Nexus vs Themia

Nexus combines PC hardware monitoring, fan and pump control, and RGB lighting in one free app. It shows live CPU, GPU, memory, network, disk, fan, and temperature readings, with per-game FPS history on Windows. Its GPU-rendered lighting engine offers screen sync, audio sync, and Game Sync. Users can set fan and pump curves from any system temperature sensor or leave selected devices on BIOS or firmware settings. Nexus uses its own device drivers and a bundled OpenRGB build; hardware support depends on the exact model. A phone browser can act as a remote panel, using an encrypted relay outside the home network and switching to a direct connection when possible. The app works locally and offline without an account, while optional anonymous telemetry can be controlled in settings. Nexus runs on 64-bit Windows 10 or 11, Apple Silicon Macs, and x86-64 Linux. It has no builds for Windows on ARM, Intel Macs, or ARM Linux. Companion iOS and Android apps are not yet in the app stores.

Themia is a Windows desktop widget app for arranging information and tools on a computer desktop. It supports Windows 10 and Windows 11, and its library lists 50 widgets across six categories, including office, online, system, layout and utility widgets. Users can create separate desktop layouts and switch between them. Widgets support actions such as resizing, scrolling, checking off tasks, composing email and controlling music playback. Listed connections include Google, Microsoft, IMAP, CalDAV, CardDAV, OneDrive, GitHub, Claude, RSS and weather services. The app runs locally and works offline, although email, calendar and weather widgets need internet access to refresh. The maker says settings, notes, layouts, files and connected-account data remain on the user's computer. Credentials and OAuth tokens are encrypted at rest with Windows DPAPI, and data sent by Themia travels over TLS. The Free plan includes 10 widgets and two screens. Pro costs $19, paid once and adds unlimited widgets and screens, use on up to five devices, updates within v1.x and priority support.