Digital Mars D Programming Language Compiler,

ABCL is an implementation of Common Lisp (CL) running in the JVM: it can run in the same JVM as your Java code, allowing full mixture of Lisp and Java code.
Being a full CL implementation, it runs many existing libraries and applications, such as Maxima, a computer algebra system....

Pool provides an Object-pooling API, with three major aspects:

1. A generic object pool interface that clients and implementors can use to provide easily interchangable pooling implementations.

2. A toolkit for creating modular object pools.

3. Several general purpose pool implementations....

Gnome Music Player Client is a graphical client for MPD, the Music Player Daemon. It supports plugins which can provide album and artist art, lyrics as well as additional functionality.

Alog is a logging framework for Ada. It aims to be straight forward to use and is easily extendable. It provides different facilities and log-level support.

Swift is a fully OOP Library for sending e-mails from PHP websites and applications. It does not rely on PHP's native mail() function which is known for using high server resources when sending multiple emails. Instead, Swift communicates directly with an SMTP server or a MTA binary to send mail quickly and efficiently....

EiffelStudio is an IDE for the Eiffel language (ECMA-367, ISO/IEC 25436, and ACM Software System Award 2006).

• Eiffel compiler
• Eiffel GUI editor
• Eiffel code browsing tool
• Eiffel diagram editor with round-trip,
• Eiffel refactoring tool...

Umbraco is a .NET-based CMS+ that let's all people involved in creating and managing web applications easily collaborate and have a clear view of can be and needs to be done.

For developers:
Full .net 4.0 integration, webservices, extendable XSLT, the list goes on. ...

Gammu (formerly known as MyGnokii2) is a cellular manager for various mobile phones/modems. It supports a wide variety of Nokia, Symbian, and AT devices (Siemens, Alcatel, Falcom, WaveCom, IPAQ, Samsung, SE, and others) over cables, infrared, or BlueTooth. It contains libraries with functions for ringtones, phonebook, SMS, logos, WAP, date/time, alarm, calls, and more (used by external applications like Wammu). It also includes a command line utility that can make many things (including backups) and an SMS gateway with full MySQL and PostgreSQL support from the PHP interface....

Modula-2 R10 language specification, grammar, syntax diagrams, standard library and reference compiler. The library is written in Modula-2. The reference compiler is written in C and it targets C and LLVM to allow bootstrapping on a wide range of architectures and operating systems....