With a little file creation trickery, it's really quite easy to build an ActivityPub server.
Free, easy-to-use REST API interface delivering worldwide stock market data. Obtain real-time stock data for any ticker down to the minute, request intraday quotes or search 30+ years of accurate historical market data. Easily integrate the API and make use of 170,000+ worldwide stock tickers, collected from 70 global exchanges, including Nasdaq, NYSE, and more
Free tier: 100 requests / month
Market index figures are unavailable at the free tier.
Set up a free account, get access to NASDAQ data through their APIs.
Scripts and stuff for manipulating the json files generated by FlightAware's version of dump1090. Mostly command line and ncurses.
JLess is a command-line JSON viewer designed for reading, exploring, and searching through JSON data. JLess will pretty print your JSON and apply syntax highlighting. Use it when exploring external APIs, or debugging request payloads. Expand and collapse Objects and Arrays to grasp the high- and low-level structure of a JSON document. JLess has a large suite of vim-inspired commands that make exploring data a breeze. JLess supports full text regular-expression based search. Quickly find the data you're looking for in long String values, or jump between values for the same Object key.
Vi-like keybindings.
The Covid Act Now API provides access to comprehensive COVID data — both current and historical. The data is available for all US states, counties, and metros and is aggregated from a number of official sources, quality assured, and updated daily. It is available in JSON and CSV formats.
CryptoLyzer is a fast and flexible server cryptographic settings analyzer library for Python with an easy-to-use command line interface with both human- and machine-readable output. It works with multiple cryptographic protocols (SSL/TLS, opportunistic TLS, SSH) and analyzes
additional security mechanisms (web security related HTTP response header fields, JA3 tag).
Stork is a library for creating beautiful, fast, and accurate full-text search interfaces on the web. Designed with static sites in mind, specifically.
It comes in two parts. First, it's a command-line tool that indexes content and creates a search index file that you can upload to a web server. Second, it's a Javascript library that uses that search index file to build an interactive search interface that displays optimal search results immediately to your user, as they type.
Stork is built with Rust, and the Javascript library uses WebAssembly behind the scenes. It's easy to get started and is even easier to customize so it fits your needs. It's perfect for Jamstack sites and personal blogs, but can be used wherever you need to bring search to your users.
Github: https://github.com/jameslittle230/stork
The index generation and upload process could be added to the site generation and deployment process fairly easily, I think.
Lunr.js works on the client-side through JavaScript. Instead of sending calls to a backend, Lunr looks up search terms in an index built on the client-side itself. This avoids expensive back-and-forth network calls between the browser and your server. There are plenty of tutorials online to showcase Lunr's website search functionality. But you can actually use Lunr.js to search any array of JavaScript objects.
An API-only service that allows you to determine whether Mercury is in retrograde for a given date.
Seems essential to me.
Open-Meteo offers free weather forecast APIs for open-source developers and non-commercial use. No API key is required. Pulls its data from the weather services of multiple countries. 7 day forecasts updated every three hours with a maximum resolution of 2km.
jc JSONifies the output of many CLI tools and file-types for easier parsing in scripts. This allows further command-line processing of output with tools like jq or jello by piping commands. The jc parsers can also be used as python modules.
BlanketDB is a very simple database written in Python based on SQLite. It is intended for small IoT projects where you need a quick way to collect and store data from sensors and other devices. You communicate with BlanketDB using HTTP GET / POST / DELETE requests. Request and response bodies are usually JSON, but you can also POST HTML forms directly to BlanketDB. There is no schema in the database, you simply store objects in buckets.
Documentation: https://blanketdb.readthedocs.io.
A project that teaches you how to write your own JSON parser.
A tiny JSON storage service. Create, Read, Update, Delete and Search JSON data.
All returned entries are timestamped (ISO 8601). Blank fields are returned as null and not omitted. Implements JSON:API guidelines. Paginated, 20 hits per by default. OAuth2 authentication on all requests. CRUD.
Authorization: token ...
A much more advanced disk usage utility for Linux. Reminiscent of htop in terms of how it displays things. All text mode. Responsive to terminal reconfigurations. Sortable. Can output JSON on demand.
An air quality monitoring network built on a new generation of Internet of Things sensors. Using a new generation of laser particle counters to provide real-time measurement of PM1.0, PM2.5 and PM10. PurpleAir sensors are easy to install and only require a power outlet and WiFi. They use WiFi to report in real time to the PurpleAir map. Sells air quality sensors that are pretty expensive. Don't know if it'd be possible to upload data from other kinds of sensors.
Account creation requires authenticating with a Google account only.
They have a JSON API but it's read-only and just a straight dump from their database: https://www.purpleair.com/json
https://www2.purpleair.com/community/faq#hc-access-the-json
There is also a Thingspeak API: https://www2.purpleair.com/community/faq#hc-thingspeak-api
They also seem to have a REST API but you need an API key and ChannelID. Not a big deal, really.
I don't know if this service is suitable for my purposes.
A formal schema for representing a resume' or CV as a JSON document so that it's machine readable.
JSON Resume is a community driven open source initiative to create JSON-based standard for resumes. Makes it ideal for running through a generator to output a static resume document. Of course, the PoC is written in node.js. Can be integrated into various CMSes and management platforms.
Free tool to unminify (unpack, deobfuscate) JavaScript, CSS, HTML, XML and JSON code, making it readable and pretty. The tool works locally in your browser, no data is uploaded to the server.