Nice additions to this table would be:

• Interface. Object oriented or functional? Are the method or function names perlish?
• DBD support. Are only certain DBDs supported or does it work with any existing DBD?
• DSN abstraction. Is the DSN abstracted or does it use normal DBI DSNs?
• Access to internals. So they wrap, but can you access the DBHs and STHs? If you can't access the STH directly, can you access its attributes?
• Multiple connections. Does the interface allow you to use multiple databases? How is this done? (OO? select-ish? both?)
• Multiple queries. Can multiple results from multiple queries be fetched or is there only one current STH? Can you use STHs from different databases, if multiple connections are supported?

To answer these for DBIx::Simple: OO; any; DBI; Current version: no, 1.20 and newer: yes, yes; yes(OO); yes, yes.

1.20 will be out Real Soon Now. (If you want to test the development version, let me know)