XnView one of gr8 image browser and jpg editor.

For sorting and managing photographs I have found XnView as very good tool. It provides good image browser with checking histogram and exif data on the fly.

Its Jpg file enhancer is real easy and can do things I want very quickly.

I prefer XnView over Google Piccasa for it works in Linux and does not stay awake in background. Windows version also available. http://www.xnview.com/en/xnview/

Photo editing software

I have started using GIMP for photo touch up. it has very advance features and is free.

Over and above the regular resizing and croping you can do the levels/saturation hue/layers like photoshop.

Creating the technical chart online

I am explaining the process of making the chart
of the stock or index.

1. Go to http://www.icharts.in/charts.html
2. select the symbol of the stock or index you want to plot the chart of.
3. select the range of chart that you are intending to make
4. once you see that chart is of the range you needed save it by right clicking on the chart

once you save the chart the file. The .png file is available for you
to edit. You can use the mspaint (paint brush) to edit and add the
trend lines and notes to it.

Download youtube

Well many people ask me if they could download the videos from youtube so that they can watch them when they are offline. The good news is there are many tools available for doing so.

Some of them are youtube-dl written in python. If you are using firefox then there is great addon video downloadhelper.

There can be copyright issue with the video content downloaded from youtube hence it would be safe for you to use the downloaded video content for your own personal use.

Free Download Manager

Free Download manager is good tool for managing your large
file download with resume support and achieving higher download
for the download link

Free online charting softwares . . !

Here I have recently posted the stepwise procedure to create the chart
MetaStock Online
This is provided through java. It feels like using actual software via Firefox / Internet explorer with live zooming, trenlines, indicators. Its fast to use as here the data is dumped first in your PC then the MetaStock online interface is used to further manupalate it.
Indiabulls uses MetaStock online while data from NSE and BSE are available. Its my first choice to have a first look of any stock. With MetaStock java interface you can draw few lines and On Balance Volume indicator here is also very reliable.
BSE official site also uses MetaStock online it provides a larger view of chart. While it only gives data of BSE listed stock. This could be best suited for the Candle Stick analysis. While I am not good at candle sticks. Typical metastock online output would look like this:

icharts, As the name says it uses ichart software for chart preparation. This is great site for very long term ie > 1yr charts. As I prefer such a long term chart to be seen on Log scale. This site provide Log scale also
Yahoo finance It also uses ichart for chart preparation. While it has all the facility I go to yahoo for 5-day chart. This is very useful if you want to do day trading. Typical icharts output would look like this:

icicidirect technical charts are available to icicidirect members only. While it is not the MetaStock but has simillar and beter features online. I found it to run fine only when viewed through Windows98. Though it is very comprihansive online charting I like the most in here is the retractment tool.

NSE official site While it provide good charts I do not really use it. While this site provide data in .cvs format which I use to import in spreadsheets like OpenOffice or MS-Excel. While I do not really do much of analysis on spreadsheet. What I do on spreadsheet is to understand the formulae of Indicators and how they work. I have tried out the MIDAS, was real fun.
By using combination of above I try to analyse the stock.

Additions on Sept 2011
If you are advance user there are many more stock charting tools available. One which I was very impressed with was "AIO trade" which is a desktop tool written in java.

If you want to host on the net then there is jchart .

Addition on feb 2013

Here I have recently posted the stepwise procedure to create the chart

Open any archives

7 ZIP is a open source/free software hosted on sourceforge which is giving you the key to open most of the known archive formats from .arj to .zip

This can also open .deb, .rar and .tar formats for that matter.

I have now migrated to 7 zip from winZip.