NoMachine no longer provides updates for NX 3, or earlier, and compatibility with this version ceased with the release of NoMachine 6.
Version 4 is no longer supported. Customers who are still using version 4 should contact us to know what their update and renewal options are.
NX Web Companion - this product is now discontinued. It was available with version 3 and also in later versions via special request for customers using versions 4 and 5. It has been replaced by the "Web Player" functionality (browser-based access) provided in all Enterprise products.
NX Server Manager - this product was available with version 3 and has been discontinued.
For more information about supported versions and NoMachine product lifecycles, please consult: https://www.nomachine.com/AR06P00985.