• The project should not already be in the Index. Please check this.
• There must be a note on the project's homepage (or in a README etc.) which says that the project is unmaintained. This will help not to include projects to the Index which aren't really unmaintained. Exception: This is not needed if you are the author of the project.
• If the project was not updated in over 12 month (neither homepage, nor a new release nor CVS activity etc...) then you can email the author and ask if he still maintains the project. If he doesn't, or you don't hear from him within 2 weeks, you can add that project to Unmaintained Free Software.

Please note that I might slightly edit your submission if necessary.