What games are best suited for 2 or 3 boxing?

[Ualaa]

I like that the Bard can do a Melody.
The equivalent to /cast 1 3 2 1 3 4 12... which will then cycle through those infinitely, until interrupted or cancelled.

Other classes can do... /cast one, pause xx, cast two... up to six (or was it five) spells.

And that is with their base macro system.
You're not using any delays, within your software.

The Warrior/Tank mercenary is supposed to be strong enough, for any solo character to get to the mid 60s without issue.
The Healer mercenary will occasionally let you die, but the 'Gold/Paid' version is supposed to do that less frequently; people have suggested running two healers, one being the Mercenary and another your own toon, who might also slow or buff or whatever.

I was interested in a full six box, without mercs.
A pet can effectively tank single-group content (at least according to numerous people on EQ related forums), but any player in melee will take threat automatically.
A pet is a pretty useless tank, in multi-group content... or their equivalent of instanced raids.
Also, content from 3-4 expansions previous is still challenging... with possibly a few items that are worth equipping... so, doing older raids isn't always an option like it is in Warcraft; although with 14 or 15 expansions, you could do content from 5-6 expansions previous... and have many more encounters to experience than all of Warcraft (even counting up to current raids).

[Lyonheart]

I like that the Bard can do a Melody.
The equivalent to /cast 1 3 2 1 3 4 12... which will then cycle through those infinitely, until interrupted or cancelled.

Other classes can do... /cast one, pause xx, cast two... up to six (or was it five) spells.

And that is with their base macro system.
You're not using any delays, within your software.

The Warrior/Tank mercenary is supposed to be strong enough, for any solo character to get to the mid 60s without issue.
The Healer mercenary will occasionally let you die, but the 'Gold/Paid' version is supposed to do that less frequently; people have suggested running two healers, one being the Mercenary and another your own toon, who might also slow or buff or whatever.

I was interested in a full six box, without mercs.
A pet can effectively tank single-group content (at least according to numerous people on EQ related forums), but any player in melee will take threat automatically.
A pet is a pretty useless tank, in multi-group content... or their equivalent of instanced raids.
Also, content from 3-4 expansions previous is still challenging... with possibly a few items that are worth equipping... so, doing older raids isn't always an option like it is in Warcraft; although with 14 or 15 expansions, you could do content from 5-6 expansions previous... and have many more encounters to experience than all of Warcraft (even counting up to current raids).

If you have a slower/CCr in your trio.. mercs can tank and heal perfectly.. I have died more the player healers not healing me in time than my mercs.. and the tank is good all the way to the end ( non raid content) if you get the best one ( have to do a long quest chain to open it up ) Call J5 ( journeyman level 5 mercs ) With my shaman ranger and wizard + tank, heals dps or 2nd healer mercs.. i was doing group content safely.. You just have to pull smart. ( having a good pulling class helps as well. ) Bards..Monks..SKs..Rogues and rangers are exelent pullers.. Skilled shaman..necros and enchanters can pull as well. You have to have some method of agro dump ( FD ) or CC.. like roots and mezes.