Tools & Platforms

StarCar is a permanently free linear star systems cartography tool. It enables GMs running sci-fi campaigns to visualize and share star maps with their players easily. It allows a lot of different customizations for orbital bodies, like planets, secondary stars, Ringworlds, Dyson Spheres, and more. GMs can add notes to individual orbital bodies, stars, and moons. The notes can be totally customizable, or use either Traveller or Stars Without Number rules. If they want, the GM can even export a stylized PDF report that details all the notes in an easy-to-follow format. And if the GM just needs something right away? StarCar will roll the dice and generate a totally randomized system: random stars, planets, and even randomized plot hooks. Once the GM is finished, they can export it in a number of different formats: PNG, WebP, or JPG, or with settings like Printer Friendly or Transparent Background. Anything exported is licensed under Creative Commons 4.0, which means the person who makes it owns it. They can even use it in any products they sell, with attribution.

A free, accessible, browser-based character creator and editable sheet for Mongoose Traveller 2022 — every roll cited, every choice logged, every character saved locally. Description Traveller Lifepath is a free, browser-based character creator and editable sheet for Mongoose Traveller 2022. It walks players through the full Mongoose 2022 lifepath — basics and species, characteristics, background skills, pre-career education (University, Army Academy, Marine Academy, Navy Academy), career terms with their full survival / event / commission / advancement loop, mustering-out, the post-creation skill package, and a final reviewable character sheet — without ever leaving a single browser tab.                                                              The tool offers three ways to set characteristics. Players who want the classic experience can have the site roll 2D × 6 into a pool and assign each value to whichever stat they like. Players who prefer their own physical dice can enter results manually; the site still tracks every DM, target, success/failure, and aging effect. Players who'd rather skip randomness entirely can use the included point-buy method (42-point budget, 2..12 per stat). PSI is rolled separately when psionics are enabled, and the Psion career unlocks accordingly.  /images/general-media/1778159165_rhvJ8xSn.png The character-creation rules are implemented as a typed effects engine — TypeScript discriminated unions with exhaustive switching — so every rule lives in one place and can be tested in isolation. The project ships with around 360 automated tests covering qualification, commission, advancement, aging crises, mishaps, life events, connections, the skill cap of 3 × (INT + EDU), pre-career education, and the Mongoose 2022 errata clarifications for Vargr and the Vacc Suit skill. A full audit trail of every rolled die, every applied DM, and every player choice is captured to a roll log that updates in real time. The post-creation sheet is a fully editable Mongoose-style character record. Skills, careers, equipment, weapons, armour, augments, connections, benefits, and free-form notes can all be edited inline; values save automatically to localStorage with cross-tab synchronisation, and the sheet is print-friendly (one panel per printed page, ink-friendly styling). Every character in the local library can be exported and re-imported as JSON for backup or for handing off between players.                                                      Two visual themes are included: a light "Little Black Books" look in the spirit of Classic Traveller, and a dark "Imperial" theme — plus a System mode that follows the operating system's light/dark preference and reacts live when it changes. Theme choice is remembered between sessions.                                                                    Accessibility is treated as a first-class concern. The interface meets WCAG 2.1 AA contrast requirements in both themes (verified by an axe-core audit suite that runs as part of the project's tooling), every interactive element has a visible keyboard focus indicator, icon-only buttons carry ARIA labels, and the layout includes a skip-to-content link for screen-reader users.            /images/general-media/1778159170_sbkOfhno.png Other features include undo across the wizard (rewinds to the relevant picker after popping a character snapshot), URL-based debug logging (?debug=1), the Connections rule for shared PC backgrounds, an aging-crisis path with medical-debt accumulation, and an honest "unofficial fan tool" disclaimer in every place it matters.                            The project is open-source under the MIT License, runs entirely client-side with no backend and no account requirement, and uses privacy-friendly analytics (no cookies). Bug reports, rules questions, and pull requests are welcome on GitHub. Links bytesbynelson.github.io - Live tool github.com - Source code github.com - Issue tracker / feedback

High Guard Rules brings Classic Traveller's Book 5: High Guard starship construction and combat rules to the web. Ship Designer walks you through building a warship from the keel up — hull, jump and maneuver drives, power plant, computer, weapons, and screens — following the Book 5 construction sequence, with every calculation (tonnage, energy points, agility, cost) handled for you automatically. Combat Arena lets you pit your designed ships against another player, or fly solo against an AI opponent — resolving the full Book 5 ship-to-ship combat sequence round by round: Battle Formation, Initiative, Range, Pre-Combat Decisions (break-off, emergency agility, surrender), Combat, Damage, Breakthrough Combat, Pursuit, and a Terminal step for boarding, repair, and crew transfer. Ship Library keeps your saved designs on hand, and Meeting Room is where you find another player and start a battle. Whether you're building a fleet, sparring with the AI, or working through a firefight against another captain, this site handles the math so you can focus on the tactics.

Nav-Fi³ is a web-based campaign companion for the Traveller RPG, covering both the classic Third Imperium setting and Mongoose's 2300AD. Run your ship like a real operation: a time-aware financial ledger tracks income, costs, mortgages, and crew payroll against each vessel's account, with automatic PENDING/POSTED transitions synced to your campaign's calendar. Plot jump routes on an interactive TravellerMap-integrated navigator, manage cargo holds and speculative trade, and let The Cube (or 2300AD's The Link) generate freight, passenger, mail, salvage, and prize contracts on demand. Multi-user by design: a Referee can grant players granular access to piloting, cargo, or finance on a per-ship basis, suspend and reinstate them without touching the roster, and everyone logs in with Google or Discord (2FA supported). Crew records track status over time — active, MIA, deceased — and every session's changes surface in an automatic "Since Last Session" recap. Two settings, one interface: pick Traveller (with full Milieu/era support) or 2300AD (Gregorian calendar, Stutterwarp drives, colonial nations) from the sidebar — same tool, faithfully adapted rules underneath.

TAS is a multi tool application for Mongoose Traveller 2E, that provides several options for players, GMs, and solo players. The Travellers app is designed to allow for guided or random character creation, rolling your own dice or letting the app roll them.  You can also track multiple characters across sub tabs, update their stats, add items and then save them, and share them with direct sharing links. They Shipyard app allows you to open and modify several classic Traveller ships, or design your own from scratch.  Save and export your ships as desired. The NPC Vault is a stripped down automated NPC creator that allows GMs to quickly create NPCs across different career archetypes, tech levels and experience levels, as well as mix archetypes.  Edit, save and export the NPCs as needed. /images/general-media/1786113792_7ncg53gt.webp   The Voidmapper tool shows you the 8x10 hex map. It lets you automatically generate a single world hex at random, a single sub sector or several sub sectors, or you can import the cannon sectors from travellermap.com.  Once you have imported your sectors, you can import ships from the Shipyard and add Characters from Travellers to that ship.  Each sector has the full trade and passenger information based on the system rules.  You can give your ship credits, track your in game trades, and passengers if your table wants to automate finding trade goods, and passengers and tracking what is on your ship and how much you spend and make.  You can also use this as a mini game to travel a system trading and trying to earn a profit.  Lastly each system has a savable notes section, random tables for encounters and details about the secondary worlds. /images/general-media/1786113857_yrNMc5pe.webp Lastly check the Ops Menu for the readme for each section for more detailed information and the up to date change log. Links tas.leweber.org - Official website