- The player character generator is known as CharGen.
- ToolSets exist as hardcopy in-rulebook creation sequences and as automated, online utility programs.
Library Data Referral Tree
The T5 Core Rules contains ToolSets for the following functions:
- CreatureMaker (In version 5.09, "BeastMaker")
- Traveller Sophont Creation System (SophontMaker)
- WorldMaker AKA T5 WorldMaker
T5 External Link/s
- Armor & Gun Maker at Traveller5.net
- Omni Vehicle Maker at Traveller5.net
- Plant Generator at Traveller5.net
- Robot Maker at Traveller5.net
- Traveller5 World Builder
- Traveller Worlds: Maps & Systems
- Vehicle Maker at Traveller5.net
- Word Generator at Traveller5.net
- World Builder at Traveller5.net
CharGen and various simulators for making various things across a broad spectrum from NPCs to objects to armor to weaponry to vehicles to starships and more have been a consistent feature of the game since 1977. 
Many ToolSets have been converted into online calculators and similar programs. 
ToolSets are a major part of T5 and many were created throughout the development and playtesting of the T5 Core Rules. Not all of them made it to the final cut and not all of them are featured in the T5 Core Rules. 
- Every version has some type of CharGen. In most versions, it is possible for a traveller to die during CharGen due to random dice rolls. In Mongoose Traveller, both first and Second Edition, this is at most a choice, never forced: if the rolls would have resulted in death, a traveller can instead go into medical debt to stay alive. GURPS Traveller does not use lifepath-style CharGen, avoiding the issue entirely, instead substituting a point-buy system.
- Mongoose Traveller Second Edition allows one to designate an arbitrary hull size, with simple formulas to calculate maneuver drive and jump drive requirements for a given performance (and power plant requirements for those and other systems, particularly energy weapons). The New Era and GURPS Traveller have more complex formulas, allowing for finer detail. Most other versions require one to pick among pre-made sizes of hull, maneuver drive, and jump drive, then look up the performance on tables, and select power plant to be at least equal to those (usually with no regard for other systems, including weapons). Some find one of these approaches far easier to use, or better suited to their use cases, than the others.
- For many, deciding between versions is primarily just deciding between ToolSets.