As is known to all, the serious network blockade and censorship in Mainland China (namely the GFW founded in 1998) has given rise to numerous excellent proxy software from China, including but not limited to: Freegate, UltraSurf, SoftEther VPN, GoAgent, Shadowsocks, cow, Lantern, and more. Among them, Shadowsocks (AKA: 影梭) is a free, open-source, cross-platform, encrypted, and secure small proxy project from China. It uses the SOCKS5 proxy protocol (similar to SSH tunnel), and runs very, very fast. In China and many other countries, it's widely used to break through the GFW-like Internet blockade and censorship and access the disturbed, blocked, or shielded web sites and web services around the world, such as Google, YouTube, FaceBook/Twitter, and more.

Usually, to save a whole web page or just part of the content to our local disk, we have only two ways for choise: 1) use the browser built-in print function (Ctrl + P) to save an entire page as a PDF file; 2) copy the corresponding content and paste them into a local, new created TXT or DOC file, which requires at least 4 steps to finish: copy the text and/or image -> create a new file and name it -> open this new file -> paste the content from clipboard to file and save the file.

Jitsi (AKA: Jitsi Desktop, formerly called SIP Communicator) is a powerful, scalable, secure (using the SIP/RTP/SRTP/ZRTP encryption algorithms), high-quality and community-driven VoIP/video conferencing/instant messaging application from France, written in Java. It's free, open-source, cross-platform (across Windows, Linux, Mac OS X desktop platfroms and Andrjoid, iOS mobile devices), multi-protocol and multi-user on use and allows to be made secondary development.

MakeHuman is a free and open-source realistic 3D human characters modeling tool for illustrations, animations, games, or Zbrush/Mudbox sculpting on Windows, Mac OS X and Linux platforms. It was developed (before version 0.9, written in only C; after version 1.0, in C and Python; from version 1.0.2, only in Python) by a community of programmers, artists, and academics with passion, who are interested in 3D modeling of characters and take contribution for a better world as its purpose.

Due to the continuous development of computer hardware, now more and more software start to use physical even virtual memory unscrupulously. Therefore, it's very helpful or necessary to effectively perform memory management even for high configuration of computers with more than 4 GB of RAM. At least, that can markedly avoid system performance die-off and frequent errors because there's not enough memory.