Actually the download links and the installers are the same and working fine for InkScape & VNC Enterprise! Maybe it's something related to your firewall or even you ISP?
About CutePDF Writer we actually stopped supporting it for now since it has a lot of numbers in "Detection Ratio" from VirusTotal, Here is an example:
https://www.virustotal.com/en/file/fed425b324ef6d7214fc4dba5109178ce58a568dab0afed39255e726e0992064/analysis/1496146468/
GoodSync has a new minor update so we will add it in today's update.
About CutePDF Writer we actually stopped supporting it for now since it has a lot of numbers in "Detection Ratio" from VirusTotal, Here is an example:
https://www.virustotal.com/en/file/fed425b324ef6d7214fc4dba5109178ce58a568dab0afed39255e726e0992064/analysis/1496146468/
GoodSync has a new minor update so we will add it in today's update.