Do Tell the difference
between SDCC , RAID, KEIL with all
the advantages, disadvantages starting
from the ease of use,cost,code size,
user interface,platform support,
technical support, and all other factors ?

Do tell me is there a reason to bring up a subject that was discussed as late as jan 10 of this year.
If you squint and very carefully look in the upper left corner you will see a little "window" labelled "search", try it and you will be amazed.

Erik