There are 2 repositories under pluggable topic.
A pluggable API specification generator. Currently supports the OpenAPI Specification (f.k.a. the Swagger specification)..
Userge, Durable as a Serge
A pluggable layout and graphics system aimed at powering desktop publishing as well as storm-react-diagrams
pluggable Telegram Bot based on Pyrogram
Compressed append-only pluggable storage for PostgreSQL 12+
DIY full-stack+BI+DevOps in no time: tiny DSLs transpiled into maintainable codebases for selected technology stacks
Simple Calculator API using Spring Boot OSGi.
Madness embraces your project by including compatibility layer for selected APIs normally not available on .NET Framework target.
WebAssembly Transport Executables Runtime -- A more "Pluggable" Transport
Sample of Managed Extensibility Framework (MEF)
Generate data and views for URL/web link previews for iOS -- based on pluggable link preview API services
Don't waste your time writing redux and react boilerplate.
A feature-wise pluggable and/or entirely replicable Python Django web-application to centrally manage time or resource slots for events. Deployed at a state-level event for resource management.
Golang Http Digest Authentication Client
Django application to manage and create analogous calendar inlays