Docker containers, images, Dockerfiles and container best practices.
Stalwart replaces Postfix + Dovecot + Rspamd + a dozen config files with one Rust binary. Bulwark gives it a modern JMAP webmail UI. Together they're the self-hosted email stack for 2026 — private, fast, and finally not painful to run.
Docmost is the genuinely open source Confluence and Notion alternative — real-time collaborative editing, spaces, permissions, built-in Drawio and Mermaid diagrams, and no OIDC provider required just to log in. Self-host free, no seat fees, your data on your server.
Mattermost is the self-hosted Slack alternative that your organization actually owns — channels, threads, file sharing, DevOps integrations, Playbooks for incident response, and now sovereign AI. MIT-licensed, runs as a single binary, unlimited users on the free tier.
Open WebUI is the self-hosted ChatGPT alternative with 139k+ stars — connects to Ollama for local models, any OpenAI-compatible API, Claude, and more. RAG built in, multi-user auth, Python functions, voice chat. One interface for every LLM you run.
Uptime Kuma is the self-hosted monitoring dashboard your team will actually use. Globalping gives it a global probe network so you know whether your service is down everywhere, not just from your server. Here's how both tools work and why they're better together.
Windmill turns scripts into APIs, webhooks, scheduled jobs, and auto-generated UIs — without the infrastructure overhead. AGPLv3 open source, 13x faster than Airflow, self-hostable on Docker or Kubernetes. The developer platform that replaces a shelf of internal tools.
OpenRAG is the single-command RAG platform from IBM and Langflow — Docling for document parsing, OpenSearch for semantic search, Langflow for visual workflow orchestration, and a built-in MCP server so your AI tools can query your knowledge base directly. Zero RAG plumbing required.
Gitea is the lightweight self-hosted GitHub alternative — single Go binary, 55k+ stars, GitHub Actions compatibility, runs on a Raspberry Pi. There's also Forgejo, its community fork that many now recommend instead. Here's what both are and when to pick which.
Fleet is the open source MDM that manages macOS, Windows, Linux, iOS, and Android from one platform — with GitOps workflows, osquery-powered visibility, and no vendor lock-in. Here's what makes it different from Jamf and Intune.