CodeCrafters

Coder is a self-hosted platform for cloud development environments and AI coding agents. It defines workspaces with Terraform and can provision them on EC2 virtual machines, Kubernetes pods, Docker containers, and other infrastructure, connecting users through a secure WireGuard tunnel and automatically shutting down idle resources. Coder Agents runs a native AI coding-agent loop in the control plane on the operator's infrastructure. It supports models from Anthropic, OpenAI, Google, Amazon Bedrock, and self-hosted providers without placing LLM credentials in workspaces, while providing centralized model governance, cost tracking, identity on actions, and audit logging. Workspaces can be accessed through existing IDEs including VS Code and JetBrains products.

camelAI is an AI coding assistant platform built on Cloudflare Workers and Durable Objects. Each chat thread runs a coding agent in its own persistent workspace, retaining chat state and project files while providing workspace-aware tools. The platform connects to APIs, databases, email, Slack, Discord, and other services; supports application builds, notebook analysis, and SQL execution in isolated short-lived sandboxes; and provides previews and publishing through Workers for Platforms. Its agent harness is built on pi's lower-level agent-loop and state-management libraries. The agent uses native file tools and writes JavaScript rather than shell commands; Code Mode executes that JavaScript in fresh V8 isolates with explicit platform and connection methods. Project files are stored in WorkspaceFilesystem Durable Objects, using Durable Object SQLite for small files and R2 for larger ones, while Cloudflare Artifacts provides Git history. Linux sandbox containers are reserved for jobs requiring them, including builds, notebook analysis, and database queries, and credentials remain outside the execution sandbox. The platform can use Anthropic, OpenAI, OpenRouter, Bedrock, and custom model endpoints. Its repository is released under the MIT License and includes local development setup using Node.js, Bun, and a Cloudflare account.

Everything Claude Code is a Claude Code plugin and toolkit containing configurable agents, skills, slash commands, rules, hooks, contexts, MCP server configurations, scripts, and tests for AI-assisted software development. Its agents delegate tasks such as planning, code review, security review, testing, and build-error resolution. Skills define workflows including test-driven development, security review, continuous learning, and verification; hooks run on Claude Code tool or session events to load and save context, suggest compaction, and evaluate sessions; and rules provide persistent guidance for security, coding style, testing, Git workflow, delegation, and performance. Node.js scripts support Windows, macOS, and Linux and detect a project's preferred package manager from environment settings, project configuration, package.json, lock files, or global configuration. The repository can be installed as a Claude Code plugin or copied into Claude configuration directories manually. It includes a Node.js test suite and is distributed under the MIT license.

Build Your Own X is a curated GitHub repository of step-by-step guides for recreating familiar technologies from scratch as programming exercises. Its index organizes tutorials covering databases, operating systems, programming languages, Git, web servers, neural networks, command-line tools, games, browsers, distributed systems, and other software categories, with implementations and guides in languages including Python, JavaScript, Go, C++, Java, and others.