Sunstar Hotels

Property Management System

Property Management System across the group

SIHOT is a German, owner-managed hospitality software vendor (legal entity GUBSE AG) that has built modular hotel-management software since 1986, deployable cloud, SaaS or on-premise. Its suite spans four core products — SIHOT.PMS (property management), SIHOT.WEB (direct booking engine), SIHOT.POS (point of sale) and SIHOT.C&B (conference & banqueting) — extended by ~22 add-on modules. Those modules include SIHOT.LOYALTY (loyalty cards, revenue-to-bonus-points conversion with expiry periods, rate-type entitlements), SIHOT.CRM (guest segmentation and campaigns) and SIHOT.VOUCHER (voucher sale, redemption, tax handling and outstanding-liability tracking). SIHOT@360° is its API-first integration layer, fronting a partner marketplace of 200+ certified apps across categories including CRM and Marketing, Payment Providers and Guest Experience.

Payments & Payment Orchestration likely

Payment service provider inside the OnePageBooking checkout

Adyen is a Dutch financial technology platform that provides end-to-end payment acceptance for large enterprises on a single stack — online, in-app and in-person — combining gateway, risk management, acquiring and settlement, which it can do directly because it holds its own banking licence. Beyond acceptance it sells Adyen Issuing (virtual and physical card issuance), Adyen for Platforms (embedded payments for marketplaces), payouts and business accounts, and a Stored Value API for issuing, activating, loading, balance-checking and merging gift cards. In hospitality it markets a "unified commerce" proposition covering the whole guest journey — booking, check-in, F&B, spa, checkout — with card tokenization for cross-property guest recognition, pre-authorizations with automatic top-ups for incidentals, post-checkout collection of no-shows and late charges, and dynamic currency conversion. It integrates with the major hotel systems (Oracle Hospitality/OPERA, Shiji, Infor HMS, Agilysys, Sabre, Protel, Apaleo, Clock PMS, StayNTouch, TravelClick) and pioneered "proxy tokenization," intercepting the CRS-to-PMS booking message so raw card data never touches the property server.

Booking Engine

Booking engine (IBE) — OnePageBooking v6, deployed as 7 separate single-property instances

Berlin-based developer and host of OnePageBooking, a long-established direct-booking engine for independent hotels and groups, focused on single-page flows, transparent pricing and cancellation reduction. Also distributed as an app in the Apaleo Store.

Hotel CRM & Guest Management

Newsletter subscription and guest communication — deployed as 4 separate tenants, not in multi-property mode

Re:Guest is a South Tyrolean hotel CRM and guest-communication platform founded in 2014 in Merano by Michael Mitterhofer, Denis Pellegrini and Stefan Plattner, who had run a tourism marketing agency together since 1999. The product started as an "emotional", web-based alternative to static PDF offers and grew into a full sales-and-marketing suite: guest profiling and segmentation, an omnichannel inbox spanning email, WhatsApp, Instagram/Facebook and a website widget, automated offers and upsell campaigns, newsletter marketing, an AI agent layer branded CR:IS, a BI module, and a web-based guest app covering digital guest directory, F&B/spa/activity ordering and self-checkout. The operating entity ReGuest S.p.A. has been listed on the Vienna Stock Exchange's direct market plus since December 2024 and reported preliminary FY2025 revenue of EUR 6.66m. It is consolidating adjacent hospitality-tech vendors through majority and minority stakes (Zeppelin Hotel Tech, UP Hotel Agency, orderando, Indicate).

Hotel Website & CMS

Website CMS for the group site, all 7 property subdomains and the careers site

Silverstripe is an open-source, PHP-based content management system and web framework (BSD-licensed, distributed via silverstripe.org) built and maintained by Silverstripe Ltd, a Wellington, New Zealand company founded in 2000 as Totally Digital by Sam Minnée, Tim Copeland and Sigurd Magnusson. The commercial arm (silverstripe.com) monetises through digital agency work — design, build and support — plus Silverstripe Cloud managed hosting and Silverstripe Search, with an ecosystem of several hundred freelance and agency implementation partners worldwide. It is strongest in NZ public sector and enterprise web, and is not a hospitality-specific vendor: it sells no loyalty, guest CRM, stored-value or booking product.

Reputation Management

German-market review badge on selected property sites

HolidayCheck is the largest hotel-review and package-travel booking portal in German-speaking Europe, founded in 1999 by students in Konstanz and now operated by HolidayCheck AG in Bottighofen, Switzerland under HolidayCheck Group AG in Munich. It combines a verified-review database with transactional booking, and through HC Touristik ("HolidayCheck Reisen") it also acts as a licensed tour operator selling package holidays as principal; sister brand MietwagenCheck/Driveboo covers rental cars. Hotels interact with it through the free HolidayCheck Business Center (review responses, profile and photo management, benchmarking) plus paid visibility, review widgets and the annual HolidayCheck Award badges. It is majority-owned by Hubert Burda Media, was delisted in 2021, and in July 2026 Burda engaged Raymond James to explore a sale.

Reputation Management

Review widget embedded on selected property sites

Tripadvisor is the world's largest travel guidance platform, built on user-generated reviews (~1 billion reviews across ~8 million hotels, restaurants and attractions) and monetised through hotel metasearch, CPC advertising and two owned marketplaces: Viator for tours and experiences and TheFork for restaurant reservations. Its hotel-facing B2B products — Business Advantage, Sponsored Placements, TripConnect and the Review Express API — sell visibility and review volume back to the properties whose guests generate the content. Since 2011 it has traded on Nasdaq as TRIP; in April 2025 it absorbed its own parent, Liberty TripAdvisor, removing its controlling stockholder. After killing the paid Tripadvisor Plus subscription in 2024, the company relaunched consumer loyalty in August 2025 as Tripadvisor Rewards, a free app-only programme paying 5% back in "Trip Cash".

Gift Cards, Vouchers & Stored Value

Group-wide gift-voucher (value voucher) shop — single central instance, not per property

SIHOT is a German, owner-managed hospitality software vendor (legal entity GUBSE AG) that has built modular hotel-management software since 1986, deployable cloud, SaaS or on-premise. Its suite spans four core products — SIHOT.PMS (property management), SIHOT.WEB (direct booking engine), SIHOT.POS (point of sale) and SIHOT.C&B (conference & banqueting) — extended by ~22 add-on modules. Those modules include SIHOT.LOYALTY (loyalty cards, revenue-to-bonus-points conversion with expiry periods, rate-type entitlements), SIHOT.CRM (guest segmentation and campaigns) and SIHOT.VOUCHER (voucher sale, redemption, tax handling and outstanding-liability tracking). SIHOT@360° is its API-first integration layer, fronting a partner marketplace of 200+ certified apps across categories including CRM and Marketing, Payment Providers and Guest Experience.

Mobile Key & Access Control

Electronic hotel locking system

SALTO Systems is a Spanish manufacturer of electronic locking and smart access-control hardware and software, founded in 2001 in Oiartzun (Basque Country) by Javier Roquero and Marc Handels. Its hospitality line pairs XS4 electronic locks with two management platforms — Salto Space (on-premise, data-on-card SVN, with a hotel add-on for check-in/out, group check-in and stay extension) and cloud-based Salto KS — plus JustIN Mobile Key for phone-based room entry, and it ships connectors to 23+ PMS platforms including Oracle OPERA, Mews, Cloudbeds, StayNTouch and protel. The business has been rebranded as the SALTO WECOSYSTEM, an umbrella over three brands: Salto (access and identity), Gantner (RFID identification, lockers and closed-loop cashless payment for leisure and wellness venues) and Vintia (ticketing and booking for attractions). Reported 2024 sales were around EUR 430m with 1,850+ employees across 40+ countries.

Accessibility Technology

Accessibility guide profile linked from every property site

Ginto is a Swiss accessibility-information platform operated by Verein Sitios, a non-profit association founded in Zurich in 2022 by Pro Infirmis, the Förderverein Barrierefreie Schweiz and the AccessibilityGuide association. It collects structured, measured accessibility data on hotels, restaurants, museums, transport and leisure venues (door widths, lifts, thresholds, bed and table heights, routes, plus photos) and serves it through a consumer app and web guide where each user matches venues against a personal needs profile. Hotels get their data captured either by self-declaration via the app under the OK:GO initiative or by paid on-site surveys, then publish it as a per-venue web link, an embeddable web component on their own site, or via free open-data APIs into partner booking and destination platforms. Sunstar Hotels (Fred Tschanz Group) is a published reference case;

HRIS & Payroll

Time management and hospitality back-office software

Mirus Software AG is a Swiss hospitality back-office specialist founded in 1993 in Davos, selling HR, payroll, time-tracking, staff scheduling and financial accounting software to hotels, restaurants and tourism/leisure operators. Its flagship Mirus BUSINESS suite bundles Swissdec-certified payroll (Mirus Lohn), time capture (Mirus Time), the Mirus NEO employee app, Mirus Finance, and the AI forecasting/auto-scheduling module Prognolite acquired in 2024. Everything it sells is staff-facing: there is no guest CRM, no loyalty, no gift-card or stored-value product anywhere in the portfolio. Owned by Austrian investor Alpha VCX since October 2023 (previously P&I Personal & Informatik from 2012), it is now rolling up DACH hospitality HR, having bought German payroll provider lohn-ag.de in September 2025 and rebranded it Mirus Deutschland.

Privacy & Consent Management likely

Cookie consent / CMP, loaded via GTM rather than directly

Cookiebot is a consent management platform (CMP) that puts a cookie/tracking consent banner on a website, automatically scans the domain each month to discover and classify every cookie and third-party script, blocks non-essential trackers until the visitor consents, and stores an auditable consent log. It was launched in Denmark in 2012 by Cybot A/S and merged into Munich-based Usercentrics in September 2021; it is now sold as "Cookiebot by Usercentrics" as the self-service / SMB tier alongside the enterprise Usercentrics CMP. It is a Google-certified CMP with native Google Consent Mode v2 support for GTM, GA4 and Google Ads. The company states it runs on 2.4M+ websites and apps for 600,000+ customers and processes around 8.8B consents per month.

Web & Marketing Analytics

Tag management container on group, property and careers sites

Google's web analytics (GA4) and tag management (GTM) stack — the near-universal default for hotel websites, usually deployed as a single GTM container that loads GA4, ad pixels and consent tooling.

Online Travel Agency

Primary OTA channel; listing names diverge from the group brand

The dominant online travel agency for European accommodation, taking commission (typically ~15–20%) on bookings it originates.