4 Must‑Try Open‑Source Tools for Remote Desktop, AI Assistants, Lyrics & Free Domains

1. CrossDesk: Lightweight Cross‑Platform Remote Desktop Tool

CrossDesk is an open‑source remote‑desktop application written in C++. It runs efficiently on Windows, macOS, and Ubuntu, and offers a web client that works in any browser, including iOS Safari, allowing users to control a remote computer without installing additional software.

Technically, CrossDesk builds on the MiniRTC real‑time audio‑video transmission library, integrating network tunneling, soft/hardware codec support, congestion control, and encrypted transport to ensure smooth video and secure data exchange.

Open‑source repository: https://github.com/kunkundi/crossdesk

2. Everywhere: Seamless AI Assistant for Desktop Workflows

Everywhere is a cross‑platform AI assistant built with .NET and Avalonia. It captures the context of the current window or selected text via a hotkey, allowing users to ask coding questions, request translations, or request refinements without leaving the desktop.

The assistant supports a wide range of models, including OpenAI, Claude, Gemini, DeepSeek, Kimi, and local Ollama deployments. It also integrates the MCP tool to securely access the local file system, browser, and terminal, enabling the AI to perform real‑time operations on the computer.

Open‑source repository (still in active development): https://github.com/DearVa/Everywhere

3. BetterLyrics: Attractive Lyrics Visualization for Windows

BetterLyrics is a Windows‑only open‑source lyrics visualizer built with WinUI 3 and Win2D. Its UI follows the Windows 11 design language, featuring frosted‑glass effects and fluid backgrounds. It offers three display modes: full‑screen screensaver, desktop overlay, and docked lyric bar.

The tool plays local music, connects to NAS via SMB or WebDAV, and synchronizes lyrics across Spotify, Apple Music, NetEase Cloud Music, and QQ Music, eliminating lyric‑out‑of‑sync issues.

Open‑source repository: https://github.com/jayfunc/BetterLyrics

4. FreeDomain: Zero‑Cost Personal Domain Service

FreeDomain enables anyone to obtain a personal domain for free, supporting suffixes such as .DPDNS.ORG, .US.KG, .QZZ.IO, and .XX.KG. Registration requires no payment verification, and domains can be pointed to third‑party DNS providers like Cloudflare, FreeDNS, or Hostry.

The project includes abuse‑prevention mechanisms and is positioned as a non‑profit resource for students and developers to host blogs, test applications, or deploy static sites without incurring domain costs.

Open‑source repository: https://github.com/DigitalPlatDev/FreeDomain