A "public suffix" is a domain name under which Internet users can directly register own names.

Browsers and other web clients can use it to avoid privacy-leaking "supercookies", avoid privacy-leaking "super domain" certificates, domain highlighting parts of the domain in a user interface, and sorting domain lists by site.

Libpsl has built-in PSL data for fast access, allowing to load PSL data from files, checks if a given domain is a public suffix, provides immediate cookie domain verification, finds the longest public part of a given domain, finds the shortest private part of a given domain, works with international domains (UTF-8 and IDNA2008 Punycode), is thread-safe, and handles IDNA2008 UTS#46.

Signpost is the easy and intuitive solution for signing HTTP messages on the Java platform in conformance with the OAuth Core 1.0a standard. Signpost follows a modular and flexible design, allowing you to combine it with different HTTP messaging layers.

Libnslog provides a category-based logging library which supports complex logging filters, multiple log levels, and provides context through to client applications. It is developed as part of the NetSurf project.

Catalyst::Plugin::Session::Store::FastMmap is a fast session storage plugin for Catalyst that uses an mmap'ed file to act as a shared memory interprocess cache. It is based on Cache::FastMmap.

HTML::Selector::XPath is a Perl module for parsing and scraping XML/HTML documents using XPath expressions.

Gumbo is an implementation of the HTML5 parsing algorithm implemented as a pure C99 library.

Apache Tomcat is a free implementation of the Java Servlet, JavaServer Pages, Java Expression Language and Java WebSocket technologies.

Tibanna runs portable pipelines (in CWL/WDL and Snakemake) on the AWS Cloud.

Hpcguix-web provides a web interface to the list of packages provided by Guix. The list of packages is searchable and provides instructions on how to use Guix in a shared HPC environment.

CGI.pm is a stable, complete and mature solution for processing and preparing HTTP requests and responses. Major features include processing form submissions, file uploads, reading and writing cookies, query string generation and manipulation, and processing and preparing HTTP headers.

Catalyst::Component::InstancePerContext returns a new instance of a component on each request.

jo is a command-line utility to create JSON objects or arrays. It creates a JSON string on stdout from words provided as command-line arguments or read from stdin.

LinkChecker is a website validator. It checks for broken links in websites. It is recursive and multithreaded providing output in colored or normal text, HTML, SQL, CSV, XML or as a sitemap graph. It supports checking HTTP/1.1, HTTPS, FTP, mailto, news, nntp, telnet and local file links.

This module attempts to make using HTML templates simple and natural. It extends standard HTML with a few new HTML-esque tags: <TMPL_VAR>, <TMPL_LOOP>, <TMPL_INCLUDE>, <TMPL_IF>, <TMPL_ELSE> and <TMPL_UNLESS>. The file written with HTML and these new tags is called a template. Using this module you fill in the values for the variables, loops and branches declared in the template. This allows you to separate design from the data.

The WWW::RobotRules module parses /robots.txt files as specified in "A Standard for Robot Exclusion", at <http://www.robotstxt.org/wc/norobots.html>. Webmasters can use the /robots.txt file to forbid conforming robots from accessing parts of their web site.

nghttp2 implements the Hypertext Transfer Protocol, version 2 (HTTP/2).

A reusable C library provides the HTTP/2 framing layer, with several tools built on top of it:

• nghttp, a command-line HTTP/2 client. It exposes many advanced and low-level aspects of the protocol and is useful for debugging.

• nghttpd, a fast, multi-threaded HTTP/2 static web server that serves files from a local directory.

• nghttpx, a fast, multi-threaded HTTP/2 reverse proxy that can be deployed in front of existing web servers that don't support HTTP/2. Both nghttpd and nghttpx can fall back to HTTP/1.1 for backwards compatibility with clients that don't speak HTTP/2.

• h2load for benchmarking (only!) your own HTTP/2 servers.

• HTTP/2 uses a header compression method called HPACK. nghttp2 provides a HPACK encoder and decoder as part of its public API.

• deflatehd converts JSON data or HTTP/1-style header fields to compressed JSON header blocks.

• inflatehd converts such compressed headers back to JSON pairs.

The Jetty Web Server provides an HTTP server and Servlet container capable of serving static and dynamic content either from a standalone or embedded instantiation. This package provides IO-related utility classes.

Libwebsockets is a library that allows C programs to establish client and server WebSockets connections---a protocol layered above HTTP that allows for efficient socket-like bidirectional reliable communication channels.

HTML::TableExtract is a Perl module for extracting the content contained in tables within an HTML document, either as text or encoded element trees.

libRocket is a C++ user interface package based on the HTML and CSS standards. libRocket uses the open standards XHTML1.0 and CSS2.0 (while borrowing features from HTML5 and CSS3), and extends them with features suited towards real-time applications. It is designed as a complete solution for any project's interface needs:

• Dynamic layout system.

• Efficient application-wide styling, with a custom-built templating engine.

• Fully featured control set: buttons, sliders, drop-downs, etc.

• Runtime visual debugging suite.

• Easily integrated and extensible with Python or Lua scripting.

Gemget is a command line downloader for the Gemini protocol. It works well with streams and can print headers for debugging as well.

nsgenbind is a tool to generate JavaScript to DOM bindings from w3c webidl files and a binding configuration file.

This module will attempt to load find and load configuration files of various types. Currently it supports YAML, JSON, XML, INI and Perl formats.

This Catalyst plugin enables you to create "access logs" from within a Catalyst application instead of requiring a webserver to do it for you. It will work even with Catalyst debug logging turned off.