Jcrop is the quick and easy way to add image cropping functionality to your web application. It combines the ease-of-use of a typical jQuery plugin with a powerful cross-platform DHTML cropping engine that is faithful to familiar desktop graphics applications.

A password hash is a hash digest of a password obtained using a one-way hashing algorithm (not to be confused with [password-encryption]). Password hashes differ from regular hash functions in that they are designed to be slow and consume CPU and/or memory resources in order to make them harder to crack.

A python context manager manages the context of a with statement. A context manager defines enter and exit hooks that get called as the code block under the with statement is entered and exited, respectively.

"A distributed denial of service attack (DDoS) occurs when multiple systems flood the bandwidth or resources of a targeted system, usually one or more web servers."

Carbon is Apple's previous application-development framework for Mac OS X for applications that needed to remain compatible with the Classic Mac OS.

A byte order mark (BOM) is a Unicode character used to signal the order of bytes in a text file or stream. As the BOM is U+FEFF, it makes it clear whether the high-order bytes are first (stream starts FE.FF) or second (stream starts FF.FE).

A method or function that takes a template string and arguments for that template and inserts these arguments into the template in an appropriate manner (programming-language-independent tag)

An error of language resulting from code that does not conform to the syntax of the programming language.

In iPhone development codesign deals with Provisioning Profiles, App Developer Certificate and device UDID.

QTextEdit is a class from the Qt Toolkit which provides a widget that is used to edit and display both plain and rich text. It is optimized to handle large documents and to respond quickly to user input.

The rpm spec file contains the information required by RPM to build a package.