Official licenses are typically categorized by the number of remote PCs they authorize:
Famously Reliable Software (the developers) offers free trial versions. Test the trial to see if the speed fits your workflow. If it does, the one-time license fee is a solid investment for professional administration.
Radmin Server 3.5 is a remote access software that allows users to remotely control and manage Windows-based computers. It provides secure and reliable access to remote computers, making it a popular choice among IT professionals, network administrators, and individuals who need to access their home or office computers remotely.