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Free Software

During past three weeks, I am learning the GNU/Linux. At the same time, I am shocked by the spirit of the Free Software.
I decided to change my programing way to Free Software, or Open Sourc Software.

Free Software Foundation
is an excellent source of inforamtion.
I will move to opensource and let the Pentacle In out Board free to be access.
From Pentacle Free Limited to Pentacle Silver to Pentacle Gold, over hundreds copies are downloaded.
This software will be combined to one as Pentacel In Out Board. It is totally free to download, free to use, free to modify, and it is a opensource software.
The site,, will host max 4 opensource software.
Everything is changed by Free Software.

Web-Based Tools

2013.08.29 Update: All links below are updated.
When you use the Internet or weaver some webpages, some tools are must have.
This is the site of Peter Forret.
You will find following handy tools:
Color converter: convert RGB to CMYK/HSV color spaces
HTML convert convert special chârãçtérs to valid encoded HTML
HTTP Analyzer: check HTTP headers
Speed Analyzer: check your connection speed to different continents


This program is known from a Chinese Blog. Later I found the author is a PHD student of UBC, Matthew Brown.
AUTOSTITCH is the first fully automatic 2D image stitcher.
Sometime we call it a panorama program.

Capable of stitching full view panoramas without any user input whatsoever, AutoStitch is a breakthrough technology for panoramic photography, VR and visualisation applications.
AutoStitch is built using cutting edge research from the AI lab at UBC, but it’s incredibly simple to use! Just select a set of photos, and AutoStitch does the rest: digital photos in, panoramas out.

Following is a demo photo I took outside of my office tower yesterday.

Made by 5 photos.
He is periodically updating the demo version of AutoStitch. Please download the latest version from this webpage.
It is free green program. Easy to use.
Thanks for Matthew Brown’s wisdom to develop this smart program.

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