G4U ("ghosting for unix") is a NetBSD-based bootfloppy/CD-ROM that allows easy cloning of PC harddisks to deploy a common setup on a number of PCs using FTP. The floppy/CD offers two functions. The first is to upload the compressed image of a local harddisk to a FTP server, the other is to restore that image via FTP, uncompress it and write it back to disk. Network configuration is fetched via DHCP. As the harddisk is processed as an image, any filesystem and operating system can be deployed using g4u. Easy cloning of local disks as well as partitions is also supported.

The question on operating systems that can be deployed with g4u is the same as for the filesystems: any. Given the image-approach again, g4u is able to handle any operating system. Systems that were cloned successfully include NetBSD, Linux, Novell Netware 4.11 and 5.1, Solaris/x86, Windows NT, 2000 and XP.

By moving the harddisks to a PC, g4u can even be used to deploy operating systems for non-PC based SCSI machines running HP-UX, Irix, Solaris, AIX etc.

http://www.feyrer.de/g4u/

Buddi is a simple budgeting program targeted for users with little or no financial background. It allows users to set up accounts and categories, record transactions, check spending habits, etc.

It's well opensource software for family

Buddi is released as Open Source Software. You can download it for free, with no disabled features and no time limit. If you find that you like it, and that it has helped you to organize your finances, author would greatly appreciate a small donation via the link at the bottom of the his home page

Buddi will run on almost any computer which has a Java virtual machine installed. This can include Windows, Macintosh OS X, Linux, and many other operating systems.

http://buddi.digitalcave.ca/

Notepad++ is a free (as in "free speech" and also as in "free beer") source code editor and Notepad replacement that supports several languages. Running in the MS Windows environment, its use is governed by GPL License.
Based on a powerful editing component Scintilla, Notepad++ is written in C++ and uses pure Win32 API and STL which ensures a higher execution speed and smaller program size. By optimizing as many routines as possible without losing user friendliness, Notepad++ is trying to reduce the world carbon dioxide emissions. When using less CPU power, the PC can throttle down and reduce power consumption, resulting in a greener environment.
http://notepad-plus.sourceforge.net/uk/site.htm

After few months your computer running slow.

What can happen with it and how to fix that?

That really need to bring computer to see some support desktop guy? Hmm
Let's go through it