OpenID

A decentralized authentication protocol based on OAuth 2.0 that enables applications to verify a user's identity through an external identity provider instead of managing credentials directly.

Markdown

A lightweight markup language used to add formatting to plain text documents using simple, human-readable syntax.

A backward-compatible CSS language extension inspired by Sass that supports variables, mixins, operations, and functions.

IAB TCF

An open-source industry standard developed by IAB Europe that helps companies comply with GDPR and ePrivacy requirements when processing personal data in digital advertising ecosystems.

RelMeAuth

A proposed open standard for using rel-me links to profiles on OAuth supporting services to authenticate via either those profiles or your own site.

Text

The plain text document format.

OpenAPI

A specification language for defining HTTP APIs, typically written in YAML or JSON.

Rack

A minimal, modular interface and invocation convention that operates between Ruby web servers and web applications to standardize how HTTP requests and responses are exchanged.

XML

A markup language and file format for storing, transmitting, and reconstructing structured data in a platform-independent way.

Prerender

A deprecated browser hint that instructed web browsers to preload and render a web page in the background before navigation occurred.

WebAssembly

A portable binary instruction format that runs in modern web browsers with near-native performance, enabling frontend coding in languages that were not traditionally used for web interfaces, such as C/C++, C#, and Rust.

LLMs.txt

A proposed standard that provides structured content and instructions to guide large language models in understanding and summarizing a website's content.

Webmention

A simple protocol to notify any URL when a website links to it, and for web pages to request notifications when somebody links to them.

ActivityPub

A decentralized social networking protocol used by various Fediverse services such as Mastodon, Pixelfed, and PeerTube.

JSON Web Token

An open standard (RFC 7519) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object.

OpenTelemetry

An open-source, vendor-neutral observability framework and toolkit for collecting, processing, and exporting telemetry data such as traces, metrics, and logs.

IndieAuth

A decentralized identity protocol built on top of OAuth 2.0.

AdChoices

A self-regulatory standard for online interest-based advertising that gives consumers enhanced control over the collection and use of their data to deliver relevant ads.

ESI

A simple markup language used to define web page components for dynamic assembly and delivery of web applications at the edge of the Internet.

XMP

An ISO standard for creating, processing, and exchanging metadata for digital documents.

Micropub

An HTTP-based client-server protocol used to create, update, and delete posts on servers using third-party clients.