OpenIsis provides a library and tools to access CDS/ISIS databases, which are mostly used for bibliographic data (ISO2709, Z39.50) but also well suited for other catalogues due to the very flexible indexing mechanism. Based on a C library, there are also bindings for Perl and Java (Tcl to come).
XPA Messaging provides seamless communication between Unix programs, including X, Tcl/Tk, and generic select() loops. It provides an easy way for users to communicate with these XPA-enabled programs by executing XPA client commands from a shell. Because XPA works both at the programming level and the shell level, it is a powerful tool for unifying any environment, offering flexibility in choosing the best level at which to access XPA services. A program becomes an XPA-enabled server by defining named points of public access through which data and commands can be exchanged with other client programs (and users). Using standard TCP sockets, XPA supports both single-point and broadcast messaging to and from these servers.
Tkgeomap is a set of extensions to the Tcl/Tk scripting language for accessing, manipulating, and displaying geographic data. The extensions add commands that perform basic cartographic calculations, define and use projections, store data in lines and as named places, and display the data in canvas widgets.
Tk Drag and Drop is an extension for Tcl/Tk to add native drag and drop capabilities to the Tk toolkit. It is designed for Tk versions 8.3.3 and higher. Native drag and drop are supported under Microsoft Windows (XP, Vista, 7), Mac OS X Leopard (Cocoa framework), and Linux (XDND, drag support missing).
nsmhash is an AOLserver module and Tcl package that implements an interface to the mhash library (libmhash). It supports hash, hmac, and key generation algorithms (such as SHA1, MD5, MCRYPT, and S2K_SALTED), and it also supports sharing with nsv_* commands. It was tested with AOLserver 3.4.x and 4.0.x and Tcl 8.4.
nsmcrypt is an AOLserver module and standard Tcl library that implements an interface to the mcrypt library (libmcrypt). It supports cipher algorithms (such as blowfish, des, or rijndael-256), cipher modes (such as cbc, cfb, ncfb, or stream), and also supports sharing with nsv_* commands. It was tested with AOLserver 3.4.x and 4.0.x and Tcl 8.4.