Alternatives to USPS Addresses API

AddressZen

AddressZen suits teams that need to validate or autocomplete US and international addresses in forms or applications.

Addressify suits organizations that need Australian address validation, parsing, autocomplete, or geocoding in their systems.

Byteplant Address Validator

It suits e-commerce, CRM, ERP, direct-mail, logistics, or shipping workflows that need address checks or corrections.

It suits organizations validating billing or shipping addresses during data entry or in batch, including those handling international addresses.

Addrex Address Validation API

Addrex suits teams cleaning address spreadsheets or adding address checks to app-connected workflows.

Addressr

Addressr suits teams needing Australian address lookup through a hosted API or their own infrastructure.

Hopewiser Address Validation

It suits organizations that need to check or clean UK and international address data, whether through cloud tools or local processing.

Address Finder suits teams adding address entry to online forms, especially those needing address correction, autocomplete, or integrations with listed commerce and business platforms.

Lob Address Verification

It suits teams that need to check or standardize individual and bulk addresses, including during website entry.

PostalUp suits developers and teams handling U.S.

Smarty Address Verification

Smarty says the service is useful for organizations that send mail, deliver packages, route people, or maintain, clean, or merge databases.

It suits organisations and individuals handling international address capture, validation, or postcode lookup.

PostGrid Address Verification

It suits developers integrating address checks through APIs or SDKs, operations and data teams using a dashboard, and enterprises seeking SLA-backed uptime and dedicated support.

The API suits webshops and CRM systems that need address autocomplete, correction, and standardized international data.

It suits organizations planning cash across multiple entities and scenarios over a six-month horizon.