Ada Semantic Interface Specification for GNAT - Providing an up to date implementations of ASIS = Ada Semantic Interface Specification for GNAT. ASIS is a published international ISO standard (ISO/IEC 15291:1999).
AdaCL, Ada Class Library - Textfile search and replace (as Library and demo programs) Trace support. Protected and Task Queues. [Open source, GPL]
Adalog Components - Ada packeges including Debug, OS_Services, Protection (a kind of evolved semaphore), Variable_String. Also tools and adapplets (Java applets writing in Ada)
Adalog Debug - A package provides a sophisticated trace facility, especially valuable for multi-tasking programs. The child package Debug.Timing also provides utilities for measuring execution time, and the child package Debug.Assert provides utilities for checking that certain properties of program are actually met.
Ada-MPI - An Ada 95 binding to the Message Passing Interface (MPI).
AdaOpenGL - An Ada binding to OpenGL. [Open source, BSD License]
AdaSDL - A set of Ada (programming language) bindings, ports, and some original applications based on SDL (Simple DirectMedia Library). [Open source, LGPL]
AdaSockets - BSD sockets binding for the Ada programming language. [Open source, modified GPL]
AdaTCL - Quite dated Ada-TCL bindings. Normally, you'll want to use TASH instead.
ASL - The Ada Structed Library is a collection of container and semaphore types.
BLAS - An Ada 95 binding to the BLAS Fortran library, which contains routines for doing fundamental vector and matrix operations.
Florist - A POSIX Ada binding, including real-time extensions (this is the original page, download it where you download GNAT).
Gautier's 3D Engine - Real-Time 3D engine and game library, fully in Ada 95.
GLADE for GNAT - Providing an up to date implementations of Annex E (Distributed Systems) of the ISO standard ISO/IEC 8652:1995/COR1:2000 for GNAT. [Nothing to interface builder of the same name (GLADE)]
Glut - A window system independent toolkit for writing OpenGL programs.
GtkAda - An Ada95 graphical toolkit based on Gtk+, providing the complete set of Gtk+ widgets.
Libra - A general library for Ada '95 under Unix-like operating systems. It currently provides some basic data structures. Also it provide abstractions for NNTP and SMTP commands.
Open Image - A portable Ada 95 package hierarchy devoted to the Input/Output and manipulation of image (pictures) data. [GPL with same special exception as the GNAT run-time]
OpenToken - A series of Ada packages that allow simple creation of token analyzers (aka: lexical analyzers) in straight inline Ada code.
pyAda - An Ada 95 binding to the Python interpreter.
Tat - A thick Ada binding to the Tk windowing library.
Unzip Ada - A decompression library for .ZIP files without any compiler or operating system dependency.
XIA (XPath in Ada) - A native Ada implementation of the XPath 1.0 specification for XML DOM document querying. (Requires XMLAda from libre.adacore.com)