Tips and Tweaks gives you tips on issues in certain versions of Unraid and lets you make some adjustments to Ethernet NIC(s), disk cache settings, and CPU scaling governors that can potentially help with performance and latency issues.
Community Apps
Install the popular Community Apps plugin and choose from a large, growing catalog of applications to run in your Unraid server.
Community Developers: See here
This Plugin adds uinput to unRAID.
Unassigned Devices is used to mount and share non-array disks, remote SMB or NFS shares, and iso files.
Enables support in the Unassigned Devices Plugin for HFS+, exFAT, and apfs disk formats, and to enable destructive mode.
Unassigned Devices Preclear is used to exercise and clear disks and prepare them for adding to the array.

Allows unRaid's GUI to utilize the full browser window width instead of being limited to a maximum of 1920 pixel across
Allows you to make your own notes for every page on the Unraid GUI

CA User scripts is designed to be a front end to execute user scripts without having to drop down to the command line.

A plugin to create and modify vfio-pci.cfg from the unRAID webGui. Allows you to bind PCI devices by address to the vfio-pci driver. Also displays IOMMU groupings and which devices support reset.

Wake On Lan for Virtual Machines. Allows you to recieve a wake on lan packet to wake or start up kvm virtual machines.

Wake On Lan plugin allows you to scan your network, add and save computers from your network. Then wake them.

Zabbix-Server
Network Services • Other, Productivity, Tools / Utilities • System
Zabbix server is the central process of Zabbix software. The server performs the polling and trapping of data, it calculates triggers, sends notifications to users. It is the central component to which Zabbix agents and proxies report data…

Zabbix-Webinterface
Network Services • Other, Productivity, Tools / Utilities • System
Zabbix web interface is a part of Zabbix software. It is used to manage resources under monitoring and view monitoring statistics. VARIABLES: If you need other variables here is a complete list of all variables:…

Allows you to use ZFS format on non Array disks.

The ZFS Master plugin provides information and control over the ZFS Pools in your Unraid. Available ZFS Pools are listed under the "Main/ZFSMaster" tab.

This plugins wants to be the sidekick to unRAID-ZFS from Steini1984, adding a widget for the dashboard, and possibly some APIs to get the status (ie. to use with HomeAssistant).

ZFS backup with remote capabilities