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What is findAddress.io?

FindAddress.io is a fast and reliable API for address lookup and postcode verification in the UK, crafted specifically for developers and businesses that require accurate address data without the usual complications or costs associated with larger enterprise solutions. Our RESTful JSON API includes functionalities like postcode lookups, address autocomplete, and real-time address validation, which together improve form completion rates, reduce address errors, and help obtain clean, structured UK address information instantly upon entry. Designed for modern web applications, findAddress.io integrates effortlessly into numerous platforms, including checkout systems, registration forms, customer relationship management tools, and internal applications, while supporting widely-used programming languages such as JavaScript, PHP, and Node.js. As a result, it proves to be an excellent option for organizations looking to enhance their data collection processes, ensuring both precision and effectiveness. Furthermore, the user-friendly nature of the API allows businesses to implement it quickly, minimizing disruption and maximizing operational efficiency.

What is Postcoder?

Postcoder – Customer Data Verification Made Simple. Trusted by NHS, Sky, KFC, Rightmove, and over 10,000 organisations globally, Postcoder is the all-in-one API platform from Allies Computing that helps businesses collect accurate, verified customer data from the very first interaction. Rated 4.6 stars on G2 and the winner of multiple industry awards, it's the toolkit that keeps forms fast, data clean, and customer journeys completely friction-free. Postcoder's address lookup lets customers find their address in seconds — whether they type a postcode, begin entering a street name, or search by geographic coordinates. The service draws on Royal Mail PAF, Multiple Residence data, Ordnance Survey AddressBase, and international address databases spanning 249 countries, delivering consistently high match rates both in the UK and overseas. Beyond addresses, Postcoder packages a full suite of contact data tools into a single API integration: - Bank account validation: Confirm sort code and account number combinations in real time, retrieve branch-level details, and establish direct debit eligibility before a payment mandate is submitted. - Email validation: Go beyond syntax checks to assess domain health, detect disposable addresses, and score deliverability risk, keeping CRM lists and transactional inboxes reliable. - Mobile number validation: Confirm whether a mobile is live and reachable across more than 200 countries, cutting wasted spend on undeliverable SMS communications. - OTP verification: Add an SMS-based one-time password layer to sign-up, login, or checkout flows to protect accounts and verify identity at the point of entry. Rather than managing multiple vendors, businesses get one integration, one dashboard, and one support team. Getting started takes minutes — a free trial is available with no payment details required, and the documentation includes ready-to-use sample code across popular languages.

What is AddressFinder?

Streamline your address search process by utilizing our user-friendly address finder, which offers quick, predictive, and accurate address autocomplete features. Our address discovery and verification software is specifically crafted to identify, validate, cleanse, and format reliable Australian addresses via a simple and seamlessly integrable API. Effortlessly link AddressFinder to your e-commerce platform or CRM through our easy-to-use plugins. Ensure the reliability of your address database, as AddressFinder’s verification service enables you to upload a spreadsheet of Australian addresses or access our verification API to match them with verified addresses from trusted AU datasets. Take advantage of AddressFinder’s extensive array of APIs to not only complete address entries but also to obtain address metadata, including latitude and longitude coordinates. Our address autocomplete API assures that only valid addresses, drawn from official Australia Post and PSMA databases, are displayed, guaranteeing that the data you collect is both credible and accurate. By choosing AddressFinder, you can significantly improve user experience while upholding high levels of precision in your address collection processes. Additionally, our service can help you reduce manual errors and enhance overall operational efficiency.

Media

No images available

Media

Media

Integrations Supported

BigCommerce
CSS
Contact Form 7
Divi
Drupal
Elementor
Formidable Forms
Gravity Forms
Gutenberg Technology
JavaScript
Magento
Microsoft Dynamics 365
Ninja Forms
PHP
Python
Salesforce
Shopify
WP Fluent Forms
Wix
WooCommerce

Integrations Supported

BigCommerce
CSS
Contact Form 7
Divi
Drupal
Elementor
Formidable Forms
Gravity Forms
Gutenberg Technology
JavaScript
Magento
Microsoft Dynamics 365
Ninja Forms
PHP
Python
Salesforce
Shopify
WP Fluent Forms
Wix
WooCommerce

Integrations Supported

BigCommerce
CSS
Contact Form 7
Divi
Drupal
Elementor
Formidable Forms
Gravity Forms
Gutenberg Technology
JavaScript
Magento
Microsoft Dynamics 365
Ninja Forms
PHP
Python
Salesforce
Shopify
WP Fluent Forms
Wix
WooCommerce

API Availability

Has API

API Availability

Has API

API Availability

Has API

Pricing Information

£5/month
Free Trial Offered?
Free Version

Pricing Information

£27 per 500 credits
Free Trial Offered?
Free Version

Pricing Information

$39 per month
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

findAddress.io

Date Founded

2019

Company Location

United Kingdom

Company Website

findAddress.io

Company Facts

Organization Name

Allies Computing

Date Founded

1987

Company Location

United Kingdom

Company Website

postcoder.com

Company Facts

Organization Name

AddressFinder

Company Location

Australia

Company Website

addressfinder.com.au

Categories and Features

Address Verification

Address Validation
Autocomplete
Automatic Formatting
Data Cleansing
Data Discovery
Data Quality Control
Data Verification
Geographic Maps
Geolocation
Metadata Management
Reporting / Analytics
Search / Filter

Categories and Features

Address Verification

Address Validation
Autocomplete
Automatic Formatting
Data Cleansing
Data Discovery
Data Quality Control
Data Verification
Geographic Maps
Geolocation
Metadata Management
Reporting / Analytics
Search / Filter

Categories and Features

Address Verification

Address Validation
Autocomplete
Automatic Formatting
Data Cleansing
Data Discovery
Data Quality Control
Data Verification
Geographic Maps
Geolocation
Metadata Management
Reporting / Analytics
Search / Filter

Data Quality

Address Validation
Data Deduplication
Data Discovery
Data Profililng
Master Data Management
Match & Merge
Metadata Management

Popular Alternatives

Popular Alternatives

Popular Alternatives

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AddressZen

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Postcoder

Allies Computing