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Cybersecurity courses, labs and guided training paths.

Online courses organized one at a time for working adults.

Home food-growing education with courses and growing guides

Civil engineering exam preparation with review courses, practice exams, videos and study resources.

Coding courses and paths organized by technical goal

A course hub for global-health professionals

Self-hosted database observability that links node health to slow queries.

Cloud learning and certification preparation with courses, practice tests and hands-on labs.

A self-hosted browser notebook that keeps Markdown notes, links, comments, and history together.

Free, self-hosted group chat with rooms, direct messages, and no recurring subscription.

Run a self-managed time-series database for recent metrics and event data.

Room-based document collaboration with permissions, version history, and cloud or self-hosted deployment.

Sentry-SDK-compatible error monitoring, available hosted or self-hosted.

Track tasks, sprints, schedules, workloads, and project costs in one work-management system.

Self-host a tag-based time tracker with calendar and dashboard views.

Run repository builds, tests, and release steps in workflows defined by CircleCI configuration.

Instrument LLMs, agents, vector databases, and frameworks with OpenTelemetry-native AI monitoring.

A self-hosted note library with Markdown, boards, daily notes, and shared workspaces.

Local Markdown notebooks with backlinks, search, and optional self-hosted encrypted sync.

Store and query observability telemetry in a columnar data lake with SQL and PromQL.

Package open fonts for self-hosted web applications.

Keep asynchronous team conversations organized by channel and named topic.

Track project issues with configurable fields, notifications, and role-based access.

A privacy-focused collaborative office suite with real-time rich-text documents and controlled sharing.