Zig

fx is an open-source coding-agent harness and command-line interface written in Zig by Vercel Labs. It is designed as a compact Unix-like alternative to a terminal IDE, with interactive and one-shot requests for inspecting and modifying repository code, running shell commands, and saving or resuming sessions. The agent supports skills, MCP tools, plugins, subagents, permission rules, and headless requests, and can be embedded natively or through WebAssembly. It is model-agnostic, supports local and cloud inference, is distributed under the Apache-2.0 license, and is marked experimental by its repository.

Z.ai's coding agent harness and AI programming workspace, offered through a desktop application, browser interface, and terminal agent. Its repository contains the client, backend services, shared React UI, Agent CLI, and runtime; the desktop client uses Electron, while the web and server components communicate through HTTP and WebSocket services. It supports remote project connections over SSH and WSL. The standalone command-line distribution combines a terminal UI, web server, and agent, and can run locally without Electron; the same command starts either the terminal interface or a browser-accessible web interface.

oh-my-pi is an open-source terminal coding agent and fork of Pi by Mario Zechner, with an IDE-oriented interface wired into the agent. It supports context-aware code edits, code search, language-server operations such as renames, debugging through debugger operations, persistent Python and Bun code-execution workers, web browsing, sub-agents, and MCP; the project describes support for dozens of model providers and includes built-in tools. It runs on macOS, Linux, and Windows, with installation options including a shell installer, Homebrew, Bun, Nix, and PowerShell.

Zeron is a local control layer for coding agents, including Claude Code, Codex, Cursor, Grok, Hermes, and Pi. Each device runs a small engine that stores agent sessions locally by default, without requiring an account or network connection. Optional synchronization lets users start an agent on one device and follow or control it from another; an always-on machine such as a VPS can keep agents running after a laptop is closed. The Linux installer starts a daemon that persists across reboots, while macOS users can install the desktop release or build from source. Zeron is licensed under the MIT License. The videos refer to the project as Comet.

An open-source reconstruction of the historically lost B programming-language compiler, developed by Angelo Papenhoff. Its B implementation uses two phases: `bc.b` compiles B source into an intermediate format, and `ba.b` converts that format into assembly; the first phase is mostly platform-independent apart from word size, while the second is platform-dependent. The repository also contains an initial C compiler used to bootstrap the B compiler, capable of producing PDP-11, amd64, MIPS32, and RISC-V 64 assembly, plus reconstructed variants for UNIX v1 on the PDP-11 and ITS on the PDP-10. The compilers generate the original threaded code, with the PDP-10 version using ASCII intermediate code. The project has been confirmed to compile itself on Linux amd64, Linux MIPS32, Linux RISC-V 64, 2.11BSD PDP-11, UNIX v1 PDP-11, and ITS PDP-10.