UltimateAutoRestart is the most feature-packed and widely used restart plugin available.

There is a plus version of the plugin available for those who would like to support the development of UltimateAutoRestart. It comes with a few extra features that are purely cosmetic. The free version of the
plugin will continue to be updated! Click here to check out the plus version! ❤️

Features List:
Disclaimer: Please consult the wiki for commands, permissions, placeholders, etc.
 If you are going to post a review, please don't post stack-traces (errors) or request features. You can do both of those things on my discord server.

View the default config file here!
View the default messages file here!

Find the Bungeecord Addon here!
Find the Velocity Addon here!

• Easily schedule restarts
· Create schedules like "Monday;23;00", "Friday;02;00", "Daily;12;00"
· Configure commands to run on restart or x sec. before (or after)
· Configure commands to run on specific days of the week
· Choose at which intervals sounds, messages will be sent
· Delay restarts if x users are playing on the server
· Execute Bukkit, Bungee, and Velocity commands (further setup required)
· Schedule commands to run through your proxy (you can do stuff like send back players to their server after it's up, send global restart alerts, etc.)

• Quality of Life Features
· Commands for your players to check when a restart will happen
· Commands to override or delay the restart interval
· Works on all panels (Pterodactyl, Multicraft, some may require extra steps)
· Many available translations (Visit wiki, translations section)
· Placeholders to use wherever you want (PlaceholderAPI)
· Fully customizable feedback such as chat messages (option to auto-center), actionbars, titles, sounds (custom power and pitch), for every plugin command and event. 

• General Quality
· Auto-updating configurations on plugin updates
· Works on versions throughout 1.8 - Latest
· Frequent updates, fixes, and discord support

• Developer API // JitPack - JavaDocs

(The videos below are outdated but still worth watching!)