General purpose TLS and crypto library

A code-searching tool similar to ack, but faster.

Higher level programming in C

πfs - the data-free filesystem!

ZipArchive is a simple utility class for zipping and unzipping files on iOS, macOS and tvOS.

The Objective-C HTTP library that Apple should have created, seriously.

The DIME resolver library and command line utilities.

A new language for the web

Redland librdf RDF API and triple stores

Blog Code

An implementation of XPath 3.0 in Objective-C/Cocoa

10.7 Compatible version of this: http://code.google.com/p/mac-soapclient/

XML Validation/XPath Visualization plug-in for TextMate (validation via DTD/XSD/RNG/Schematron)