PostalDataPI
Smarty
Melissa Data Quality
Pinboard
Raindrop.io
Diigo
Tagpacker
Instapaper
wallabag
Papaly
start.me
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
PinboardWhile all the other bookmarking sites have died, pinboard.in remains and is a reliable and handy place to save all those links you love but are sure to otherwise forget.
Based on our record, Pinboard seems to be more popular. It has been mentiond 76 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.
Shout out to Pinboard for making bookmarking pages and adding notes incredibly easy. They have a bookmarklet that sits on my bookmarks toolbar and if I like a page/tweet/video etc I just hit the "Add pin", enter some tags and hit enter. This works so well that I went through and bookmarked and tagged all of my LinkedIn connections as well (inspired by a post from Derek Sivers [1]). People are generally amazed at... - Source: Hacker News / 5 months ago
I switched to using Pinboard [0] for all bookmarking and never looked back. The real unlocks were: - using the bookmarklet that pops open a small browser window with the page title, suggested tags - doing the same on my iphone - have a couple in browser bookmarks that point to the tags for important things It's so good I even used it to track all of my LinkedIn connections tagged by location, job function etc... - Source: Hacker News / 7 months ago
Https://pinboard.in Simple, usable, timeless. - Source: Hacker News / 9 months ago
Pinboard.in. Also pay the $20/yr for archiving if the links rot https://pinboard.in/. - Source: Hacker News / about 1 year ago
The classic https://pinboard.in/, maybe? I haven't used it, but it tempts me a few times per decade. - Source: Hacker News / about 1 year ago
Smarty - Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Melissa Data Quality - Melissa helps companies to harness Big Data, legacy data, and people data (names, addresses, phone numbers, and emails).
Diigo - Diigo is a powerful research tool and a knowledge-sharing community