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Visual Tcl is a freely-available, high-quality application development environment for UNIX, Window$ and Macintosh platforms. Visual Tcl is written entirely in Tcl/Tk. No extensions. Tcl7.6 and Tk4.2 or later are required.

wxGlade is a GUI designer written in Python with the popular GUI toolkit wxPython, that helps you create wxWidgets/wxPython user interfaces. At the moment it can generate Python, C++ and XRC (wxWidgets' XML resources) code.

XParam is a general-purpose tool for parameter handling in C++. It allows object serialization and deserialization in a format that is human-readable and -writeable, and is unaffected by issues of word-size and endianity. The XParam format is also not confused by objects containing pointers: it saves the objects in such a manner that their conceptual contents can be restored perfectly. For this reason, XParam provides an excellent tool for cross-program and cross-platform communication. In future, XParam may also be extended to allow cross-language communication, but for now it is only available in C++.

Paraphrasing the website: The ZThread package is an advanced object-oriented, cross-platform, C++ threading and synchronization library. It provides a high level abstraction of the native threading mechanisms to offer a great deal of flexibility and control. ZThread features interruptible Thread and Runnable objects for C++, control objects and implementations of concurrency design patterns. This includes semaphores, mutexes, condition variables as well as other more complex components. ZThread implementations are provided for POSIX and Win32 platforms.

The zzip library provides read access to zipped file in a zip-archive. It is based solely on free algorithms provided by zlib and can transparently access files being either real files or zipped files with the same file path argument.

This is a hash table, implemented in C, supporting constant-time add/find/remove of C structures. Any structure having a unique, arbitrarily-typed key member can be hashed by adding a UT_hash_handle member to the structure and calling these macros.

ddclient is a Perl client used to update dynamic DNS entries for accounts on many dynamic DNS services.

DNRD is a proxy DNS daemon. It supports several forward servers for redundancy and/or load-balancing. DNS queries for specific domains can be forwarded to a specific group of DNS servers (with redundancy and load balancing) for that domain. It is useful for VPNs and also good support for offline and dialup sites.

The dnsutl package is a collection tools to make administering DNS easier. These include programs for: * Generating the reverse DNS mapping by using the DNS forward mapping. This is useful for producing a self-consistent DNS configuration. * Generating the /etc/ethers file by using a bogus record type. * Generating the /etc/hosts file by using the DNS forward mapping. * Generating the /etc/bootptab file by using the MAC and IP information. * Generating the /etc/netgroup file by using the DNS forward mapping. * Generating the Sun /etc/bootparams file by using the MAC and IP information. * Checking the new-style /etc/named.conf files for self-consistency. * Checking the old-style /etc/named.boot files for self-consistency. * Generating the DNS forward mapping by using the /etc/hosts file. This could be a first step to configuring your DNS server. * Generating the /etc/dhcp.conf file by using the MAC and IP information. All of these programs are both faster than shell scripts, and more robust when faced with all the peculiar semantics of DNS resource files. They even understand the $include directive.

getdns is a modern asynchronous DNS API. It implements DNS entry points from a design developed and vetted by application developers, in an API specification edited by Paul Hoffman. With the development of this API, we intend to offer application developers a modernized and flexible way to access DNS security (DNSSEC) and other powerful new DNS features; a particular hope is to inspire application developers towards innovative security solutions in their applications.