I like everything about netbeans for my PHP development on my mac, except the huge memory footprint.

I'm looking for a good alternative PHP development tool for mac that:

- Has code navigation
- Has Code auto-complete
- Low memory footprint (under 200MB on multiple open files)
- Preferably FREE

I tried coda, textmate, eclipse (also memory magnet), aptana (also memory magnet) and I found them not as good as netbeans.

When I was developing on windows, I used PSpad for a few years, and I loved it, but there is no mac port at the moment.

My system relevant specs are:

- Macbook 2.4Ghz, 4GB RAM

Any assistance would be appreciated.