Question: Ivel Z3 and Kenbak-1 are both what kind of commercial product?

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Laszlo Mail: Laszlo Mail is a commercial webmail product developed by Laszlo Systems, located in San Mateo, CA.  The Laszlo Mail software may be purchased for installation and deployment on a company's webserver, or individuals may sign up for a free account at laszlomail.com.  The commercial product was initially introduced in Nov 2004.  Laszlo Systems launched laszlomail.com as a free service in Nov 2005, running in parallel to its commercial offering.  Laszlo Mail requires a Flash player compatible with Flash version 8 or later.  A DHTML version of Laszlo Mail is currently under development.

OpenAFS: OpenAFS is an open source implementation of the Andrew distributed file system (AFS).  AFS was originally developed at Carnegie Mellon University, and developed as a commercial product by the Transarc Corporation, which was subsequently acquired by IBM.  At "LinuxWorld" on 15 August 2000, IBM announced their plans to release a version of their commercial AFS product under the IBM Public License.  This became OpenAFS.  Today, OpenAFS is actively developed for a wide range of operating system families including: AIX, Mac OS X, Darwin, HP-UX, Irix, Solaris, Linux, Microsoft Windows, FreeBSD, NetBSD and OpenBSD.

Turbo C++: Turbo C++ is a discontinued C++ compiler and integrated development environment and computer language originally from Borland.  Most recently it was distributed by Embarcadero Technologies, which acquired all of Borland's compiler tools with the purchase of its CodeGear division in 2008.  The original Turbo C++ product line was put on hold after 1994 and was revived in 2006 as an introductory-level IDE, essentially a stripped-down version of their flagship C++Builder.  Turbo C++ 2006 was released on September 5, 2006 and was available in 'Explorer' and 'Professional' editions.  The Explorer edition was free to download and distribute while the Professional edition was a commercial product.  In October 2009 Embarcadero Technologies discontinued support of its 2006 C++ editions.  As such, the Explorer edition is no longer available for download and the Professional edition is no longer available for purchase from Embarcadero Technologies.  Turbo C++ is succeeded by C++Builder.

Sony Xperia Z3 Tablet Compact: The Sony Xperia Z3 Tablet Compact is a waterproof & dustproof compact Android tablet manufactured and designed by Sony.  It was unveiled during a press conference at IFA 2014 on September 3, 2014 along with the Xperia Z3 and Xperia Z3 Compact.  It is the manufacture's first 8.0 inch (203.2 mm) tablet.  The tablet was the winner of the Reddot Award 2015 for the product design.

Certification mark: A certification mark (or conformity mark) on a commercial product often indicates the existence of an accepted product standard or regulation and a claim that the manufacturer has tested or verified the product to certify compliance with that standard or regulation.  The specific specification, test methods, and frequency of testing are published by the standards organization.  Certification listing does not necessarily guarantee fitness for use.

Watcom C/C++: Watcom C/C++ (currently Open Watcom C/C++) is an integrated development environment (IDE) product from Watcom International Corporation for the C, C++, and Fortran programming languages. Watcom C/C++ was a commercial product until it was discontinued, then released as freeware under the name Open Watcom C/C++.  It features tools for developing and debugging code for MS-DOS, OS/2, Windows, Linux operating systems, which are based upon x86, IA-32, x86-64 compatible processors.

Ivel Z3: Ivel Z3 was an Apple IIe compatible computer developed by Ivasim in 1980s.

Screwball (ice cream): A screwball is a type of frozen confection that first appeared in the 1970s.  It consists of a flavored sorbet like frozen dessert inside a conical, plastic cup with a gumball at the bottom; the flavor of the ice is usually raspberry ripple.  Several prominent brands produce screwballs, for example Asda, Popsicle, and Eskimo Pie.  The name was originally a commercial product name but is now used to describe all such ice cream treats, whoever makes them.  The product does not qualify as ice cream under USDA guidelines.

Kenbak-1: The Kenbak-1 is considered by the Computer History Museum and the American Computer Museum to be the world's first "personal computer", invented by John V. Blankenbaker (1930-) of Kenbak Corporation in 1970, and first sold in early 1971.  Only 50 machines were ever built.  The system first sold for US$750.  Today only 14 machines are believed to exist worldwide, in the hands of various collectors.  Production of the Kenbak-1 stopped in 1973 as Kenbak failed, and was taken over by CTI Education Products, Inc.  CTI rebranded the inventory and renamed it the H5050, though sales remained elusive.

Group-Office: Group-Office is a PHP based dual license commercial/open source groupware and CRM and DMS product developed by the Dutch company Intermesh.  The open source version, Group-Office Community, is licensed under the AGPL, and is available via SourceForge.  GroupOffice Professional is a commercial product and offers additionally mobile synchronisation, project management and time tracking.

Supporting paragraphs: Ivel Z3 Kenbak-1
Answer: computer