open Source
    Joplin is open source, which means the source code is freely available and can be modified or studied by anyone. This ensures transparency and provides the community with the ability to contribute to its development.
  • Cross-Platform
    Joplin is available on multiple platforms including Windows, macOS, Linux, Android, and iOS, which allows users to access their notes and to-dos across different devices.
  • End-to-End Encryption
    Joplin offers end-to-end encryption, ensuring that your notes and data are securely encrypted and only accessible by you.
  • Rich Text Support
    Joplin supports Markdown, which allows users to create notes with rich text formatting, including headers, lists, checkboxes, images, links, and more.
  • Synchronization Options
    Joplin provides multiple options for synchronization, including cloud services like Dropbox, OneDrive, and Nextcloud, enabling users to keep their data in sync across devices.
  • Resource Management
    Joplin allows users to attach files, images, and other resources to their notes, making it a versatile tool for managing different types of information.

Possible disadvantages of Joplin

  • User Interface
    The user interface of Joplin can be less intuitive and visually appealing compared to other note-taking apps, which might lead to a steeper learning curve for new users.
  • Limited Collaboration
    Joplin is primarily designed for individual use and lacks extensive collaboration features found in other apps like Google Keep or Evernote, making it less suitable for team-based tasks.
  • No Native Web App
    Joplin does not have a native web app version, which can be a drawback for users who prefer accessing their notes through a browser without installing the desktop or mobile applications.
  • Sync Configuration
    Setting up synchronization options can be complex for some users, especially for those who are not familiar with cloud services or network configurations.
  • Resource Intensive
    Joplin can be resource-intensive, particularly when dealing with a large number of notes or attachments, which might affect performance on older devices.

Analysis of ZIP Code API

Overall verdict

  • ZIP Code API from zip-codes.com is a solid, reliable choice for developers and businesses needing accurate US and Canadian postal code data, offering a straightforward RESTful interface with regularly updated databases.

Why this product is good

  • Provides accurate and frequently updated ZIP code, city, state, and geographic data
  • Offers a simple RESTful API that is easy to integrate into web and mobile applications
  • Supports features like ZIP code lookup, radius search, and distance calculations
  • Includes both US ZIP codes and Canadian postal codes for broader coverage
  • Backed by an established data provider with a long track record in postal data

Recommended for

  • Developers building address validation or autofill features
  • E-commerce platforms needing shipping and location-based calculations
  • Businesses performing geographic or radius-based store locators
  • Applications requiring reliable US and Canadian postal data
  • Marketing and logistics teams that need regional or demographic targeting

Analysis of Joplin

Overall verdict

  • Joplin is highly regarded among users who appreciate open-source software and need a versatile note-taking solution. Its extensive features, along with active community support, make it a strong contender in the productivity software space.

Why this product is good

  • Joplin is an open-source note-taking and to-do application with features such as synchronization across devices, support for rich-text and Markdown, and a web clipper for saving web pages and screenshots. It prioritizes user privacy and data ownership by allowing notes to be stored on local devices or using secure sync options like Nextcloud, Dropbox, or OneDrive. Additionally, Joplin supports end-to-end encryption to protect user data.

Recommended for

  • Users who prefer open-source applications
  • Individuals seeking a secure and privacy-focused note-taking app
  • People who need cross-platform compatibility
  • Users who want to organize notes using Markdown
  • Anyone looking for an alternative to mainstream note-taking apps

ZIP Code API videos

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Joplin videos

Joplin, a free, open source, self hosted syncing note taking alternative to Evernote and OneNote..

More videos:

  • Review - Joplin Is An Open Source Alternative To Evernote
  • Review - Joplin Desktop: Take Notes With A Rich Markdown Editor

Category Popularity

0-100% (relative to ZIP Code API and Joplin)
Zip Lookup
100 100%
0% 0
Note Taking
0 0%
100% 100
APIs
100 100%
0% 0
Notes
0 0%
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare ZIP Code API and Joplin

ZIP Code API Reviews

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Joplin Reviews

20 Obsidian Alternatives: Top Note-Taking Tools to Consider
Joplin is best defined as an open-source note-taking app. The app lets you take notes and access them anywhere as it backs all your notes on the cloud. You can create checklists, notes, and tables within Joplin or attach images and videos. In addition, Joplin supports diagrams and math functions, making it an inclusive note-taking app regardless of subject or topic.
Source: clickup.com
The 6 best note-taking apps in 2024
Not only is Joplin the best open source note-taking app on our list, but it's also the best free Evernote alternative too. For a number of reasons I'll explore below, I don't feel Evernote merits a spot on this list right now; however, because Evernote has been such a staple of the note-taking app space, most other apps compete by trying to be different. OneNote is awesome,...
Source: zapier.com
The best note-taking apps for collecting your thoughts and data
In order to synchronize Joplin among your devices, you need to set it up with one of several existing cloud services (such as Dropbox or OneDrive). You can also use Joplin Cloud, which is available in Joplinโ€™s paid plans: Basic, which includes 2GB storage space and 10MB per note or attachment, and Pro, which offers 30GB storage space, 200MB per note or attachment, and other...
10 Best Open Source Note-Taking Apps for Linux
It also supports alarms (notifications) for to-dos, End-To-End Encryption (E2EE) for security, allows for saving web pages and screenshots as notes using the web clipper extension available in Firefox and Chrome web browsers, and supports synchronization with cloud or file storage services such as services including Joplin Cloud, Dropbox, and OneDrive.
Source: www.tecmint.com
The best encrypted note taking apps
Joplin is open-source, maintains Linux, Android, iOS, macOS, and Windows apps, and also offers built in cloud-sync functionality called โ€œJoplin cloud.โ€ Finally, Joplin scores highly on their use of end-to-end encrypted to keep all user notes private. For more convenience features Joplin offers a web clipper directly integrated into the notes app to allow for cataloging,...
Source: www.skiff.com

Social recommendations and mentions

Based on our record, Joplin seems to be more popular. It has been mentiond 358 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

ZIP Code API mentions (0)

We have not tracked any mentions of ZIP Code API yet. Tracking of ZIP Code API recommendations started around May 2026.

Joplin mentions (358)

  • Show HN: Files.md โ€“ open-source alternative to Obsidian
    What is this providing over similarly Markdown based open source note taking applications like Joplin? (https://joplinapp.org/) I've been a huge fan of the fact that my backend sync infrastructure is my own self-hosted S3 bucket with local clients handling the presentation layer. - Source: Hacker News / 2 months ago
  • An Introduction to Obsidian
    Shout out to Joplin (https://joplinapp.org/), which I use on a daily basis. It does most of what Obsidian does but has a free sync version where you just use your cloud drive as the storage. The main thing missing, from what I've found, is that it does do the "notes mind map". But I never really found that useful. - Source: Hacker News / 4 months ago
  • Ditching Obsidian and building my own
    I use Joplin (https://joplinapp.org) on mobile and pc(windows and Linux). Joplin has a free encrypted sync via OneDrive. - Source: Hacker News / about 1 year ago
  • Why I switched from obsidian: A real developerโ€™s story and what Iโ€™m using now
    Joplin Official Website My current workhorse for fast, reliable notes. - Source: dev.to / about 1 year ago
  • Ask HN: What Are You Working On? (February 2025)
    Thanks! I built the editor using Tiptap (https://tiptap.dev/) does something similar. I'll think about this for sure, especially since I've been thinking of making it possible to save and read local files. If you'd like to try Gorby, send me an email and I'll be happy to give you a free license code :). - Source: Hacker News / over 1 year ago
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What are some alternatives?

When comparing ZIP Code API and Joplin, you can also consider the following products

Smarty - Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.

Obsidian.md - 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.

Zipcodestack - Free Zip Code API - Free Postal Code Validation | Zipcodestack

Standard Notes - A safe place for your notes, thoughts, and life's work

PostalDataPI - The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.

Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.