Are there any SSD drives not from Apple for which you can enable TRIM without hacking OS X's kernel? I would like to see if there is a way of getting TRIM support on SSD drives gotten from other manufacturers.

As far as I know, Apple does not produce SSD drives so if I get a similar drive not from them it should work? Or maybe they have custom firmware?
Enabling TRIM on third party SSDs
You can enable TRIM on third party SSDs by using a tool called Trim Enabler  which &quot;works by patching a kernel extension, and also includes some SMART data to check the health of the SSD drive&quot;. [1]
I don't know if buying similar drive will get you TRIM to be auto-enabled in Lion. User @kukoo reports that he has bought an OEM-SSD which auto-enabled TRIM in Lion after installation. [2]
According to user @bmike, Apple usually uses custom firmware . [3]
Is enabling TRIM necessary?
User @cksum has covered this as a part of his answer to a post &quot;Optimize MacBook Pro for internal SSD+HDD drives&quot;.