Jaeger

End‑to‑end distributed tracing for cloud‑native applications at scale

Jan

Run ChatGPT-style AI models locally with complete privacy

Janus

Lightweight Go‑based API gateway with granular control and analytics

Janus WebRTC Server

Scalable WebRTC gateway for real‑time media and data

Jenkins

Scalable automation server for continuous integration and delivery

Jitsu

Self‑hosted real‑time data pipeline, Segment alternative for modern data teams

Joomla

Open-source PHP CMS for building websites and applications

Joplin

Offline-first Markdown note-taking with end-to-end encrypted sync

jsDelivr

Global, free CDN delivering npm and GitHub assets at lightning speed

Juno

Decentralized serverless platform with zero operational complexity

JupyterHub

Scalable multi-user hub for Jupyter notebooks

JupyterLab

Next-generation interactive computing environment for notebooks, code, and data

Jupytext

Edit Jupyter notebooks as plain text scripts for seamless version control

K3s

Lightweight, production‑ready Kubernetes in a single <100 MB binary

Kamon

Unified tracing, metrics, and context propagation for JVM applications

Kanboard

Self-hosted Kanban project management software in maintenance mode

Kaneo

Fast, self-hosted project management platform that stays out of your way

Kanidm

Simple, secure identity management platform with everything built-in

Kanri

Modern offline Kanban board app for desktop productivity

Kap

Capture your macOS screen effortlessly with a sleek web‑based recorder

Karakeep

Self-hosted bookmark manager with AI tagging and full-text search

Katana

Fast, configurable web crawler with headless and JavaScript support

kbin

Decentralized Reddit‑style aggregator and micro‑blogging platform for the Fediverse

KeePassXC

Cross-platform password manager for secure offline credential storage