
PostalDataPI
Smarty
Melissa Data Quality
Codecademy
Coursera
Free Code Camp
Udemy
Khan Academy
edX
Pluralsight
Treehouse
PostalDataPI is a global postal code validation and enrichment API covering 240+ countries and territories. One API, one key, one flat rate โ $0.000028 per query with no tiers or subscriptions.
What you get back: Up to 18 metadata fields per postal code โ city, state/region, coordinates, timezone, three levels of administrative hierarchy, elevation, and more. Sub-5ms cached responses.
Works everywhere: US ZIP codes, UK postcodes, German PLZ, Japanese postal codes, Canadian FSAs, and 230+ more. Format normalization handles case, spacing, and hyphen variations automatically.
Get started in 60 seconds: 1,000 free queries on signup, no credit card required. SDKs for Python and Node.js. MCP server for AI agents (Claude, Cursor, etc.).
Built for developers: REST API, consistent JSON responses across all countries, OpenAPI spec, llms.txt for AI agent discovery.
PostalDataPI
CodecademyBased on our record, Codecademy seems to be more popular. It has been mentiond 113 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.
However, a little research was enough to dispel that misconception. Yes, there was a technical aspect to programming, but most developers weren't doing complex calculations all the time. So, my preconceptions faded away and turned into great curiosity and interest. I started studying JavaScript, HTML, and CSS on YouTube and also studied on Codecademy platform. - Source: dev.to / about 2 years ago
Codecademy is a freemium platform with high-quality content. Their courses range from web development to data science, and are interactive and text-based. - Source: dev.to / over 2 years ago
If you really have decided to become the next Guru on Scratch then you should learn at least one real programming language like JavaScript. I found this JavaScript course very useful: https://learnjavascript.online/. You can also learn Java and Python on codecademy.com. - Source: dev.to / almost 3 years ago
Codecademy.com makes use of a similar approach to the one you mentioned in order to teach JavaScript (and HTML and CSS), giving immediate feedback for the code you write on your browser (except that it uses the browser, as mentioned, instead of an IDE). Source: about 3 years ago
Codecademy offers interactive coding courses for various programming languages, including Python and JavaScript. It provides a hands-on learning experience and offers a free trial to get started. codecademy.com. Source: about 3 years ago
Smarty - Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
Coursera - Build skills with courses, certificates, and degrees online from world-class universities and companies
Melissa Data Quality - Melissa helps companies to harness Big Data, legacy data, and people data (names, addresses, phone numbers, and emails).
Free Code Camp - Learn to code by helping nonprofits.