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
Aug 2021
S3 Passenger 2021.08
Jul 2021
S3 Passenger 2021.07
Jun 2021
S3 Passenger 2021.06
May 2021
S3 Passenger 2021.05
Apr 2021
S3 Passenger 2021.04

Our customers

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


S3 Passenger 2021.08

After the summer vacation period the development of S3 Passenger continues rolling on. This includes support for OpenID Connect Authentication and Identity Providers, additions to the Freemarker model and more.
  • The ability to manage separate e-mail templates to go to Customers vs Passengers as part of a fulfilment flow
  • Inclusion of CMS Block contents in Freemarker templates for central management of common content sections that are (conditionally) re-used across many emails
  • Support for OpenID Connect Authentication and Identity Providers

S3 Passenger 2021.07

As we are heading towards the summer break we welcome the seventh round of updates for S3 Passenger for the year. It includes updates for Navigator, S3 Inventory, and revision logic amongst others.
  • A dedicated screen in S3 Portal for Navigator that graphically depicts a multi-month calendar for a given Service Name
  • An advanced inventory feature that allows for “leg constraints” that independently manage the maximum quantity of allowed passengers for any given leg within a larger OD, to become independent of the inventory class used.
  • A feature that complements the booking number revision logic by capturing for operations in which ticket items are replaced by newer ticket items, the replacement sequence (which ticket items replaces which others) and what caused it
  • The ability to derive prices from tariffs that (themselves) derive prices from other tariffs

S3 Passenger 2021.06

As we head into the summer months we have the sixth instalment of S3 Passenger. This includes a number of fixes and new features.
  • Extend Discount insight in Journey Search, to provide insight in which discounts apply to each individual item in the bundle
  • Ability to assign Back-office roles to Agents in S3 Auth, removing the Agent vs Back-office user distinction

S3 Passenger 2021.05

The fifth group of updates for S3 Passenger in 2021, this includes support for external references, changes in provisional items, enhanced voucher security.
  • Make message sending capabilities in bulk in S3 Ticket able to choose messages per product and send it independently of fulfilment
  • Allow items changes on provisional items in a confirmed booking without checking aftersales rules
  • Features to enhance voucher security by making “code” a private (masked) attribute and relying more on “alias”.
  • Support for External References in Offer Explorer API and S3 Portal screen

S3 Passenger 2021.04

The fourth group of updates for S3 Passenger in 2021 was no April's fools and brought a number of improvements in terms of booking creation, updates and cancellation and a new version of the Schedule change detection process.
  • New version of the Schedule change detection process;
  • New type of booking conflict in case the shift in departure and/or arrival times are significant;
  • Possible to see in the booking history that the schedule of services was updated after the booking was originally confirmed;
  • New push notification, that deals with the announcement of the creation, update or cancellation / expiry of provisional bookings or provisional items on already confirmed bookings.