PAYWARE
Evidence that all MS software is malware can be found   HERE
.DO NOT INSTALL MCAFEE ANTIVIRUS!  You get nagged with popups about updates, and It is very difficult to un-install  (REVO UNINSTALLER does
not work because McAfee somehow prevents itself  from being detected).

STARTLOGIC (Web Hosting)
For about $11 per month ($400 for 3 years) you get many GBs of site size, many GBs of email space, and weekly updates on visitor stats. It also offers many other features
that I have not taken advantage of. You do not have to use its web site publisher, with its (probable) nefarious addenda.  Simply upload your website from something such as
WEBEX (free) or DREAMWEAVER (anual rental).

PAPERPORT  Now called Kofax and available only for an annual rental fee.

MATHTYPE
The original full version of MS Office's Equation Editor that is no longer installed on any version of MS Office. Mathtype has been bought out by WIRIS, a Spanish math education
based in Barcelona. Evidently impoverished MS did not want to pay a licence fee to WIRIS for a competent equation editor(?), or perhaps WIRIS did not wish to deal with Microsoft. 
I decided to pony up for Mathtype 7 as well as MS Office 365 for annual fees. Once installed it also works fine with WORDPERFECT.

MATLAB
Probably  the best mathematical computation software on the market. $150 for up to 2 computers with the same OS. Trivial installation for Win10 and probably for Mac OSX.
     Linux may be problematic (it seems that only command line uses are supported?). For Linux Mint, after getting the license number etc and downloading, you will not see any
installation file. On the command line immediately after downloading enter 'sudo ./install' will install the app. After that execution problems will still occur - work in progress:
(1) Upon opening the app several error messages may appear that are associated with plotting. Programs will run but plots will be blank. This can be corrected (for the current
session only) by entering in the terminal mode "export MESA_LOADER_DRIVER_OVERLOAD=i1965; matlab"
(2) This will continue to work only for the current session (minimizing and starting another session will not work).

MAPLE
Excellent Canadan software from the University of Waterloo that is comparable to (beter than?)  MATHEMATICA.

USB POWERED PORT
Regular electrronic stores such as BEST BUY usually (always?) stock powered ports nowadays that require drivers for specific operating systems such as OSX or Windows10, but
rarely if ever Linux. One brand that does not require drivers is SABRENT (about $40 from either Amazon or the Sabrent website HERE).
 NOTE (added 11/22/22): Printers connected to Win10/11 by USB may not work! Microsoft claims to have a fix by installing an OS modification but in my experience it that it
does not work - the installation I tried just re-installed  Edge (that I immediately un-installed using free REVO UNINSTALLER)