OK, let's see what we can come up with here. I'm not sure Google will be much help even with the acronyms explained because almost everything we used was designed to be used specifically by us.
SAMA, as noted earlier, stood for Station Administration Management Aid. It started life as little more than an electronic leave record which made ration accounting much easier than the manual system we had before. Over the 15 years or so that we used it, it developed into something much more but it still required clerks to input and manage data. Unicom did a similar job but SAMA was streets ahead (although still a long way behind the private sector).
From the late 90s onwards we also used BI-Query alongside SAMA. BI-Query (originally called GQL - General Queries List) was an interrogation tool which allowed clerks to write and execute all manner of reports to manage personnel records and answer the neverending stream of random questions that bosses seemed to spend their lives dreaming up. We are now much more limited in the kinds of reports we can run without recourse to higher authority, not because we don't have the information available to us but because our capacity for writing one-off queries has been greatly reduced.
Inputs to SAMA did not have a direct effect on pay, which was managed by a system called PSSL (no idea what it stood for, sorry). PSSL was a very simple but effective program written in a language close to machine code on an early era mainframe. Very good if you knew how to use it well but almost the only people who did were stereotypical long-haired, unshaven, sandal-wearing nerds (Humble Scribe is probably going to kill me for that!).
SPA (Station Public Accounts) was another simple but effective program used for recording the payment of allowances and bills. The RN ripped it off us because it did its job very well although I believe the Army preferred to maintain manual ledgers, at least that's what we all had to use at SHAPE.
OMIS (Operational Manpower Information System) was another great little program for monitoring who we had, employed in which posts, in operational locations. We were forced to abandon it in favour of using 'RYAN' which I'm sure you know is/was a glorified MS Access database and was a total pain to use. God bless the Joint (Army) environment!!
I'm sure others can elaborate on what I've said and can talk about some of the other systems that they know better than I do.