Open Source C Screen Recorders

scrcpy is an application for displaying and controlling your Android device through USB connection (or over TCP/IP). It is cross-platform (GNU/Linux, macOS and Windows) and does not require any root access. scrcpy displays only the device screen but offers great performance (30~60fps) and quality (1920×1080 or above). It’s got low latency (35~70ms) and a very low startup time (less than a second). It offers plenty of great features and is non-intrusive, with nothing left installed inside the device. scrcpy works with Android devices with at least API 21 (Android 5.0) and adb debugging must be enabled on the device.

Welcome to EasyCap, your ultimate desktop screen recorder and screenshot editor. Designed with simplicity and power in mind, EasyCap is perfect for professionals, creators, and anyone looking to capture their PC activities with ease. Whether you're creating tutorials, recording gameplay, or capturing important moments, EasyCap makes it effortless.

jsmpeg-vnc is a low-latency screen sharing server and browser client focused on high-frame-rate remote viewing. It captures a Windows desktop or selected window, encodes the video stream, and serves it to modern browsers through a lightweight client. The project is designed for scenarios where responsiveness matters, including games, demos, local network streaming, and remote visual interaction. It includes command-line options for bitrate, output size, frame rate, port, crop area, and remote input control. The browser client can support mouse lock for games that require relative mouse movement instead of absolute pointer positions. Its stack combines native capture and encoding with WebSocket delivery and JavaScript video decoding, giving users a browser-viewable remote screen without a full traditional VNC client.

PowerGrab records your Mac screen, along with audio from multiple sources, syncs everything and dumps it into a YouTube compatible .mp4 in real time. It dynamically adjusts capture rate to keep your computer responsive while screencasting. It's designed to be extremely straightforward, with very little twiddling of settings. Its best use is for quick helpful screen casts or game videos.