Here is a program I wrote to calculate your college GPA.
As opposed to online GPA calculators (like this one), the courses you enter are saved. Because of this, you do not need to re-enter them every time you want to calculate your GPA. See grades.txt for an example.
This program is targeted towards students looking to transfer to a CSU or UC, but will also work for other college students.
The process is really simple:
1. Unpack the downloaded .zip file to a folder
2. Modify the included file "grades.txt"
3. Run the program
4. If you find bugs or have suggestions, feel free to post a comment here or contact me
PS: I can't guarantee the accuracy of the program, but I have used it to several times to calculate my GPA and have found no problems.