Spong is a simple system-monitoring package. It features client-based monitoring (CPU, disk, processes, logs, etc.), monitoring of network services, grouping of hosts (routers, servers, workstations, and PCs), host-specific contact and downtime information, configuration on a client-by-client basis, results displayed via the Web, history of problems, messaging (via email or pager) when problems occur, and verbose information to help diagnosis problems. It communicates via simple TCP-based messages, and is written in Perl.
Vcron is a graphical interface to cron and at, allowing to view, modify, delete and add programmed actions. You will no longer have to cope with the cron/at horrible syntax. Vcron is written in tcl/tk , it is a very easy to use multilingual application, with an inline manual. It has been tested on RedHat and Slackware, but it should work without problems on other platforms.
The netpipes package makes TCP/IP streams usable in shell scripts. It can also simplify client/server code by allowing the programmer to skip all the tedious programming bits related to sockets and concentrate on writing a filter/service. <P>Applications of these utilities can include file transfer, network backups, HTTP queries, remote procedure calls, and TCP daemon testing. <P>The SSL encryption filter available in the US/Canada version can be applied by shell scripts communicating with secure HTTPDs and can be used to make an SSL IMAPD out of a non-SSL one. (requires the SSLeay library).
The Openwall Linux kernel patch is a collection of security "hardening" features for the Linux kernel. In addition to the new features, some versions of the patch contain various security fixes. The "hardening" features of the patch, while not a complete method of protection, provide an extra layer of security against the easier ways to exploit certain classes of vulnerabilities and/or reduce the impact of those vulnerabilities. The patch can also add a little bit more privacy to the system by restricting access to parts of /proc so that users may not see what others are doing.
procps is a package of utilities which includes ps, vmstat, top, w, skill, snice, pgrep, pkill, free, sysctl, pmap, uptime, and kill. These utilities report what is running, who is logged in, how long the system has been running, and what is using up memory. They can be used to kill processes and change run-time kernel configuration values.
Yard is a suite of Perl scripts for creating rescue disks (also called bootdisks) for Linux. A rescue disk is a self-contained Linux kernel and filesystem on a floppy, usually used when you can't (or don't want to) boot off your hard disk. A rescue disk usually contains utilities for diagnosing and manipulating hard disks and filesystems.
AutoRPM is a program that can do any combination of the following: mirror RPMs from an FTP site, keep installed RPMs consistent with an FTP site or local directory and keep installed RPMs in a cluster or network of systems consistent. It is highly flexible and contains a fully command-line driven interactive install mode (for installing RPMs from the queue or for installing RPMs from your system interactively). It also handles recursive dependencies, multiple versions of the same RPM, the same RPM with multiple architectures, and more. It does some of the same tasks as up2date and AutoUpdate.
Qps is a visual process manager, an X11 version of "top" or "ps" that displays processes in a window and lets you sort and manipulate them. It displays some general system information, and many details about current processes (such as the TCP/UDP sockets in use by a process). Qps runs on Linux and Solaris.
Moodss is a modular monitoring application, which supports operating systems (Linux, UNIX, Windows, etc.), databases (MySQL, Oracle, PostgreSQL, DB2, ODBC, etc.), networking (SNMP, Apache, etc.), and any device or process for which a module can be developed (in Tcl, Python, Perl, Java, and C). An intuitive GUI with full drag'n'drop support allows the construction of dashboards with graphs, pie charts, etc., while the thresholds functionality includes emails and user defined scripts. Monitored data can be archived in a SQL database by both the GUI and the companion daemon, so that complete history over time can be made available from Web pages or common spreadsheet software. It can even be used for future behavior prediction or capacity planning, from the included predictor tool, based on powerful statistical methods and artificial neural networks.