Free Alternatives to "Titanium Backup Pro" I have recently rooted my Samsung Galaxy Y phone and installed the Titanium Backup (free version). Anyhow, I am not satisfied with it as many of the features are unavailable and I am asked to get the paid version.

My Question is: Are there any free alternatives to the services offered in Titanium Backup Pro?

I am in particular looking for the "Convert to user app" and "Enable 'multiple profiles' for this app" features.
I'm not aware of a full-blown replacement for Titanium Backup, but there are solutions for the specific functions you're after:

Recent versions of Link2SD can convert user apps to system apps and vice versa (available on Google Play).

SwitchMe offers a solution for switching among multiple user profiles (available on Google Play). The free version is limited to two profiles and "no security features".