Spytector keylogger can install silently.
In the trial version, whenever the keylogger is run a warning message pops up and the user must click YES to agree to install the keylogger. In the full version the warning can be completely removed (or customized!) and Spytector keylogger is installing silently.
Spytector is a shareware keylogger (spy software). The trial version of Spytector is fully functional, but the module will be automatically uninstalled after sending 3 logs and the warning message cannot be changed (there's a pop-up warning displayed whenever the keylogger is started). You are able to evaluate its functionality for 7 days before making a purchase. If you decide to buy Spytector, besides the unlimited access, you'll receive free updates (new versions) and premier technical support.
The full version of Spytector will be undetected when scanned (RightClick -> Scan) with the following antiviruses: Norton AV, Malwarebytes, Kaspersky AV, McAfee, Panda, AVG, Avast, TrendMicro. You have 3 license options ($64.95, $99.95, $229.95), accordingly with the support period you buy (2 months, 12 months, life-time).
The license for the full version of Spytector keylogger can be purchased
here. Once your payment has been completed, the required registration
information and a download link for the full version are delivered via email as soon as possible.