[planteen]

Not a Mars spacecraft, but SQLite has definitely been used on some CubeSat missions in LEO. I know because I'm the one who did it. :-)

[oso2k]

Was it a commercial or government CubeSat?

[planteen]

As far as I know, it has flown on two government (civil space) missions. I'm not longer at the company so I don't know what else it has or will go into.

[justinclift]

Cool. :)