Unfortunately, Lenovo Software does not have an alternative product in which to migrate. To our knowledge, there just isn't any other single product out there that can do all that Lenovo Unified Workspace (LUW) was able to do.
In searching for replacement product(s), you may find it helpful to use search terms like 'reverse proxy' and 'HTML5 Remote Desktop'. While there are a number of products that may help meet your need, we are limited in the suggestions we can offer. If you are an educational institution, ClassLink may help meet some of your needs, see the link and disclaimer below:
https://www.classlink.com/classlink-101Please note that (a) ClassLink is a service/software solution provided by a third party and is unrelated to Lenovo/Stoneware, (b) Lenovo/Stoneware is suggesting ClassLink as a possible alternate product as a courtesy to our customers only, and Lenovo/Stoneware does not necessarily endorse the ClassLink product, (c) Lenovo/Stoneware does not warrant or otherwise guarantee that the product will be sufficient for your company's purposes, and disclaims any and all liability with respect to your company's purchase and/or use of ClassLink, and (d) any sales arrangement ultimately agreed to will be directly between your company and ClassLink.