tightVNC / realVNC

일단 둘다 동일한 VNC이긴하다.
tightVNC는 realVNC 기반의 GPL 라이센스를 따르고 있고
realVNC는 free버전이 존재한다.

오늘 잠시 VNC 서버에 tightVNC로 접속해본 느낌은, real VNC free 버전에 비해서 화면 갱신이 매우 빠르다는 점이다.
자세한 내용은 tightVNC 서버를 설치 후 테스트를 해봐야 알 수 있을것 같다.

일단 tightVNC는 GPL 라이센스이므로 모든 기능을 100% 지원/공개 하기 때문에
real VNC 공개버전과 비교를 하자면, 파일 전송이 가능하다는 장점이 있다.

TightVNC Features Here is a brief list of TightVNC features absent in the standard VNC. File transfers in versions for Windows. You can updload files from your local machine to the TightVNC Server, and download files from the server to your computer. Support for video mirror driver (Windows 2000 and above). TightVNC Server can use DFMirage mirror driver to detect screen updates and grab pixel data in a very efficient way, saving processor cycles for other applications. Scaling of the remote desktop (viewer for Windows and Java viewer). You can view the remote desktop in whole on a screen of smaller size, or you can zoom in the picture to see the remote screen in more details. Efficient "Tight" encoding with optional JPEG compression. New Tight encoding is optimized for slow and medium-speed connections and thus generates much less traffic as compared to traditional VNC encodings. Unlike other encodings, Tight encoding is configurable via compression levels and JPEG image quality setting. Enhanced Web browser access. TightVNC includes a greatly improved Java viewer with full support for Tight encoding, 24-bit color mode, and more. The Java viewer applet can be accessed via built-in HTTP server like in the standard VNC. Support for two passwords, full-control and read-only. The server allows or disallows remote keyboard and mouse events depending on which password was used for authentication. Automatic SSH tunneling on Unix. The Unix version of TightVNC Viewer can tunnel connections via SSH automatically using local SSH/OpenSSH client installation. And more. TightVNC includes a number of other improvements, performance optimizations and bugfixes, see change logs for more information.

50% 축소해서 본 tightVNC의 remote화면

간추린요약 - tightVNC가 나은 점
1. tightVNC가 realVNC에 비해서 접속속도 및 화면갱신속도가 상당히 빠르다
    (테스트 조건 realVNC 서버/윈도우 realVNC 서버)
2. 화면 scaling을 지원한다
3. 파일 전송을 지원한다고 한다(VNC free edition 대비, 테스트 해보지 못했음)

리눅스 서버로의 접속은 실질적인 화면갱신속도 차이는 거의 없지만, tightVNC 쪽이 접속속도가 빨랐다.

[tightVNC : http://www.tightvnc.com/]
[realVNC : http://realvnc.com/]