Not as part of the 31" Versidex MEGA-ncw by itself. You can buy a Lamello joiner from us. We are now a full-line Lamello products dealer. If you already have a joiner or mortising machine, it will likely work with the MEGA, but you will have to make capacity concessions to do that, due to interference between the dust port/hose, and the right-hand stationary fence and/or the left-hand spring closer on the Crosspanel. More on this below.
We offer the Versidex MEGA Deluxe and Premier packages, which do come with joiners. Look under Products in the Menu bar.
Using another brand of joiner means that templates inscribed for your machine will sometimes not be optimal in capacity, depending on how you choose to deal with the dust port and/or spring closer obstruction. The MEGA is optimized for all three of the Lamello joiners, but ONLY when they are fitted with the 1" dust port. When fitted with their other dust ports, they suffer the same loss of capacity for certain operations.
You won't be losing capacity in terms of how big a panel will fit, that doesn't change. The loss of capacity relates to how close to the REAR edge your 1st mortise can be. Even this can be overcome by ALWAYS using fence spacers, but then your maximum panel size WILL be reduced. Dealing with this issue may favor one solution over the other, depending on your cabinet design and your joiner.
You will also have to work out a dust collection hose system that functions well. You absolutely must use a powered vacuum system. We use and recommend the Lamello 1" dust hose and its matching 1" dust port. Very flexible and lightweight, we Velcro™ it to the joiner's power cord and use a 1.5" swiveling D-ring under the platform, which it will pass through, to control it. Other hoses might not fit through this D-ring, which is the largest diameter one we can find, but you might be able to rig up a suitable alternative.
We are certain only of the Lamello joiners, only when used with a 1" dust port and their 1" dust collection hose, and only when coupled with a vacuum system producing 175cfm or more, and 60" of static pressure or more, as being capable of adequate dust and debris control. You will see the phrase, throughout this website. We can't say that warning enough, and you can't hear it too much. Trying to control dust with lesser performance than that listed above is a losing battle, and your results may, on random occasions, be poor. You will likely want to blame the MEGA, but it will be poor dust & debris control that are at fault.
You're rather on your own with another joiner brand, until we can gather enough feedback about successful adaptations of those other brands from customers who chose to go that route. Lamello was the only company that provided a testing unit to us, and from those tests in the MEGA environment, we were so pleased that we asked to become a Lamello dealer. That said, you are welcome to choose and/or use whatever brand joiner you prefer. The Versidex MEGA-ncw is not involved in the actual milling process, it justs provides an amazing indexing interface.