Quicktype generates types and helper code for reading JSON in C#, Swift, JavaScript, Flow, Python, TypeScript, Go, Rust, Objective-C, Kotlin, C++ and more. Customize online with advanced options, or download a command-line tool.

Graphtage is a commandline utility and underlying library for semantically comparing and merging tree-like structures, such as JSON, XML, HTML, YAML, and CSS files.

HTTPie—aitch-tee-tee-pie—is a command line HTTP client with an intuitive UI, JSON support, syntax highlighting, wget-like downloads, plugins, and more

Datasette provides an instant, read-only JSON API for any SQLite database. It also provides tools for packaging the database up as a Docker container and deploying that container to hosting providers such as Zeit Now or Heroku.

Falcor is the innovative data platform that powers the Netflix UIs. Falcor allows you to model all your backend data as a single Virtual JSON object on your Node server. On the client you work with your remote JSON object using familiar JavaScript operations like get, set, and call. If you know your data, you know your API.

Falcor is middleware. It is not a replacement for your application server, database, or MVC framework. Instead Falcor can be used to optimize communication between the layers of a new or existing application.

JSON storage bins with schema validation

JSON Schema is a vocabulary that allows you to annotate and validate JSON documents.

Bottery is a syntax, editor, and simulator for prototyping generative contextual conversations modeled as finite state machines.

RethinkDB is the first open-source, scalable JSON database built from the ground up for the realtime web. It inverts the traditional database architecture by exposing an exciting new access model – instead of polling for changes, the developer can tell RethinkDB to continuously push updated query results to applications in realtime. RethinkDB’s realtime push architecture dramatically reduces the time and effort necessary to build scalable realtime apps.

Matrix is an open standard for decentralised communication, providing simple HTTP APIs and open source reference implementations for securely distributing and persisting JSON over an open federation of servers.

A Swiss Army Knife for résumés and CVs
For Windows, OS X, Linux, and Node.js
Feed me: One or more FRESH or JSON Resume format résumés.
Sit back while I generate polished résumés in HTML, WORD, Markdown, PDF, LaTeX, JSON, YAML, XML, plain text, smoke signal, and carrier pigeon.
Themes: Choose from any FRESH or JSON Resume theme or build your own with Handlebars or Underscore.

Kinto is a lightweight JSON storage service with synchronisation and sharing abilities.

A specification for building APIs in JSON. Clients built around JSON API are able to take advantage of its features around efficiently caching responses, sometimes eliminating network requests entirely.

Apache CouchDB™ is a database
that uses JSON for documents,
JavaScript for MapReduce indexes,
and regular HTTP for its API

A Lawnchair is sorta like a couch except smaller and outside. Perfect for HTML5 mobile apps that need a lightweight, adaptive, simple and elegant persistence solution.