Bat vs Fd

Bat and Fd are both popular developer tools tools. This page compares their internal architecture, technology stack, data flow patterns, and system behavior — based on automated structural analysis of their source code. They share 2 technologies including clap, regex.

sharkdp/bat

57,684
Stars
Rust
Language
10
Components
1.1
Connectivity

sharkdp/fd

42,085
Stars
Rust
Language
10
Components
1.7
Connectivity

Technology Stack

Shared Technologies

clap regex

Only in Bat

syntect git2 nu-ansi-term console serde minus

Only in Fd

ignore crossbeam-channel lscolors jiff tikv-jemallocator tempfile

Architecture Layers

Bat (4 layers)

CLI Application
Command-line interface, argument parsing, and user interaction
Core Library
Main bat library with PrettyPrinter API and Controller for file processing
Assets & Syntax
Syntax highlighting assets, theme management, and language detection
Output & Formatting
Terminal output, paging, decorations, and line wrapping

Fd (5 layers)

CLI Interface
Command-line argument parsing and shell completion
Core Logic
Configuration management and directory traversal coordination
Filtering System
File type, size, time, and ownership filtering components
Execution Engine
Command execution for found files with parallel processing
Output Formatting
Colorized output, formatting templates, and hyperlinks

Data Flow

Bat (5 stages)

  1. Input Processing
  2. Syntax Detection
  3. Highlighting
  4. Decoration
  5. Output Rendering

Fd (5 stages)

  1. Parse CLI
  2. Build Config
  3. Walk Directories
  4. Apply Filters
  5. Format Output

Code Patterns

Unique to Bat

lazy loading builder pattern input abstraction feature gates asset serialization

Unique to Fd

command pattern filter chain template processing lazy evaluation

When to Choose

Choose Bat when you need

  • Unique tech: syntect, git2, nu-ansi-term
  • Loosely coupled, more modular
View full analysis →

Choose Fd when you need

  • Unique tech: ignore, crossbeam-channel, lscolors
  • Tighter integration between components
View full analysis →

Frequently Asked Questions

What are the main differences between Bat and Fd?

Bat has 10 components with a connectivity ratio of 1.1, while Fd has 10 components with a ratio of 1.7. They share 2 technologies but differ in 12 others.

Should I use Bat or Fd?

Choose Bat if you need: Unique tech: syntect, git2, nu-ansi-term; Loosely coupled, more modular. Choose Fd if you need: Unique tech: ignore, crossbeam-channel, lscolors; Tighter integration between components.

How does the architecture of Bat compare to Fd?

Bat is organized into 4 architecture layers with a 5-stage data pipeline. Fd has 5 layers with a 5-stage pipeline.

What technology does Bat use that Fd doesn't?

Bat uniquely uses: syntect, git2, nu-ansi-term, console, serde. Fd uniquely uses: ignore, crossbeam-channel, lscolors, jiff, tikv-jemallocator.

Explore the interactive analysis

See the full architecture maps, code patterns, and dependency graphs.

Bat Fd

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Compared on March 16, 2026 by CodeSea. Written by .