Development

Complete guide to localhost:4891 - the default port for the GPT4All local API server.

Complete guide to localhost:11434 - the default port for Ollama, the popular open-source tool for running local LLMs.

The CLI coding agents worth using in 2026, with the Gemini CLI -> Antigravity CLI handover, OpenAI Codex on GPT-5.5, Cursor CLI's Cloud Handoff, OpenCode's open-source surge, and where Aider still fits.

Master SSH port forwarding with practical examples for local, remote, and dynamic tunneling. Learn how to securely access databases, bypass firewalls, and debug applications.

Understand `127.0.0.1`, loopback addresses, and how they work in networking. Learn why localhost points to `127.0.0.1` and how to use loopback for development and testing.

Discover the best AI coding tools in 2026. Compare GitHub Copilot, Cursor, Windsurf, Claude Code, and open-source alternatives. Find the perfect AI assistant for your development workflow.

Complete guide to localhost:8000 - the popular port used by Django, Python HTTP servers, and various development frameworks.

Complete guide to localhost:5432 - the default port for PostgreSQL database server, connections, and development workflows.

Complete guide to localhost:5173 - the default port for Vite development server used by Vue.js, React, and modern frontend frameworks.

Complete guide to localhost:4200 - the default port for Angular development server used by Angular CLI and modern frontend development.