Traveller is practically unique in that character generation is almost a game in itself. The process of generating a character recognizes the passage of time and its effects, and events early in the process can affect those that come after.
Nevertheless, there are those who have felt that the officially presented process is incomplete or otherwise deficient, and they have chosen to modify or expand on that process in some way.
- Special Operations (Commandos) (Ken Murphy) A career path for characters that need to be MacGyver or the A-Team.
- An Alternative Basic Character Generation System for Classic Traveller (James Jensen) A character generation system that requires little more effort than the Classic Traveller basic system, but provides characters that are as well-developed as those from the Classic Traveller extended system.
- Academia (Robert Weaver) A Classic Traveller career for the perpetual student, or for his teachers.
- Character Generation for Adolescents (Greg Caires) Teenagers, from 12 to 17, are potentially viable characters
- Decorations in Marc Miller's Traveller (Scott Galliand) An extensive system of rewards for outstanding performance in prior careers.
- Expanding and Integrating Character Generation (Ken Bearden) A detailed character generation procedure, with exampled tuned to a sample campaign.
- John Law: Character Generation for Traveller/MegaTraveller (Russel Bornschlegel with Jeff Zeitlin) A Law Enforcement career for Classic Traveller and MegaTraveller.
- John Law II: Character Generation for Traveller: The New Era (Jeff Zeitlin) A more flexible (and probably more realistic) procedure for generating Law Enforcement characters in Traveller: The New Era.
- John Law III: Police Character Generation in MegaTraveller (David Jaques-Watson) An alternative Law Enforcement career for MegaTraveller.
- John Law IV: Ministry of Justice Character Generation for MegaTraveller (David Jaques-Watson) A career definition for the Ministry of Justice.
- Generic Expanded Character Generation System (James Jensen) Enhancing the Classic Traveller character when the extended procedure isn't available.
- The Invisible Masses (Ken Murphy) Not all careers are as glamorous as the standard military ones - but some of them are surprisingly useful.
- Hoisting the Jolly Roger (Allen Shock) Piracy defined as a viable career.
- Psionic Guardians (James Ramsay) An extended career for psionic individuals in Classic Traveller
- A 'G.I. Bill' for Marc Miller's Traveller (Rich Ostorero) An alternative method to calculate a character's pension.
- Extended Career Character Generation for Marc Miller's Traveller (Michael Hughes) Applying the extended career generation procedure from Classic Traveller or MegaTraveller to T4.
- Zhodani Character Generation for Traveller: The New Era (Peter Gray) Applying the character generation rules for TNE to Zhodani.
- The Order of Zar-Tis (Jason Kemp) A MegaTraveller Prior Career for Daryen (Darrian) characters.
- The Order of Zar-Tis (Jason Kemp) A Daryen Prestige Class for Traveller T20
- Relic Hunter for TNE (Daryl Frewing) Not all archaeology is for the science.
- The Imperial Secret Service (Harry Bryan) Invisible, but effective
- Self-Improvement for TNE (Daryl Frewing) Taking a term off to develop in your own way.
- Scientists: An Elaborated Career for Classic Traveller (Neal Oldham) Appealing to the nerd in all of us...
- Underworld Characters (Harry Bryan) Not all prior careers are on the 'light' side of the law.
- Warrant Officer: An Expansion for Military Careers in... (Jeff Wheeler) Senior in experience, junior in rank - an ideal combination for some jobs.
- Wooden Ships and Iron Men: Low-Tech Wet Navy for Clas... (Timothy Collinson) A career definition for low-tech wet navies, for Classic Traveller
- Wooden Ships and Iron Men: Low-Tech Wet Navy for Mong... (Timothy Collinson) A career definition for low-tech wet navies, for Mongoose Traveller
- AI Specialist for TNE (Daryl Frewing) Virus is more than a computer program, and takes more than Computer skill to understand.
- A Life Less Ordinary: Alternative Character Generatio... (Sam Lockwood) Fine-tuning the Mongoose Traveller character generation procedure to reflect what a Traveller is.
- Investigator: A Basic Career for Classic Traveller (Michael Brown) When you need someone to look into it.
- Surgisilena (Michael Brown) Professional Companions, but not prostitutes.
- The "Other" Option: An Expanded Career for Classic Traveller (Michael Brown) The sixth basic career, expanded
- Martial Artists: A Career For Mongoose Traveller (Gary Wilkins) Fighting is more than just brawling
- The Tavrchedl': A Zhodani Classic Traveller Career (Jeff Zeitlin) The Thought Police as Mental Health professionals
- Star Legion Character Generation (Ewan Quibell) The third armed force from the "Beyond the Extents" campaign
- Prison Inmate (Michael Brown) Doing the time, even if you didn't actually do the crime.
- Martial Artist: A Career for Mongoose Traveller 1st Ed... (Steven Pustay) Making a career out of fighting
- The Corporate Repo Career (Joshua Levy) Getting a seized ship back where it belongs
- Quick Character Generation for Conventions (Marc Miller with Jeff Zeitlin) When you have limited time, you don't have to have limited characters
- Quick Hiver Character Generation for Conventions (Paul Anuni) Hiver characters, based on Marc Miller’s quick generation for cons.
- Quick Droyne Character Generation for Conventions (Paul Anuni) Droyne characters, based on Marc Miller’s quick generation for cons.
- The Travellers' Aid Society: Character Generation for Classic Traveller (Greg Alan Caires) You hear about the organization, now meet the people (and be one)
- Traveller's Aide: A Basic Career for Classic Traveller (Greg Alan Caires) A simplified and quicker process for TAS employees
- Consulting Detective (Timothy Collinson) When Lieutenants Columbo and Kojak are out of their depths, ...
- Deep Space Rescue Corps: A Career for Classic Traveller and MegaTraveller (Greg Alan Caires) A different take on an old idea
- The "Sappers", Redux (Greg Caires) The Deep Space Rescue Corps, Updated
- Bounty Hunting Made Easy (Mark McCabe) Bring them back alive!
- Spacecraft Classification Society (Chris Barlow) A career for Mongoose Traveller for the people who ensure that starships are spaceworthy
- Native Foreigners: An Expanded Career for Barbarians (Michael Brown) "Unsophisticated" isn't "stupid"
- Hivers for Cepheus Engine (Jeff Zeitlin) The Classic Traveller Alien Module careers, redone for Cepheus Engine
- Scrapper: A New Career for Mongoose Traveller (Gaizka Márquez, translated by Google and Jeff Zeitlin) A planet-bound career for the lowest of the low.
- The Imperial Starport Authority (Chris Barlow) Keeping space orderly
- Driver: A Career for Traveller (Gaizka Márquez, translated by Google and Jeff Zeitlin) Local transport may not always be routine
- Building Starships as a Traveller Career (Chris Barlow) Starship acquisition from the other side
- Physician Career for Cepheus Deluxe (Brett Kruger) A focused career option
Additionally, Ken Pick’s material on the Shavian Empire Campaign includes a set of careers to replace or supplement the ‘Other’ career from the standard rules.
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