I am a Computer Scientist and living in the UAE for more than 10 years.
I have put together some simple calculators online for your use.
GRATUITY CALCULATOR: It may happen to anyone, you may lose your job or you may quit voluntarily to move to other opportunities. In this case you can calculate the end of service benefits from your company with this calculator.
HOME PURCHASE CALCULATION: Well, when I wanted to buy my first home, I was barely having the downpayment. Later I have learned that there are many other hidden known/unknown fees are involved in this calculation. In this calculator you can simply enter the house value, the downpayment you are planning to make and the software will calculate total amount of money you need to spend on other things. Also if you record the mortgage rate with the years you can see your monthly installments too.
If you want to get in touch with me or want me to add something please let me know by sending an e-mail to firstname.lastname@example.org