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

Features

• Dashboard -- Real-time CPU, memory, disk, GPU, and network monitoring with circular gauges
• Hardware Info -- Detailed system, processor, graphics, and memory information at a glance
• 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)
• System Cleaner -- Remove package caches, crash reports, application logs, and app caches
• Scheduled Cleaning -- Automated background cleaning via systemd, launchd, or cron
• Process Manager -- View, sort, 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)
• Resource Monitor -- Historical charts for CPU, memory, GPU, network, and disk I/O
• Docker Management -- GUI for managing Docker images, containers, and volumes
• Battery & Disk Health -- Battery cycle count and capacity degradation, SMART disk health (NVMe + SATA)
• Hosts File Editor -- Manage /etc/hosts entries
• APT Source Manager / Homebrew Taps -- Manage package repositories
• Desktop Settings -- Adjust GNOME (Linux) or macOS desktop preferences
• 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	✅	❌	❌	❌
Battery & disk health	✅	❌	❌	❌
Docker management	✅	❌	❌	❌
Scheduled cleaning	✅	❌	✅	❌
Kiosk mode	✅	❌	❌	❌
Linux support	✅	✅	❌	✅
macOS support	✅	❌	✅	❌
Actively maintained	✅	❌ (since 2020)	✅	✅
Open source	✅	✅	❌	✅
Price	Free	Free	~$50/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 38+ bugs 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

Pre-built binaries are available on 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

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
Docker
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 and the Adwaita icon theme:

Ubuntu / Debian:

sudo apt install qt6-base-dev qt6-charts-dev qt6-svg-dev qt6-tools-dev-tools \
  libqt6concurrent6 adwaita-icon-theme cmake g++

Fedora / RHEL:

sudo dnf install qt6-qtbase-devel qt6-qtcharts-devel qt6-qtsvg-devel \
  qt6-linguist adwaita-icon-theme cmake gcc-c++

Arch Linux:

sudo pacman -S qt6-base qt6-charts qt6-svg qt6-tools adwaita-icon-theme cmake

macOS

Install dependencies via Homebrew. The adwaita-icon-theme package is required for consistent icon rendering -- without it, many UI icons will appear blank.

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 ..
make -j$(nproc 2>/dev/null || 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.