[6] To reflect multi-vendor driver support, and to prevent potential quarrels with APC, the project name was changed to Network UPS Tools starting from 0.42.0, released October 31, 1999.

Evgeny "Jim" Klimov, the current project leader since 2020,[7] focuses first on automated testing and quality assurance of existing codebase to ensure minimal breakage introduced by new contributions, as well as to clean up older technical debts and inconsistencies highlighted by modern lint and coverage tools,[8] and issuing a long-overdue new official release v2.8.0 ultimately on April 26, 2022.

[9] The need to test NUT on many more platforms than typically offered by cloud CI projects based on market leaders (Debian/Ubuntu Linux, MacOS, Windows) led to a set of bespoke VMs and containers that were instantiated on different sponsoring cloud providers in different years, with a Jenkins-based NUT CI farm covering many of the less represented platforms.

Thanks to this set-up, a typical iteration of NUT code base runs some 300 scenarios with different build and test targets, across numerous OS kernel technologies and distributions based on them, system library, compiler, shell and make program implementations, covering numerous branches of the past two decades of IT evolution -- actively ensuring all these systems are supported with each merged change set.

Over its two-decade history, the open-source project became the de facto standard solution for UPS monitoring provided with OS distributions and embedded into many NAS solutions, some converged hypervisor set-ups, and other appliances, and enjoyed contributions and support from numerous end-users as well as representatives of power hardware vendors providing protocol specifications, sample hardware, and in many cases new NUT driver code and subsequent fixes based on NUT community feedback.