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 35 operators across 9 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...

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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?

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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
Apr 2022
S3 Passenger 2022.04
Mar 2022
S3 Passenger 2022.03
Feb 2022
S3 Passenger 2022.02
Jan 2022
S3 Passenger 2022.01
Dec 2021
S3 Passenger 2021.11

Our customers

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


S3 Passenger 2022.04

It is no joke that early april already saw a number of different new concepts introduced. These included some new Travel Pas features, new booking details, bookings that need to be changed due to factors that do not depend on the customer, and much more.
  • Configuration of Travel Pas templates
  • Returning more information for in API searches
  • Maintain Price Logic

S3 Passenger 2022.03

The wonderful weather in the Netherlands also brought with it some wonderful changes to S3 Passenger. These includes new changes in the bucket process, Service Property Rules and S3 Data tree
  • A different way to present alternative travel options to the user in S3 Ticket;
  • More changes to Navigator 2.0 by re-adding the “route” entity in Navigator 2.0 as an optional functionality;
  • New validation structure for after sales;
  • When add-on products for seat selection are available, notify the user with a message that picking seats manually is possible;
  • New validation structure for create (provisional) booking

S3 Passenger 2022.02

February was a busy month at Sqills, with many different features added in the shortest month of the year.
  • With a dedicated function, allow to select the maximum of an unlimited set of arguments skipping empty outcomes;
  • Separating S3 Payment from S3 Core to improve PCI security;
  • Optimise inventory bucket update for very large inventory collections;
  • Budget based invoice payment method in S3 Payment;
  • Further switches to get ready for Nav 2.0.

S3 Passenger 2022.01

This feature re-introduces the "route" entity in Navigator 2.0 as an optional functionality. It is there to support users in creating new services or updating existing ones.
  • Operators can create any service with maximum flexibility, which is powerful in case of disruptions that involve redirection / detours of services to reach their destination
  • This feature re-introduces the Route entity in Navigator 2.0, but without any functionally required dependency.
  • Services can be optionally associated to a Route, with no other intention than to inform the system which sequence of stops are relevant candidates to be included in this service.

S3 Passenger 2021.11

Gearing up towards Fare 2.0 at the end of the year, this release saw a number of different options focused on that. These are just a handful of options that would be possible.
  • First part of the future generation of the fare module with a strict focus on price calculations
  • Operators can configure their tariffs in S3 Fare  to be priced according to the rules of the pricing engine
  • Enable the inclusion of rounding rules and discount calculations