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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.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.Web2PDF
App I wrote back in 2006 for converting webpages to single-huge-page PDF documents.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 window—within 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