Best Free and Open Source Software – System Administration

Let’s start with detailed reviews of 29 Essential System Tools.

System Administration Software
System administration plays an essential role in the maintenance and operation of computer systems and networks.
Configuration Management Databases - Repository of information related to the various components of an information system
Mailing List Managers - Enables users to manage electronic mail discussion and e-newsletter lists
Disk cloning - Create, destroy, resize, move, check and copy partitions
Disk Image Tools - Work with disk images
Disk Encryption - Easy-to-use data encryption and security
Partitioning Tools - Provision new hardware, restore computers from a master image, perform system recovery
Configuration Management - Automatically manage the entire configuration of one or multiple computers
Server Provisioning Tools - Simultaneously set up thousands of machine unattended
Application Servers - Provides the business logic for an application program
Data Recovery - Retrieve data from corrupted or damaged storage media
Web Application Firewalls - See and analyze HTTP traffic to and from a web application
Log Analyzers - For collecting, parsing, storing, and making sense of logs
Logfile Viewers - To help identify (potential) issues with a server
Console Log File Analyzers - These tools give a lot more information than tail
Customer Service Trouble Ticketing Software - For running a help desk
System Profilers - Hardware information tools
Handy Hard Disk Utilities for System Tweakers
Choosing a Journaling File System - Special type of file system
Encrypted FUSE-Based File Systems - Filesystem in Userspace (FUSE) lets non-privileged users create their own file systems without editing kernel code
Backup Software
Backup software is used to perform a complete back up of a file, data, database, system or server. It enables users to make a duplicate of everything contained on the original source. This type of software is also used to perform a recovery of the data or system in the event of a disaster.
Backup Tools - Intuitive graphical interfaces, snapshot software, and command-line tools
Simple Backup - Keep data safe with the minimum of fuss
DeDuplicating Encryption Tools - Deduplicating encrypting backup software
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