neo

neo is a terminal-native, extensible code editor written in Go.

It combines a custom text buffer engine, syntax highlighting, tabbed editing, dockable panels, built-in terminal emulation, and Git tooling in a single TUI application.

Highlights

• Fast text editing core with undo/redo, selections, multi-line operations, and bracket-aware navigation.
• Extension-based architecture for commands, keybindings, menus, and panels.
• Syntax highlighting powered by Chroma with configurable themes.
• Integrated autocomplete (document words, language keywords, snippets, and paths).
• Search stack: incremental find, replace, search in open tabs, and find-in-files.
• Code folding with fold levels, fold region detection, and open/close controls.
• Git integration: log view, working/staged diffs, and ref-to-ref diff.
• Workspace UI tooling: file tree, quick open, tab switcher, markdown preview, search results panel.
• Session persistence (restore tabs, cursor position, scroll state) and MRU history.
• External file change watching with reload prompts.
• Image viewing support, including Sixel rendering helpers for capable terminals.

Git Log / Diff and many other features

Getting Started

Prerequisites

• Go 1.25+
• A terminal with mouse support recommended
• git on PATH (for Git features)

Build

go build -o neo .

Run

# Open editor
./neo

# Open a file directly
./neo path/to/file.go

# Pick a syntax theme
./neo --theme dracula path/to/file.go

Common Shortcuts

• Ctrl+N: new file
• Ctrl+O: open file
• Ctrl+S: save
• Ctrl+W: close tab
• Ctrl+Q: quit
• Ctrl+P: quick open
• Ctrl+F: find
• Ctrl+H: replace
• Ctrl+Shift+F: find in files
• Ctrl+Space: autocomplete
• Ctrl+B: toggle file tree
• `Ctrl+``: open terminal tab
• Ctrl+Shift+G: Git log
• F2: toggle bookmark
• F9: open settings

Configuration

neo stores user settings as JSON.

• Windows: %APPDATA%/neo/settings.json
• macOS: $HOME/Library/Application Support/neo/settings.json
• Linux: $XDG_CONFIG_HOME/neo/settings.json (or $HOME/.config/neo/settings.json)