nnn is a full-featured terminal file manager designed for speed and efficiency. It's tiny (typically around 100KB), uses less than 3.5MB of resident memory, and requires virtually no configuration to get started.

Key capabilities include:

File management: Create, rename, duplicate, delete, copy, move, and archive files and directories with ease
Search and navigation: Instant filtering with search-as-you-type, fuzzy matching, regex support, and jump-to-entry functionality
Disk analysis: Built-in disk usage analyzer with block and apparent size options
Batch operations: Rename multiple files at once, cross-directory selection, and range selection
Extensibility: Rich plugin ecosystem for live previews, mounting disks, file diffing, and more
Multiple modes: Light mode, detailed view, disk usage analyzer, and file picker modes
Smart workflows: Type-to-navigate mode, contexts (tabs/workspaces), bookmarks, sessions, and remote mounts via sshfs or rclone
Integration: Works with (neo)vim plugins, supports clipboard sync, desktop openers, and custom commands

Performance-focused design means disk-IO sensitivity, no floating-point operations, and minimal screen refreshes. Privacy-aware with no unconfirmed data collection. Runs on Raspberry Pi, Termux (Android), Linux, macOS, BSD, Haiku, Cygwin, and WSL across any desktop environment or CLI-only setup. The tool uses sensible defaults while remaining fully hackable—compile in or out features based on your needs.