I used Autofill Magic - love it, but I'm lazy to the do work even the small amount. It's easy to use, cheap lifetime version, guy is always active here...
RankerX - not really happy as it's kinda forcing me to build links I don't need like T2. Also, I saw some really bad links. Software will put the whole damn article in the description or BIO and sometimes place link that's not even clickable. I feel like they are focusing on quantity rather then quality. I also noticed a good amount of failed registrations (I used private proxies fyi). Not bashing the software, just my experience.
Truboweb - tried the trial, didn't really like it a lot, but I like it more than RankerX to be honest with you. Now I'm doing another, proper trial this time to see if it works for me.
FCS - amazing piece of software, worked wonders. But, that was long time ago. Since it got sold (at least that's what the owner told us) it went to shit. High fail rate, can't create accounts... Same thing happen with Servinio hosting. They were fucking amazing and then guy sold it to some other firm and it went to shit.
I'm thinking I'll just stick with Autofill Magic because you don't have to do much work and you can easily create a lot of great stuff with it. And I combine it with Turboweb for some more automated link building. Will use GSA for T2 and that's it. Or maybe even RankerX for T2, but definitely not for T1. Don't know. They have great reviews, good support, nice tool, but still, don't like that they have so many websites and you can't actually choose where you want link, only how many and like I said, some of the links are really bad and looks spammy as fuck. But then again, that's just me. If they offer trial, just go and try it like I did. I used it for a month, didn't like it, I canceled my subscription and went to search for something else.