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iso-8601-date-formatter
A Cocoa NSFormatter subclass to convert dates to and from ISO-8601-formatted strings. Supports calendar, week, and ordinal formats.impluse-hfs
A tool for converting HFS (Mac OS Standard) volumes to HFS+ (Mac OS Extended) format.IPA-icon-QLGenerator
A Quick Look generator plug-in for IPA (iPhone/iPad app) filesVerbalExpressions-for-Objective-C
A more verbose/readable way to write regular expressionshashvis
Terminal-based visualizer for hashes/digests and other hex strings.AffineTransformTest
Test app for playing with the numbers in an affine transformation matrix to see how different values affect its transformation of drawing.programmers-killswitch
A tool to easily kill Xcode and Instruments with a single hotkey-press when your system goes into paging hell.libtiming
A library to make it really easy to time multiple implementations against each other, in parallel.Business-Card-Maker
An app to generate PDFs for printing business cards.Rules-of-Communication
Principles of argument/debate/conversation/thought exchange, inspired by a tweet by Mike Lee.PRHFractionNumberFormatter
An NSNumberFormatter subclass that converts numbers to and from strings representing fractions.pb
Powerful command-line interface to macOS Pasteboard APIsHotkey-List
An OS X app to list the system's hotkeys (as returned by CopySymbolicHotKeys).PRHLineEnumerator
An NSEnumerator subclass that yields lines from a string.CACardAnimationTest
Test app implementing the dealing of cards using Core Animation.Gist-to-CodeRunner
An OS X service that takes any Gist URL, downloads it, and opens the main file in CodeRunner.PRHDataURL
A category on NSData for the creation of data: URIsCASlowpoke
Automatically slow down all Core Animation animations when the Shift key is downPNG-DPI
A tool for setting the resolution metadata of any PNG imageicon-extract
A tool to extract icon resources from old Mac apps and other files and export them to modern IconFamily (.icns) files.Parallel-copy-and-verify
Multithreaded tools for copying devices and verifying the copy.listdir
A fast, mostly-constant-memory tool to list all of the files within a directory, like ls -Rf.PRHVector
A featureful vector class for Objective-CPRHSheet
A reusable subclass of NSPanel that makes deploying sheets much saner.Docset-Opener
A trampoline app for opening Xcode documentation sets in a web browser.icnsdump
Lists all element types and pixel-sizes in an IconFamily (.icns) file.PRHXMLParser
A simple block-based XML parser class for Cocoa.gps_strip
OS X command-line tool to strip GPS (location) info from image files.md5_rsrc
Hash resource forks of files transported between modern and Classic Mac OSQLDataURLTest
Test app attempting to pass data: URLs to Quick Look. Also, category for easy data: URL creation (now moved to separate repo PRHDataURL).SpeedDial
A macOS app to sit in the menu bar and provide easy access to a few frequently-used VNC (screen sharing) URLs.TimeMachineGrowler
An app to post Growl notifications when Time Machine starts and finishes backing up.BZSoundboard
A 32-bit macOS app that provides a grid of buttons you can use to play sounds of your choosing.PRHDrawWithASCII
Draw shapes in Cocoa with ASCII art!piglatin
A command-line Pig Latin filter for Mac OS X.Journal
Example of using Core Data to write something that works like a Twitter client, but isn't one.cicn-Extractor
A document-based OS X app to extract 'cicn' resources from classic Mac apps.exch
Command-line tool to exchange the contents of two files on HFSFolder-Embosser
Test app demonstrating CIFilterGenerator by embossing a template image onto the generic filter icon, for output that looks like Lion's special folder iconsproject-framework
A framework for reading Xcode projects.makemake
CLI tool to automate creation of Makefilescmgrid
A printable, two-dimensional ruler gridMake-RAM-Disk
A simple Mac app to create a RAM disk.QLFolderBrowser
Test app demonstrating use of Quick Look in an application.slack-export-filter
Python script that enables searching Slack archive exports.BindingConvenienceTest
Testing how easy it is to create custom bindable properties nowadays.sizeUpDirectory
Demonstrating CFURLEnumerator, NSDirectoryEnumerator, and separation of interface (and its client) from implementation.PRHClickDragRecognizer
A gesture recognizer for Mac OS X Cocoa applications, to simplify telling clicks from drags.csv_tools
A collection of tools I've needed for various CSV-related tasks.diff-colorize
A Python tool to present diffs in a terminal as colorized, interleaved output.AsyncDigestTransformNoWorkie
SecDigestTransform can't be used asynchronously.WindowViewTest
Test app demonstrating using HITheme to draw a windowโwithin a Cocoa view.DirtyTextMatrixTest
NeverHeardOfThatObject
Test app demonstrating a bug in which NSArray does not send isEqual: to its objects in response to indexOfObject:.zpromptheaders
A Git status prompt header for zshI-have-many-names
Application with a different name in each place where the application's name appearsCompareCharacterSetsTest
Test app demonstrating failing equality testing between equal NSCharacterSet objects.dndroll
Command-line dice roller, in CocoaFilter-Browser
iOS app for browsing the selection of Core Image filtersStarTest
ForceFeedbackTest
Test app for OS X demoing the Force Feedback framework.generate-card-for-URL
Implementation of generating simple HTML cards from webpages.peril-of-BOOL
A test app showing why converting values to BOOL is risky, and why converting them to C99 bool is better.NumbWindow
Test app for a weird bug where having a window set as Release When Closed results not in it getting deallocated, but in it going numb.MainWindowNibUniversalCocoaTouchApp
A simple Cocoa Touch Universal test app that demonstrates creating the main window in a nib rather than in code.Love Open Source and this site? Check out how you can help us