The leading global inventory, reservation,
and ticketing system for public transport

S3 Passenger is a fully scalable and modular web-based platform, able to handle millions of transactions per day.
Sqills supports the public transport industry in becoming the customers’ preferred mode of transport.
Powerful and innovative to exceed your needs in the years to come, flexible enough through APIs
to connect with your existing infrastructure.

With more than 38 operators across 10 countries, we are just starting to develop our community
of users as S3 Passenger is the public transport industry’s system of choice.

Follow in the footsteps of leading operators such as SNCF, SJ, Eurostar, VIA Rail and choose S3 Passenger.

10.5 billion journey searches
85 ms response time
172.5 million passenger segments
89 Net promoter score

Unique Selling Points

  • Global leading SaaS reservation, inventory, ticketing, distribution product
  • Innovation and product evolution at its core, continuous product development to meet market expectations
  • New functionalities and updates constantly added (weekly releases)
  • Proven product mitigates operational risks
  • Cost efficient solution vs expensive bespoke software development and related maintenance and upgrades
  • Hands-on user training supported with over 10.000 pages of detailed functional and technical documentation
  • Powerful after sales functions such as service disruption management, rebooking, cancellations, and automated refunds help to restore customer satisfaction and save on operational costs
  • Wide range of API’s facilitating the integration in operator’s IT landscape
  • Strong customer involvement in product roadmap and prioritisation
  • Customers are pushing industry standardisation and interoperability

1 real time system 4 focus areas

  • Self-service. Provide operators' passengers easy and efficient self-services to create and change bookings

  • Best global system. Offers operators a powerful, flexible, and cutting edge-SaaS product to replace their legacy reservation systems and effectively battle for market share and customer preference

  • Collaboration. Leverage operator’s user experience and industry input in ongoing S3P innovations, to remain the public transport’s best in class and preferred product platform with several thousands out-of-the-box features and growing, every day

  • Quality, innovation, reliability and security are at the base of everything we do at Sqills

Customer Booking Flow Click to view more information Download product brochure

The S3P modules work together closely in a customer centric booking flow to guide customers through the ‘orientation’ phase. Customers select a journey with available inventory and products, choosing the price and conditions that match their preferences in the orientation phase.

This is followed by the ‘booking phase’ where the selection is converted to a reservation that can be completed or expanded with ancillary products and passenger information.

Finally the customer pays for the reservation, receives confirmation of the reservation, and their tickets are distributed. Activities are orchestrated by the S3P modules shown here:

Orientation phase

Booking phase

Retrieve travel options
Retrieve products
and prices
Store customer information (optional)
Fulfill purchased tickets
Retrieve availability
Create provisional booking + reserve seats
Register payment of
the booking
An S3 Passenger visual tour

We can imagine our comprehensive solution appears overwhelming. That's why we offer a brief visual tour to help you understand it even better...

Play video

Constant evolution

Our industry, operator needs, and customer demands are constantly evolving, S3 Passenger can quickly adapt and evolve where needed to ensure that it meets current and future needs. Continuous deployment paired with SaaS means faster distribution, earlier access to new features to customer, smaller deliveries, and ensuring customers always have the latest bug fixes and improvements. In addition, current operators are involved in the evolution of the product through the User Story Marketplace.

Multi-channel distribution

  • The strength of S3P is represented by its core modules combined with sales and distribution API’s
  • All modules are managed through a single GUI back office environment (browser accessible), offering users an easy to use S3P platform.
  • Sales and distribution channel integration is facilitated with a standardised (and well-documented) set of API’s
  • Configurable prices, rules & conditions per distribution channel
  • Operators can create their own tailor-made (B2C) customer booking experience
  • S3P can be integrated with any client system based on web technology, mobile technology or other types of API driven (global) distribution channels such as ticket vending machines, station desk sales and B2B partner integrations.
How well do you know S3 Passenger?

Do you feel confident that you know our product? Take our quiz and find out for yourself!

S3 Passenger Quiz
Latest updates
S3 Passenger is constantly evolving and improving, despite the fact that Sqills uses continuous deployment, these are a few of the key changes and highlights
Feb 2023
S3 February 2023
Jan 2023
S3 January 2023
Dec 2022
S3 December 2022
Nov 2022
S3 November 2022
Oct 2022
S3 October 2022

Our customers

With a continuously growing list of S3 Passenger users, Sqills offers an internationally proven solution.


S3 February 2023

This February, not just for Valentine's Day, we are sure that S3 Passenger has a number of interesting updates that you are going to love.
  • The ability to make trips booked on a travel pass explicitly “non-refundable” in the context of trip counting logic
  • SSIM export modules are now connected to S3 Navigator 2.0
  • Automatically update timetable period based on configured range in Navigator 2.0

S3 January 2023

The first number of updates for the new year. What has changed in this month?
  • Now possible to configure default settings for all vouchers that are created automatically or manually in S3 Ticket
  • Seating preferences are captured that were requested by the client during seat allocation
  • Allow a leg constraint rule to be defined in a way that affects multiple inventory classes, rather than just all inventory classes.

S3 December 2022

The latest updates for December 2022
  • New “informed travel options search” feature in S3 Navigator 2.0
  • Moved Discount amount calculation logic into Pricing Engine 2.0 context
  • Pricing Engine in Fare 2.0 context, that can calculate prices based on a proprietary expression language and dedicated self-designed data tables
  • In Navigator 2.0, allow independent management of transfer rules that may or may not be specific to stops, services or a flexible range of “attributes” of connections

S3 November 2022

The latest updates for November 2022
  • Extension of the seating algorithm, allowing Attempts to skip seats with reserved seat properties
  • New fee calculation logic in after-sales for “Per Passenger Journey”
  • Extend the conflict type codes in S3 Ticket related to timetable changes

S3 October 2022

The latest updates for October 2022
  • Ability to apply discounts sequentially instead of summated
  • Organisation access code to switch between organisations as an agent
  • Capturing of “travel document” details per passenger in S3 Ticket for usage in passenger manifests and validation procedures