ShareX is a comprehensive screenshot, image editing, and file sharing application for Windows. It features a modular architecture with separate libraries for screen capture, image editing, uploading, helpers, history, and tools. The application supports capturing screenshots/recordings, applying annotations and effects, uploading to over 50 services, and includes various productivity tools. Built with .NET/C# using a mix of Windows Forms and Avalonia UI frameworks, it employs MVVM patterns, plugin architectures for extensibility, and cross-cutting helper libraries. The system handles data flows from capture through editing to upload/storage, with history tracking for user convenience.
Netis Cloud Probe is a production-grade network packet capture and forwarding system designed to monitor traffic without requiring dedicated TAP or SPAN hardware. It consists of a high-performance C capture engine (cpworker), a Go daemon (cpdaemon) that manages worker processes and communicates with a central policy manager (CPM), and a Go CLI (cpctl) for manual control. The system supports multiple capture sources (libpcap, DPDK, pcap files) and output sinks (GRE, VXLAN, ZMQ, rotating files) with a configurable execution model (real-time or pipelined using a lock-free SPSC ring buffer). Configuration reload is handled via a state-machine protocol, enabling hot-swapping of tasks without packet loss. The codebase is multi-language (C, Go) with CMake and Mage build systems, comprehensive unit and integration tests, and bilingual documentation (English, Chinese). It is actively maintained with a recent commit and continuous integration.
Flameshot is a powerful cross-platform screenshot application written in C++ with Qt. It provides a GUI for capturing screen regions, annotating with various tools (arrows, circles, text, pixelation, etc.), and saving or uploading images to Imgur or other services. The architecture includes a command-line interface for scripting, a background daemon for system tray and global shortcuts, and a DBus interface for desktop integration. Internally, it is a monolithic desktop app with a modular tool system (each annotation tool is a separate class) and a config system with validation. The codebase is well-structured but carries platform-specific workarounds (Wayland, Windows registry hacks) and some legacy code, leading to medium technical drift. It is actively maintained with recent commits, though translations show signs of staleness.