Linux & macOS System Optimizer and Monitor
_{The only free, open-source, cross-platform all-in-one system optimizer, monitor, and manager}

Features

Monitor

• Dashboard -- Real-time CPU, memory, disk, GPU, and network monitoring with customizable tile layouts, a system health score, and a one-click maintenance wizard
• Hardware Info -- Detailed system, processor, graphics, memory, battery, and disk information at a glance
• Resource Monitor -- Historical charts for CPU, memory, GPU, network, and disk I/O
• Kiosk Mode -- F11 fullscreen dashboard-only mode for dedicated monitoring displays
• GPU Monitoring -- GPU utilization tracking for NVIDIA, AMD, and Intel (Linux); Apple Silicon (macOS)
• Battery & Disk Health -- Battery cycle count and capacity degradation, SMART disk health (NVMe + SATA)

Manage

• System Cleaner -- Remove package caches, crash reports, application logs, app caches, and unused Flatpak runtimes
• Scheduled Cleaning -- Automated background cleaning via systemd, launchd, or cron with exclusion rules
• Disk Tools -- Find large/old files and scan for duplicates across directories
• File Search -- Search files by name, extension, size, and date with advanced filters
• Process Manager -- View, sort, filter, and manage running processes
• Service Manager -- Start, stop, and toggle system services (systemd / launchd)
• Startup Apps -- Manage auto-start applications with configurable delay
• Package Uninstaller -- Uninstall packages via APT, DNF, Pacman, Snap (Linux) or Homebrew (macOS)

System

• Docker Management -- GUI for managing Docker images, containers, and volumes
• System Logs -- View, filter, and search journald/syslog entries by severity
• Hosts File Editor -- Manage /etc/hosts entries with DNS cache flushing
• Network Diagnostics -- Ping, traceroute, DNS lookup, open ports viewer, and firewall management
• Power Profiles -- Switch between power-saver, balanced, and performance modes (Linux); Spotlight rebuild, disk verify, and LaunchServices rebuild (macOS)
• APT Repository Manager / Homebrew Taps -- Manage package repositories with health checks, diagnostics, and one-click repair
• Desktop Settings -- Adjust GNOME (Linux) or macOS desktop preferences
• Command Palette -- Ctrl+K quick-navigation to any page or action
• Theme Support -- Dark, light, and system-auto color schemes
• Internationalization -- 34 languages supported

How Nexis Compares

	Nexis	Stacer	CleanMyMac X	BleachBit
Real-time monitoring	✅	✅	Partial	❌
System cleaning	✅	✅	✅	✅
Process/service management	✅	✅	❌	❌
Package management	✅	✅	✅	❌
GPU monitoring	✅	❌	❌	❌
Hardware info panel	✅	❌	❌	❌
Battery & disk health	✅	❌	❌	❌
Docker management	✅	❌	❌	❌
System log viewer	✅	❌	❌	❌
Disk analysis & duplicates	✅	❌	✅	❌
Network diagnostics	✅	❌	❌	❌
Scheduled cleaning	✅	❌	✅	❌
Kiosk mode	✅	❌	❌	❌
Linux support	✅	✅	❌	✅
macOS support	✅	❌	✅	❌
Actively maintained	✅	❌ (since 2020)	✅	✅
Open source	✅	✅	❌	✅
Price	Free	Free	~$40/year	Free

Background

Nexis began as a fork of Stacer, a popular Linux system optimizer created by oguzhaninan. After the original project went inactive in 2020, development continued here -- porting to Qt 6 and C++17, adding native macOS support, GPU monitoring, a hardware info panel, kiosk mode, and fixing hundreds of bugs and regressions inherited from the upstream codebase. As the feature-set diverged, the project was rebranded as Nexis to reflect that it had become something new. Stacer laid the foundation; Nexis is where it goes from here.

Downloads

Install via PPA, AUR, or Homebrew for automatic updates, or download pre-built binaries from the Releases page:

• Linux x86_64: .deb package, .AppImage portable, standalone binary
• Linux ARM64 (aarch64): .deb package, .AppImage portable, standalone binary
• macOS Apple Silicon: .dmg disk image

Install via PPA (Ubuntu)

sudo add-apt-repository ppa:s4solutionsllc/nexis
sudo apt update
sudo apt install nexis

Supports Ubuntu 22.04 (Jammy), 24.04 (Noble), and 25.04 (Plucky) on both x86_64 and ARM64. Updates are delivered automatically via apt upgrade.

Install via AUR (Arch Linux)

yay -S nexis

Also works with paru or any other AUR helper. Builds from source — requires Qt6 development packages which are pulled in automatically. Updates are delivered via yay -Syu.

Install via Homebrew (macOS)

brew tap s4solutionsllc/nexis
brew trust s4solutionsllc/nexis        # required on Homebrew 6.0+ (third-party tap)
brew install --cask nexis

Requires macOS 14+ (Sonoma) on Apple Silicon. Updates are delivered via brew upgrade --cask nexis.

Homebrew 6.0+ requires third-party taps to be trusted before their casks will load. Without brew trust, brew install/upgrade/outdated refuse the cask with Refusing to load cask … from untrusted tap, so new releases never appear. Trusting the tap once is sufficient; future upgrades work normally.

Screenshots

Dashboard -- real-time system monitoring

System Cleaner -- remove caches, logs, and crash reports

Resources -- historical CPU, memory, GPU, network, and disk I/O charts

View all screenshots

Page	Screenshot
Hardware Info
Startup Apps
Search
Services
Processes
Uninstaller
System Logs
Resources
Helpers
APT Repository Manager
GNOME Settings
GNOME Settings (Window Manager)
GNOME Settings (Mouse/Touchpad)
Settings
Feedback

Building from Source

Prerequisites

Linux

Install Qt 6 development libraries:

Ubuntu / Debian:

sudo apt install cmake g++ qt6-base-dev qt6-charts-dev qt6-svg-dev \
  qt6-tools-dev-tools qt6-l10n-tools

Fedora / RHEL:

sudo dnf install cmake gcc-c++ qt6-qtbase-devel qt6-qtcharts-devel \
  qt6-qtsvg-devel qt6-qttools-devel qt6-linguist

Arch Linux:

sudo pacman -S cmake qt6-base qt6-charts qt6-svg qt6-tools

Note: On minimal or headless environments you may also need libgl1-mesa-dev (Debian/Ubuntu) or equivalent OpenGL headers.

macOS

brew install qt@6 cmake adwaita-icon-theme

After installing, ensure Qt is in your path:

export PATH="$(brew --prefix qt@6)/bin:$PATH"

Build

mkdir -p build && cd build
cmake .. -DCMAKE_PREFIX_PATH=$(brew --prefix qt@6)
make -j$(sysctl -n hw.ncpu)

Development

Nexis is co-authored by Claude Code, Anthropic's AI coding agent. Claude Code contributes to architecture decisions, feature implementation, bug fixes, CI/CD pipelines, and release engineering -- working alongside the human maintainer as a pair-programming partner.

Translations

Nexis supports 34 languages. Translations are managed via Crowdin -- no coding required to contribute. Sign up, pick a language, and start translating in your browser.

New translations are automatically synced back to this repository via pull request.

Maintainer Setup

To enable the Crowdin sync pipeline for a new fork:

1. Create a project at crowdin.com (free for open source).
2. Add two repository secrets in GitHub Settings > Secrets:
   • CROWDIN_PROJECT_ID -- numeric project ID from the Crowdin dashboard.
   • CROWDIN_PERSONAL_TOKEN -- personal access token from Crowdin account settings.
3. Seed the project with existing translations (one-time):

   brew install crowdin                # macOS
   export CROWDIN_PROJECT_ID=<id>
   export CROWDIN_PERSONAL_TOKEN=<token>
   crowdin upload sources --config crowdin.yml
   crowdin upload translations --config crowdin.yml --auto-approve-imported

4. The crowdin-sync.yml GitHub Action handles ongoing sync automatically.

Contributing

Bug reports and feature requests are welcome! Please open an issue or submit a pull request. See CHANGELOG.md for release history.

Maintenance & Releases

Nexis is a free, GPL-3.0 reference product with a single named full-time maintainer (no capacity time-box). If you are a future maintainer (human or agent) inheriting the project, read these in order:

• docs/MAINTAINER_SOP.md — ownership, time-box, on-call cadence, decision rights.
• RELEASE.md — end-to-end release runbook (tag, build matrix, code signing, Homebrew/AUR/PPA bumps, CVE expedited path, post-release verification, dry-run procedure).