You are maybe confuse sometime when i talk about the different paid to click script that the sites use. If we want to make it simple script=software and you need a software to make a PTC. Got it ? Or you already know that and there are just some wich you have  preferences or you wanna make your own site but don’t know which one exist.
Well i am not going to explain how to make a  site, what hosting to use ect but just talking about the different scripts existing

Gen4+
A professional script highly secure and develloped with a good team of programmers. They are on the market since long time and have a strong reputation online, personally this is the one i prefer
More details: http://ptcpay.com/

Evolutionscript
Another strong PTC script, wich have all the features needed like Gen4+ this one is a lot of used by news sites since some time and quite popular
More details: http://evolutionscript.com/

Zeus:
Outdated It was a popular script in the past and right now i don’t know any site using it. I don’t have any link to show you about Zeus. As far as i remember this script needed good knowledges in php

nTen
From Zeus creators this is a more develloped than the previous with more features for owners like theme editing, ect
More details: http://xeoncoder.com/

Clixscript:
An amazing script develloped by experienced coders there is all features wanted by members and owners a good one
More details: http://www.incentivescripts.com/

Buxhost:
Quite different but still very strong Buxhost is different from others script because you just need to go on their website, choose a name for your site and you are up to go. So you don’t really own and manage your domain and hosting you just purchase it from buxhost.
More details: https://www.buxhost.com

UseTitan:
This script is just… WOW !!! intuitive and professional. A solid and secure software with amazing features; check out
More details: https://usetitan.com/#!/page_home

Shiftcode:
This one is an old GPT script (Jillsclickcorner is using it) I have never tried a demo version so can’t say from the admin part But seems not popular and mainly used by PTR or GPT sites and anyway will be shutting down the Shiftcode Service as of 1/1/2015
More details: http://shiftcode.com

YourOwnBux:
LOL don’t even think about using this script, i call it a clown script. You are not serious if you use that, and your site will appear like a clown site.

Aurora scripts
Most used are based on an old version of Aurora script named  “Aurora 4.0.8”  As far as i know here is a list of script build on it

SDR series : or Script Done Rights. There are differents versions up to SDR3
More details: http://scriptsdoneright.com

MRV Series : or Maderight Version Scripts is aslo build  with Aurora, there are differents version up to MRV5
More details: http://www.maderitehosting.com/services.htm

ESV Scripts : series of scripts also based on the aurora 4.0.8 version , with modifications and some changes , still now the available versions are : up to version 3
More details: http://elitescripts.info/index.php?route=common/home

PTCShop : not popular but i like it, I feel like the look of a Bux sites with  aurora  features; really  different with previous versions
More details: http://www.ptcshop.com/

Custom PTC script: Some sites use a custom script made by themself and theirs owns devellopper to maintain and update when needed. Clixsense and Neobux for exemple have a customized Paid to click script make with theirs own programmers.

You found a free nulled script and plan to use it ? Well this is bad my friends and there are severals why it is not recommanded. Do you think people share script for free on the web via some forums, blogs, share files sites ect. All of them are not secure, vulnerable and contain backdoors, so if you want wake up a day and see all your paypal money gone with an unauthorised transaction, or some stuffs like that yeah go for it. But most of the time your site will be shutdown by the original creator witha DMCA notice.  I am not talking to you like a mother talk to her kids but this is aslo bad regarding programmers who spend thousands of hours working to create and update such software. It’s give a bad image to the industry to people who want make money online, just think about it

PTCMonitorHelp and Tips
You are maybe confuse sometime when i talk about the different paid to click script that the sites use. If we want to make it simple script=software and you need a software to make a PTC. Got it ? Or you already know that and there are just some...