Apache Sling

aid: apache-sling
name: Apache Sling
description: Apache Sling is a RESTful web framework built on top of the Java Content Repository (JCR) standard. It maps HTTP
  requests to content resources using a resource-oriented URL decomposition model and uses scripts or servlets to render responses,
  supporting multiple scripting languages including HTL, JSP, Groovy, and server-side JavaScript. Apache Sling forms the foundation
  of Adobe Experience Manager (AEM) and is an Apache Software Foundation project with 300+ modular OSGi bundles.
type: Index
position: Consumer
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- Content Management
- Java
- JCR
- OSGi
- REST
- Web Framework
- Open Source
- Adobe Experience Manager
created: '2026-03-16'
modified: '2026-04-19'
url: https://raw.githubusercontent.com/api-evangelist/apache-sling/refs/heads/main/apis.yml
specificationVersion: '0.19'
apis:
- aid: apache-sling:apache-sling-resource-api
  name: Apache Sling Resource API
  description: 'The Sling Resource API provides RESTful access to JCR content repository nodes via HTTP. Every content node
    is addressable as a URL, supporting GET, POST, PUT, DELETE, and MOVE operations through the Sling Default GET/POST Servlets.
    Content is accessible in multiple formats via selector and extension: .json for structured data, .xml for XML export,
    .infinity.json for deep tree traversal, and .tidy.json for formatted output. The POST Servlet (SlingPostServlet) handles
    content creation, modification, deletion, move, copy, and import operations.'
  humanURL: https://sling.apache.org/documentation/the-sling-engine/resources.html
  tags:
  - REST
  - JCR
  - Content Management
  - Resources
  - Java
  properties:
  - type: Documentation
    url: https://sling.apache.org/documentation/the-sling-engine/resources.html
  - type: Documentation
    url: https://sling.apache.org/documentation/bundles/manipulating-content-the-slingpostservlet-servlets-post.html
- aid: apache-sling:apache-sling-scripting-api
  name: Apache Sling Scripting API
  description: The Sling Scripting API enables server-side rendering through multiple scripting engines. Scripts are resolved
    from the content repository based on resource type and selectors, supporting HTL (HTML Template Language / Sightly), JSP
    (JavaServer Pages), Groovy, FreeMarker, Thymeleaf, and server-side JavaScript via Rhino. The ScriptEngine API allows integration
    of any JSR-223 compatible scripting language.
  humanURL: https://sling.apache.org/documentation/bundles/scripting.html
  tags:
  - Scripting
  - HTL
  - JSP
  - Groovy
  - Templates
  - Java
  properties:
  - type: Documentation
    url: https://sling.apache.org/documentation/bundles/scripting.html
  - type: Documentation
    url: https://sling.apache.org/documentation/bundles/scripting/scripting-htl.html
- aid: apache-sling:apache-sling-event-api
  name: Apache Sling Event API
  description: The Sling Event API provides a job processing and eventing system built on OSGi EventAdmin. It supports distributed
    job queuing, scheduled job execution, event broadcasting across cluster nodes, and workflow triggering. The JobManager
    API enables job creation, monitoring, and management through a programmatic interface and also provides REST endpoints
    via the Web Console integration.
  humanURL: https://sling.apache.org/documentation/bundles/apache-sling-eventing-and-job-handling.html
  tags:
  - Events
  - Jobs
  - Async
  - OSGi
  - Workflow
  properties:
  - type: Documentation
    url: https://sling.apache.org/documentation/bundles/apache-sling-eventing-and-job-handling.html
common:
- type: GitHubOrganization
  url: https://github.com/apache/sling-org-apache-sling-api
- type: GitHubRepository
  url: https://github.com/apache/sling
- type: Documentation
  url: https://sling.apache.org/documentation.html
- type: Portal
  url: https://sling.apache.org/
- type: GettingStarted
  url: https://sling.apache.org/documentation/getting-started.html
- type: Blog
  url: https://sling.apache.org/news.html
- type: Support
  url: https://sling.apache.org/project-information/mailing-lists.html
- type: TermsOfService
  url: https://www.apache.org/licenses/
- type: FAQ
  url: https://cwiki.apache.org/confluence/display/SLING/
- type: SDKs
  url: https://search.maven.org/search?q=org.apache.sling
  title: Maven Central Packages
- type: Features
  data:
  - name: Resource-Oriented REST API
    description: Every JCR node is a REST resource accessible via URL with GET, POST, PUT, DELETE operations.
  - name: URL Decomposition
    description: Flexible URL decomposition into resource path, selectors, extension, and suffix for content negotiation.
  - name: SlingPostServlet
    description: Powerful POST servlet for content CRUD operations, supporting create, modify, delete, move, copy, and import.
  - name: Multi-Language Scripting
    description: Server-side rendering with HTL, JSP, Groovy, FreeMarker, Thymeleaf, and Rhino JavaScript.
  - name: OSGi Modular Architecture
    description: 300+ modular OSGi bundles with hot-deploy capability and dynamic configuration.
  - name: Resource Type Hierarchy
    description: Sling Resource Type system enables component inheritance and script resolution.
  - name: Event and Job Processing
    description: Distributed job queue and event system for asynchronous content processing.
  - name: Health Check Framework
    description: Extensible health check system for monitoring Sling instance components.
  - name: Replication and Distribution
    description: Content distribution bundles for replicating content between Sling instances.
- type: UseCases
  data:
  - name: Content Management Systems
    description: Build REST-based CMS solutions with JCR-backed content repositories.
  - name: Adobe Experience Manager
    description: Foundation framework for AEM digital experience platform implementations.
  - name: Headless CMS
    description: Serve structured JSON content via Sling's resource API for headless front-end applications.
  - name: Web Application Framework
    description: Build OSGi-based Java web applications with RESTful resource routing.
  - name: Digital Asset Management
    description: Manage and serve digital assets stored in JCR with metadata and rendition support.
- type: Integrations
  data:
  - name: Adobe Experience Manager
    description: Apache Sling is the foundational framework for Adobe Experience Manager (AEM).
  - name: Apache Jackrabbit Oak
    description: JCR implementation providing the content repository backend for Sling.
  - name: Apache Felix
    description: OSGi framework container that hosts Sling bundles and manages the service registry.
  - name: Apache Karaf
    description: OSGi runtime alternative for deploying Sling-based applications.
  - name: Maven
    description: Maven plugin (slingstart-maven-plugin) and Maven archetypes for Sling development.
  - name: Elasticsearch
    description: Search integration for indexing JCR content via Sling's indexing framework.
maintainers:
- FN: Kin Lane
  email: info@apievangelist.com