Alarm Pinger (apinger) is a little tool which monitors various IP devices by simple ICMP echo requests. Unlike most Perl or shell script tools, it does not spawn processes or use much CPU time, and is ideal for when one wants continuous monitoring and fast response upon target failure. It is written in C and supports both IPv4 and IPv6.
Alkaline is a full-featured standalone search and index server. The spider is a fully remote indexing daemon which includes support for all standards like robots.txt and "skip" meta tags, and allows multiple distinct configurations and search groups (searching many different sites from your server), including complex regexp indexing paths, authentification, filters for various document formats, XML-based online management and statistics, mrtg-compatible perf numbers, and more.
Allegro Common Lisp is a full ANSI Common Lisp (1994) implementation. It contains many extensions, including 32- and 64-bit native compilation, efficient built-in memory management, foreign functions (for interfacing with other languages), multiprocessing, UNICODE and locale support, XML/HTML parsers, a Web client and server, GTK+ interface (1.2 and 2.0), Java interface, OLE interface (Windows only), profiler, regular expressions, an XML RPC implementation, native Lisp RPC, sockets, DLL and shared library support, and more.
Amberfish is a general purpose text/XML retrieval utility. It features indexing of both free text and nested fields, built-in support for XML documents, structured queries allowing generalized field/tag paths, hierarchical result sets, automatic searching across multiple databases, efficient indexing, and relatively low memory requirements.
Ametys is a powerful Web CMS used by many institutions of higher education and government, but also industries and SMEs. It is known for its ergonomic design which promotes ease of use, its social Web functionality, and the ability to manage a large number of users. It makes content publishing accessible for the non-programmer and provides an easy editorial interface very similar to Microsoft Office applications.
Andrisoft WANSIGHT is a fully featured network traffic analyzer and collector. It provides in-depth traffic analysis, traffic accounting, and bandwidth monitoring, and enables you to generate complex traffic reports, graphs, and tops, instantly pin down the cause of network incidents, understand patterns in application performance, and make the right capacity planning decisions. It supports 10GbE packet sniffing and NetFlow, sFlow, and IPFIX.
Anki is an intelligent, spaced-repetition flash card program designed to maximize your memory potential and minimize the time spent studying. It has special features useful when studying Japanese, but can be used to study anything. Anki makes remembering things easy. Because it is a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the amount you learn. Anyone who needs to remember things in their daily life can benefit from Anki. Since it is content-agnostic and supports images, audio, videos, and scientific markup (via LaTeX), the possibilities are endless.
Aftpd is an FTP server for anonymous access designed for Unix-like operating systems. It uses an asynchronous model of connection processing and provides service for all users within a single process; can use multiple threads to run more efficiently on multi-core systems, with each thread serving multiple clients simultaneously; uses effective mechanisms of transferring files, minimizing copying of data in RAM (sendfile or a combination of the system calls mmap/writev); uses effective event notification schemes (kqueue on FreeBSD and epoll on Linux); uses poll or select in older systems; and supports IPv6. For safety, it works as an unprivileged user and uses chroot.