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qSheff is a wrapper for the qmail queue that scans email for viruses and spam. Infected messages are rejected before they reach the queue, so the server doesn't perform any job for them. After checking the message, it will wake the qmail queue. Some of the supported features: - Antivirus executing (ClamAV) - Header and body filtering - Subject filtering - Attachment blocking - Quarantine support - White/black lists - Single line logging for qmail - Basic DoS attack prevention - And much more...

Spfval validates SPF records. It does not check them via the network, this was intentionally omitted in favour of focusing purely on syntactically validating SPF records. Simply pass the validator a string and it will see if it validates as an SPFv1 or SPF-Classic record. If an error is found, it tries its best to report the error in question and the specific location in the record where the error occurred.

spmfilter-clamav is a plugin for spmfilter that enables spmfilter to check mails with the Clam AntiVirus open source toolkit for viruses. The major goal of this plugin is to provide an easy way for virus-scanning emails. If ClamAV detects malicious software like viruses the affected email is discarded by the plugin. Optionally notifications can be enabled to inform the recipients and sender (configurable) about the discarded message.

vpopmail provides an easy way to manage virtual domains and virtual accounts on a qmail mail server. Features: . Automates all qmail file modifications into documented command line programs . Support for named and IP-based virtual domains . NFS safe . dynamic directory creation for scalability using fill-in balanced 3 level tree . understands standard qmail .qmail directives . interacts well with qmailadmin for web-based administration, courier-imap for IMAP support, and sqwebmail for web-based mail.

Xfce4 Mailwatch Plugin is a multi-protocol, multi-mailbox mail watcher for the Xfce4 panel. Features * IMAP and Secure IMAP support * POP3 and Secure POP3 support * Local Mbox mailbox support * Local Maildir mailbox support * Local MH-Maildir mailbox support * GMail support * Fully multithreaded design: no panel lockups * Informative new-message breakdown in tooltip * Ability to run program on new messages or button click * Informative logger to help track down mail connection problems

The system Risa/Asir is a general computer algebra system. It performs arithmetics in various rings and fields, factorization, and Groebner basis computations. It can call outer modules complient to the OpenXM protocols. The asir user language is like C. The most recent source distribution from Kobe University can be found at http://www.asir.org/ Risa/Asir was originally developed at Fujitsu Research Laboratory. Fujitsu Research Laboratory holds the copyright of Risa/Asir. See the COPYRIGHT file in the source distribution.

Emc2 is a portable, interactive, graphical editor of two-dimensional mesh geometries. It can create and modify geometries (as in CAD), and define line discretizations, subdomains, and reference numbers (to take into account boundary conditions and material properties). Grid and Delaunay-Voronoi meshes composed of triangles or quadrilaterals can be regularized, rotated, and modified via the addition, removal, or moving of vertices. It is suggested that users also install the math/bamg port.

fxt is a library package (coming as C++ source code) containing various algorithms for: - Fast Fourier Transform (FFT) incl. real-vlued, - multidimensional and weighted variants. - Fast Hartley Transform (FHT) - Number Theoretic Transform (NTT), Fast Walsh Transform. - Convolution (cyclic, linear and weighted), - correlation and power spectrum. - Fast Haar Transform, Fast Wavelet Transform - Mass storage convolution and fast multiplication routines. - Sine- and cosine transform (DCT, DST), Fast Z-Transform (FZT)

Givaro is a C++ library for arithmetic and algebraic computations. Its main features are implementations of the basic arithmetic of many mathematical entities: prime fields, extension fields, finite fields, finite rings, polynomials, algebraic numbers, arbitrary precision integers and rationals (via C++ wrappers over gmp). It also provides data structures and templated classes for the manipulation of basic algebraic objects, such as vectors, matrices (dense, sparse, and structured), univariate polynomials, and recursive multivariate polynomials.

igraph is a free software package for creating and manipulating undirected and directed graphs. It includes implementations for classic graph theory problems like minimum spanning trees and network flow, and also implements algorithms for some recent network analysis methods, like community structure search. igraph contains functions for generating regular and random graphs, manipulating graphs, assigning attributes to vertices and edges. It can calculate various structural properties, includes heuristics for community structure detection, supports many file formats.