There are 3 repositories under sling topic.
Adobe Experience Manager links, cheat sheets and solutions to common problems.
AEM Code Samples repository
The AEM Groovy Console provides an interface for running Groovy scripts in the AEM container. Scripts can be created to manipulate content in the JCR, call OSGi services, or execute arbitrary code using the CQ, Sling, or JCR APIs.
Rights and roles management for AEM made easy
SonarQube plugin with set of rules detecting possible bugs and bad smells specific for AEM development.
Search Web Console Plugin for Apache Felix
Apache Sling Whiteboard - testing ground for new ideas
Stream and Download your favourite TV series/Movies on Ubuntu/Linux & Windows Desktop
The AEM Library provides a sturdy foundation for bootstrapping and simplifying for Adobe Experience Manager projects.
Build rapidly Sling applications using Gradle Build System
Apache Sling OSGi Feature Model
Sling/AEM components built with React and Kotlin. If you're using AEM you probably want to switch to aem-react-poc branch, it uses the similar idea but saves AEM authoring functionality.
Apache Sling Content Package to Feature Model Converter