A pack of independent utilities, including:
szutil_chatsocket: Expose in-game chat stream as a unix-domain socket for arbitrary chat integrations.
szutil_chatsounds: Configurable beep notifications for in-game chat.
szutil_clocksync: Synchronize in-game clock smoothly with real-time clock so users can log in at predictable times of day.
szutil_consocket: Expose an admin console as a unix-domain socket for clientless admin via ssh.
szutil_controlhud: Togglable on-screen input control HUD, useful for demo recording.
szutil_fixhack: Fix lighting and fluid bugs automatically and continuously in background.
szutil_invite: Let players invite other players to teleport to visit them, but they can't bring items this way.
szutil_lagometer: Optional on-screen server performance meter HUD.
szutil_limitworld: Limit mapgen to a floating hemisphere, with players taking damage if they fall off.
szutil_logtrace: Allow privileged players to monitor server debug trace in chat.
szutil_maplimitfx: Display particle visual at hard map boundaries.
szutil_motd: Display a formspec MOTD to players on login, only if updated since the last view.
szutil_nowonline: Periodically display cumulative list of online players, for chat bridges.
szutil_roles: Manage privs via special privs that represent groups of other privs.
szutil_spiralhomes: New players are assigned initial spawn locations dispersed around the world in an outward spiral.
szutil_stealth: Make a player as close to completely invisble to players as possible, for moderation or spectation use.
szutil_suadmin: Change admin access to be based on a /su (password) command, instead of by player name.
szutil_telecode: Teleportation by opaque codes that can be shared, saved, and published.
szutil_usagesurvey: Collect usage statistics per-mapblock on how each is being used (e.g. for pruning lightly-used portions of the map).
szutil_watch: Allow privileged players to attach to and spectate other players.
Each mod in the pack is effectively independent, and they can be enabled/disabled individually. Mods are distributed as a single pack because they have a single shared maintenance/release cycle.