ProBrowse

This is an early version under active development. It may contain bugs that could corrupt your disk images. Always backup your disk images before using ProBrowse!

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What is ProBrowse?

ProBrowse is a modern macOS dual-pane file manager for Apple II disk images, bringing vintage computing into the 21st century.

Features

• Dual-Pane Browser - Work with two disk images simultaneously
• File Inspector - View file contents with Cmd+I or context menu
• Native ProDOS Support - Read and write ProDOS disk images natively in Swift
• DOS 3.3 Support - Full read and write support for DOS 3.3 disk images
• UCSD Pascal Support - Read UCSD Pascal volumes (read-only)
• ShrinkIt Archives - Browse, extract, and create NuFX archives (.shk, .sdk, .bxy)
• Binary II Archives - Read and write Binary II archives (.bny, .bqy)
• Drag & Drop - Copy files between disk images or import from Finder
• Change File Type - Right-click to modify file type and aux type
• Complete File Type Database - Recognizes 200+ ProDOS file types with proper names
• Graphics Preview - View Apple II graphics (HGR, DHGR, SHR, APF) directly
• Font Preview - Apple IIgs fonts and Apple II hi-res screen fonts
• Icon Preview - Apple IIgs Finder icons with 16-color palette and transparency
• BASIC Viewer - Syntax-highlighted Applesoft and Integer BASIC listings
• Merlin Viewer - 6502 assembler source with syntax highlighting
• Disassembler - 6502 and 65816 machine code disassembly
• AppleWorks Viewer - Classic and GS word processor, database, and spreadsheet
• Teach Viewer - Apple IIgs Teach documents with fonts, styles, and colors
• Date/Time Support - Displays creation and modification dates from ProDOS
• Modern UI - Clean SwiftUI interface with resizable columns
• Export Capability - Extract files to your Mac

Supported Disk Image Formats

Format	Extension	Read	Write
ProDOS Order	.po	✅	✅
DOS Order	.do	✅	✅
Universal 2IMG	.2mg	✅	✅
Hard Disk Volume	.hdv	✅	✅
Generic DSK	.dsk	✅	✅
UCSD Pascal Volume	.vol	✅	❌

Supported Archive Formats

Format	Extension	Read	Write	Description
ShrinkIt Disk	.sdk	✅	✅	Compressed disk images
ShrinkIt Archive	.shk	✅	✅	Compressed file archives
Binary II + ShrinkIt	.bxy	✅	✅	Binary II wrapped ShrinkIt
Binary II	.bny, .bqy	✅	✅	Binary II archives
Gzip	.gz	✅	❌	Gzip compressed files
ZIP	.zip	✅	❌	ZIP archives

All archive formats are handled natively - no external tools required.

Supported File Systems

File System	Read	Write	Notes
ProDOS	✅	✅	Full support including subdirectories
DOS 3.3	✅	✅	Full support
UCSD Pascal	✅	❌	Read-only
ShrinkIt Archives	✅	✅	Native LZW compression
Binary II Archives	✅	✅	Full support

Requirements

• macOS 14.0 (Sonoma) or later
• Apple Silicon or Intel Mac

Current Limitations

• UCSD Pascal volumes are read-only
• Gzip and ZIP archives are read-only
• Beta quality - expect bugs!

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Quick Start

1. Open two disk images (left and right panes)
2. Browse files with full directory support
3. Press Cmd+I to inspect any file (view BASIC listings, graphics, hex dump)
4. Drag & drop files between images
5. Export files to your Mac
6. View Apple II graphics inline

Building

Requires Xcode 15+ and macOS 14.0+

open ProBrowse.xcodeproj

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Development

Built with Swift and SwiftUI for modern macOS.

License: MIT

Status: Active development - contributions welcome!

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Remember: Always backup your disk images before using beta software!