Simple Apps

A collection of simple, focused macOS utilities.

Built with native Swift and SwiftUI. Each app is 1–2 MB — the Electron equivalent would be 80–120 MB. Your disk space is safe here.

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Viewer Toolbox

A macOS menu bar app that manages all viewer apps, shared settings, and keeps everything up to date.

Buy on Gumroad — $20 v1.4.0

Features

• Quick access to all viewer apps from the menu bar
• Install, update, and launch viewers in one place
• Shared settings: font, theme, and editor preferences sync across all viewers
• Automatic updates via Sparkle

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TextViewer

A simple, native macOS app for viewing plain text and code files with syntax highlighting.

Download TextViewer.dmg v1.1.1

Requirements

• macOS 13.0 or later
• Universal binary (Intel + Apple Silicon)

Features

• Syntax highlighting for many languages
• Line numbers and word wrap
• Configurable font and theme
• Light/dark mode support

Installation

1. Download and open the DMG
2. Drag TextViewer to your Applications folder

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JSONViewer

A simple, native macOS app for viewing JSON files — like Preview for images, but for .json files.

Download JSONViewer.dmg v1.5.1

Requirements

• macOS 13.0 or later
• Universal binary (Intel + Apple Silicon)

Features

• Syntax highlighting: color-coded keys, strings, numbers, booleans, and null values
• Expand/collapse objects and arrays with click
• Error detection with line highlighting for invalid JSON
• One-click copy to clipboard
• Light/dark mode support

Installation

1. Download and open the DMG
2. Drag JSONViewer to your Applications folder

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MarkdownViewer

A simple, native macOS app for viewing Markdown files — like Preview for images, but for .md files.

Download MarkdownViewer.dmg v1.9.1

Requirements

• macOS 13.0 or later
• Universal binary (Intel + Apple Silicon)

Features

• Full Markdown support: headers, bold, italic, links, code blocks, lists, tables, images, strikethrough, task lists
• Syntax highlighting for fenced code blocks
• Export as PDF
• Dark mode support
• Open files via File menu, double-click, or drag & drop
• Copy raw Markdown or formatted rich text

Installation

1. Download and open the DMG
2. Drag MarkdownViewer to your Applications folder

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3DViewer

A simple, native macOS app for viewing 3D model files — like Preview for images, but for 3D models.

Download ThreeDViewer.dmg v1.4.1

Requirements

• macOS 13.0 or later
• Universal binary (Intel + Apple Silicon)

Features

• Multiple format support: STL, OBJ, USDZ, PLY, and DAE files
• Interactive controls: orbit, pan, and zoom
• Wireframe mode toggle for inspecting model structure
• Auto-centering and scaling for optimal viewing
• Grid floor for spatial reference
• Light/dark mode support

Installation

1. Download and open the DMG
2. Drag ThreeDViewer to your Applications folder

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YAMLViewer

A simple, native macOS app for viewing YAML files with syntax highlighting and validation.

Download YAMLViewer.dmg v1.2.1

Requirements

• macOS 13.0 or later
• Universal binary (Intel + Apple Silicon)

Features

• Syntax highlighting for YAML
• Validation with error reporting
• Configurable font and theme
• Light/dark mode support

Installation

1. Download and open the DMG
2. Drag YAMLViewer to your Applications folder

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CSVViewer

A simple, native macOS app for viewing CSV and TSV files in a clean table format.

Download CSVViewer.dmg v1.1.1

Requirements

• macOS 13.0 or later
• Universal binary (Intel + Apple Silicon)

Features

• Table view for CSV and TSV data
• Column sorting and resizing
• Configurable font and theme
• Light/dark mode support

Installation

1. Download and open the DMG
2. Drag CSVViewer to your Applications folder