Addressr vs Ideal Postcodes Address Finder

Addressr provides Australian address search, validation, and autocomplete through an API or self-hosted software. It uses G-NAF, which its maker describes as Australia's authoritative address database with more than 15 million addresses. Search covers addresses, localities, postcodes, and states or territories. Results include a stable address identifier, and an address-detail endpoint returns structured fields and available geocoding. Teams can use the hosted API through RapidAPI or run the software on their own infrastructure. RapidAPI handles signup, API keys, billing, and plan changes; current hosted prices and request limits are available there. Self-hosting requires Node.js 22 or newer and OpenSearch. The first full data download and index takes about an hour, depending on the machine and options. G-NAF is released every three months, and the maker recommends scheduling updates for a self-hosted index. Optional latitude and longitude geocoding for self-hosting requires more memory and increases indexing time. The self-hosted software is free at free under an Apache-2.0 licence, but the team supplies its infrastructure, hosting, monitoring, and data updates. Addressr also documents an MCP package for Claude, Cursor, VS Code Copilot, and other compatible assistants.

Ideal Postcodes Address Finder adds address autofill to online forms and uses fuzzy matching to correct common address-entry mistakes. Suggestions are free; a credit is charged when a user selects an address and receives the full address. Address data covers more than 240 international countries. UK data is refreshed daily against Royal Mail’s PAF and Ordnance Survey datasets, and each UK lookup includes a UPRN and rooftop geocodes at no extra cost. The maker says its capture flow supports screen-reader users and independent address completion. It lists more than 30 integrations, including Shopify, WooCommerce, Wix, BigCommerce, HubSpot, Zapier, Salesforce, and Microsoft Dynamics. The REST API runs over HTTPS, returns JSON, and uses an API key; requests use TLS 1.3 encryption in transit, with hybrid post-quantum key exchange when supported by the client. Ideal Postcodes states that it is ISO 27001:2022 and Cyber Essentials certified, stores data in UK and EU data centres, and handles it in line with UK GDPR. Plans are one-off credit purchases, with credits valid for 12 months. The listed 200-credit plan costs £90.05 as a one-time purchase; the pricing note says From £9 and includes a 30-day trial.