Important Linux applications

Things you can run on a Linux server or VM

The specific applications that are important on a Linux server will depend on the specific goals and needs of the server. Here is a list of common applications that might be used on a Linux server:

Ansible - A configuration management tool that is used to automate the deployment and configuration of servers and applications.
Apache - A web server that is used to host websites and web applications.
Apache Tomcat - A Java servlet container that is used to host Java web applications.
Bind - A DNS server that is often used on Linux servers.
Cacti - A network monitoring and graphing tool that is used to monitor the performance and availability of servers and network devices.
Cassandra - A distributed NoSQL database management system that is used to store and retrieve data for applications.
Consul - A distributed service discovery and configuration tool that is used to manage the infrastructure and services of an application.
Cron - A scheduling utility that is used to execute commands or scripts at a specified time or interval.
Docker - A containerization platform that is used to deploy and run applications in isolated environments.
Dovecot - An IMAP server.
Drupal - A CMS that is used to create and manage websites and web applications.
Elasticsearch - A distributed search and analytics engine that is used to index, search, and analyze large volumes of data.
Exim - An Email server.
fetchmail - Getting email from external sources.
fail2ban - A security tool that is used to block malicious login attempts by banning the IP address of the offender for a specified amount of time.
GlusterFS - A distributed file system that is used to store and manage data across multiple servers.
Grafana - A data visualization and monitoring platform that is used to create dashboards and charts to display time series data.
Graylog - A log management and analysis platform that is used to collect, store, and analyze log data from various sources.
Hadoop - A distributed computing platform that is used to process large amounts of data.
HAProxy - A high-availability load balancer that is used to distribute incoming requests across multiple servers.
Icinga - An open-source network monitoring tool that is used to monitor the performance and availability of servers and network devices.
InfluxDB - A time series database that is used to store and query data that is collected over time.
Jenkins - A continuous integration and delivery platform that is used to build, test, and deploy software projects.
Joomla - A content management system (CMS) that is used to create and manage websites and web applications.
LVM - The Logical Volume Manager utility that is used to manage disk volumes on a Linux system.
Kafka - A distributed streaming platform that is used to process and transmit large amounts of data in real-time.
Kibana - A data visualization and exploration tool that is used to search, analyze, and visualize data stored in an Elasticsearch cluster.
Kubernetes - A container orchestration platform that is used to manage and deploy containerized applications at scale.
Logstash - A log management and analysis tool that is used to collect, parse, and store log data from various sources.
MariaDB or MySQL - A database management system that is used to store and retrieve data for applications.
MediaWiki - A CMS that is used to create and manage wikis.
Memcached - An in-memory cache that is used to improve the performance of web applications by storing frequently accessed data in memory.
MongoDB - A NoSQL database management system that is used to store and retrieve data for applications.
Nagios - A network monitoring tool that is used to monitor the performance and availability of servers and network devices.
Nginx - Another popular web server that is often used as a reverse proxy or load balancer.
Node-RED - A programming tool that is used to create and deploy IoT applications.
NTP - The Network Time Protocol daemon that is used to synchronize the clock on a Linux server with a reference time source.
OpenLDAP - An open-source Lightweight Directory Access Protocol (LDAP) server that is used to store and manage user and group information.
OpenVPN - A virtual private network (VPN) server that is used to securely connect remote users to a network.
OwnCloud - A file sharing and collaboration platform that can be installed on a Linux server.
Postfix - An email server that is used to send and receive emails.
PostgreSQL - An open-source database management system that is used to store and retrieve data for applications.
Proftpd - An FTP server that is used to transfer files over the network.
Puppet - A configuration management tool that is used to automate the deployment and configuration of servers and applications.
RabbitMQ - A message broker that is used to transmit messages between applications or systems.
Redis - An in-memory data store that is used to cache data and improve performance in web applications.
Rsyslog - A system logging daemon that is used to collect and store log messages from various sources.
Samba - A utility that allows a Linux server to share files with Windows clients.
Solr - An open-source search platform that is used to index, search, and analyze large volumes of data.
SpamAssassin - A tool that is used to detect and filter spam emails on a Linux server.
Spark - A distributed data processing platform that is used to analyze and transform large datasets.
Squid - A web proxy server that is used to cache web content and improve performance.
Terraform - A tool that is used to manage and provision infrastructure resources, such as servers and networking equipment.
Varnish - A caching server for HTTP.
vsftpd - A lightweight, secure FTP server that is used to transfer files over the network.
WireGuard - A VPN for secure point-to-point connections.
WordPress - Another popular CMS that is used to create and manage websites and blogs.
Zabbix - A network monitoring tool that is used to monitor the performance and availability of servers and network devices.