AppFuse is a full-stack framework for building web applications on the JVM. It was originally developed to eliminate the ramp-up time found when building new web applications. Over the years, it has matured into a very testable and secure system for creating Java-based webapps.

OpenLaszlo is a Rich Internet Application(RIA) platform which compiles applications written in a custom language called LZX (XML and JavaScript) to either Flash or JavaScript.

VisualWorks is a cross-platform implementation of the Smalltalk language.

Graceful-Degradation is the term used to describe the encapsulation of API specific calls such that your application can support the widest range of users. It's often used to provide the newest features to up-to-date devices while maintaining backward compatibility for older devices.

Callgrind is a profiling tool that records call history among functions in a program's run as a call-graph. By default, the collected data consists of the number of instructions executed, their relationship to source lines, the caller/callee relationship between functions, and the numbers of such calls. Optionally, cache simulation and/or branch prediction (similar to Cachegrind) can produce further information about the runtime behavior of an application.

For questions specific to Firebird 2.1. It is advisable to also tag with firebird.

Iron is a extensible web framework for Rust.

tf.exe is the command-line client for Team Foundation Server

QtScript is an ECMA262-compatible implementation of JavaScript. It is the successor of QSA (Qt Script For Applications), but is being phased out in recent Qt versions in favour of Google's V8 engine.