For my work as a media professional I have been using the rsync frontend arrsync to back up my work, as time machine doesn't have the features I need. Arrsync, however, has not been in development for some time, and I was wondering if anyone knew of a decent alternative.
Specifically I need something with arrsync's "unidirectional merge" function, which basically just adds new files or overwrites old files with newer versions to my backup hard drives. This allows me to remove projects from my computer I don't need immediately in order to save space, but still keeps them in backup. In other words, the function does not simply create a snapshot, but an ever-growing collection of all my past projects.
I also need something with an easy to use and understand UI. I realise I can create custom scripts for rsync, but there are other less computer literate people in my office who rely on this program as well. I have also tried simply copying things across using finder, but this becomes incredibly tedious, even with some of the smarter copying capabilities of OSX, as directory structures can be quite complex.
Sorry this has gotten quite long (I realise I have some frustratingly specific needs!) Does anyone know of a program, be it standalone of as an rsync frontend, that has these functions and is relatively up-to-date? Cheers!