Technology history for citypass.com

2026 1 added · 2 dropped

• dropped Ruby Apr 2026 · Programming languages
• dropped Ruby on Rails Apr 2026 · Web frameworks
• added styled-components Mar 2026 · JavaScript frameworks

2025 5 added · 2 dropped

• added Google Publisher Tag Jul 2025 · Advertising
• added Envoy May 2025 · Reverse proxies
• added Contentsquare Apr 2025 · Analytics
• dropped Contentsquare Mar 2025 · Analytics
• added Twitter Mar 2025 · Widgets
• added Contentsquare Jan 2025 · Analytics
• dropped Twitter Jan 2025 · Widgets

2024 11 added · 6 dropped

• dropped AddThis Oct 2024 · Widgets
• added Twitter Oct 2024 · Widgets
• added Matomo Analytics Aug 2024 · Analytics
• added Matomo Tag Manager Aug 2024 · Tag managers
• added Booking.com Jul 2024 · Affiliate programs
• added Booking.com widget Jul 2024 · Widgets
• added Bootstrap Jun 2024 · UI frameworks
• added Google Sign-in Jun 2024 · Authentication
• added lit-element Jun 2024 · JavaScript libraries
• added lit-html Jun 2024 · JavaScript libraries
• added PubSubJS Jun 2024 · JavaScript libraries
• added Twitter Ads Jun 2024 · Advertising
• dropped Amazon ALB Mar 2024 · Load balancers
• dropped Amazon Web Services Mar 2024 · PaaS
• dropped Bootstrap Mar 2024 · UI frameworks
• dropped Twitter Ads Mar 2024 · Advertising
• dropped PerimeterX Feb 2024 · Security

2023 36 added · 8 dropped · 1 switched

• dropped Twitter Dec 2023 · Widgets
• added cdnjs Nov 2023 · CDN
• dropped reCAPTCHA Nov 2023 · Security
• added Priority Hints Sep 2023 · Performance
• added VWO Sep 2023 · Analytics
• added Firebase Jul 2023 · Databases
• dropped Moat Jul 2023 · Analytics
• added Insider Jun 2023 · Customer data platform
• added AddThis May 2023 · Widgets
• added Amazon ALB May 2023 · Load balancers
• added Amazon Web Services May 2023 · PaaS
• added Auryc May 2023 · Analytics
• added Babel May 2023 · Miscellaneous
• added Bootstrap May 2023 · UI frameworks
• added Cart Functionality May 2023 · Ecommerce
• added Cloudflare Bot Management May 2023 · Security
• added Facebook Login May 2023 · Authentication
• added Google Analytics Enhanced eCommerce May 2023 · Analytics
• added Google Maps May 2023 · Maps
• added jQuery May 2023 · JavaScript libraries
• added Moat May 2023 · Analytics
• added Moment.js May 2023 · JavaScript libraries
• added Naver Analytics May 2023 · Analytics
• added Nginx May 2023 · Web servers
• added Open Graph May 2023 · Miscellaneous
• added PerimeterX May 2023 · Security
• added RequireJS May 2023 · JavaScript frameworks
• switched C → Ruby May 2023 · Programming languages
• added Ruby on Rails May 2023 · Web frameworks
• added Stripe May 2023 · Payment processors
• added Twitter Ads May 2023 · Advertising
• added Ubuntu May 2023 · Operating systems
• added Varnish May 2023 · Caching
• added Zendesk May 2023 · Documentation
• dropped Cookiebot Apr 2023 · Cookie compliance
• added Twitter Apr 2023 · Widgets
• dropped Auryc Mar 2023 · Analytics
• dropped Preact Mar 2023 · JavaScript libraries
• added Bootstrap Feb 2023 · UI frameworks
• added C Feb 2023 · Programming languages
• added Twitter Ads Feb 2023 · Advertising
• added Auryc Jan 2023 · Analytics
• dropped Bootstrap Jan 2023 · UI frameworks
• added Preact Jan 2023 · JavaScript libraries
• dropped Twitter Ads Jan 2023 · Advertising

2022 57 added · 14 dropped · 2 switched

• dropped Cloudflare Network Error Logging Dec 2022 · Issue trackers
• dropped Google Ads Conversion Tracking Dec 2022 · Analytics
• dropped Microsoft Clarity Dec 2022 · Analytics
• dropped Envoy Oct 2022 · Reverse proxies
• added HSTS Sep 2022 · Security
• added HTTP/3 Sep 2022 · Miscellaneous
• added Open Graph Sep 2022 · Miscellaneous
• dropped Twitter Sep 2022 · Widgets
• added AddThis Aug 2022 · Widgets
• added Amazon ALB Aug 2022 · Load balancers
• added Amazon Web Services Aug 2022 · PaaS
• added Bootstrap Aug 2022 · UI frameworks
• added BugSnag Aug 2022 · Analytics
• added Cart Functionality Aug 2022 · Ecommerce
• added Cloudflare Aug 2022 · CDN
• added Cloudflare Bot Management Aug 2022 · Security
• added Cloudflare Network Error Logging Aug 2022 · Issue trackers
• added core-js Aug 2022 · JavaScript libraries
• added Facebook Login Aug 2022 · Authentication
• added Facebook Pixel Aug 2022 · Analytics
• added Google Ads Conversion Tracking Aug 2022 · Analytics
• added Google AdSense Aug 2022 · Advertising
• added Google Analytics Aug 2022 · Analytics
• added Google Analytics Enhanced eCommerce Aug 2022 · Analytics
• added Google Optimize Aug 2022 · A/B Testing
• added Google Tag Manager Aug 2022 · Tag managers
• added Heap Aug 2022 · Analytics
• added jQuery Aug 2022 · JavaScript libraries
• added Lodash Aug 2022 · JavaScript libraries
• added Microsoft Advertising Aug 2022 · Advertising
• added Microsoft Clarity Aug 2022 · Analytics
• added Moat Aug 2022 · Analytics
• added Moment.js Aug 2022 · JavaScript libraries
• added Naver Analytics Aug 2022 · Analytics
• added Next.js Aug 2022 · Web frameworks
• added Nginx Aug 2022 · Web servers
• added Node.js Aug 2022 · Programming languages
• added OneTrust Aug 2022 · Cookie compliance
• added PerimeterX Aug 2022 · Security
• added React Aug 2022 · JavaScript frameworks
• added reCAPTCHA Aug 2022 · Security
• added RequireJS Aug 2022 · JavaScript frameworks
• added Ruby Aug 2022 · Programming languages
• added Ruby on Rails Aug 2022 · Web frameworks
• added Twitter Ads Aug 2022 · Advertising
• switched Google Font API → Typekit Aug 2022 · Font scripts
• added UpSellit Aug 2022 · Cart abandonment
• added Varnish Aug 2022 · Caching
• added Webpack Aug 2022 · Miscellaneous
• added YouTube Aug 2022 · Video players
• added Zendesk Aug 2022 · Issue trackers
• dropped Facebook Jul 2022 · Widgets
• dropped Google Remarketing Tag Jul 2022 · Retargeting
• added Twitter Jul 2022 · Widgets
• added YouTube Jul 2022 · Video players
• added Bootstrap Jun 2022 · UI frameworks
• dropped Tailwind CSS Jun 2022 · UI frameworks
• dropped Wisepops Jun 2022 · Widgets
• dropped Preact May 2022 · JavaScript libraries
• dropped styled-components May 2022 · JavaScript frameworks
• added Twitter Ads May 2022 · Advertising
• added Naver Analytics Apr 2022 · Analytics
• added Tailwind CSS Apr 2022 · UI frameworks
• added Google Font API Mar 2022 · Font scripts
• added Preact Mar 2022 · JavaScript libraries
• added styled-components Mar 2022 · JavaScript frameworks
• switched Wheelio → Wisepops Mar 2022 · Widgets
• added BugSnag Feb 2022 · Analytics
• added Cloudflare Network Error Logging Feb 2022 · Issue trackers
• added Heap Feb 2022 · Analytics
• dropped Boomerang Jan 2022 · JavaScript libraries
• dropped BugSnag Jan 2022 · Analytics
• dropped Polyfill Jan 2022 · JavaScript libraries

2021 29 added · 8 dropped

• added Cloudflare Bot Management Dec 2021 · Security
• added Microsoft Clarity Dec 2021 · Analytics
• added Envoy Nov 2021 · Reverse proxies
• added Lodash Nov 2021 · JavaScript libraries
• dropped Cloudflare Browser Insights Oct 2021 · Analytics
• dropped Tealium Oct 2021 · Tag managers
• added Amazon ALB Sep 2021 · Load balancers
• added Amazon Web Services Sep 2021 · PaaS
• added core-js Sep 2021 · JavaScript libraries
• added OneTrust Sep 2021 · Cookie compliance
• added Wheelio Sep 2021 · Widgets
• added Next.js Aug 2021 · Web frameworks
• added Node.js Aug 2021 · Programming languages
• added Google Ads Conversion Tracking Jul 2021 · Analytics
• added Google Remarketing Tag Jul 2021 · Retargeting
• added Moment.js Jul 2021 · JavaScript libraries
• added PerimeterX Jul 2021 · Security
• added Ruby Jul 2021 · Programming languages
• added Ruby on Rails Jul 2021 · Web frameworks
• added Boomerang Jun 2021 · JavaScript libraries
• added Facebook Pixel Jun 2021 · Analytics
• added Google Analytics Enhanced eCommerce Jun 2021 · Analytics
• added Google Optimize Jun 2021 · A/B Testing
• added Webpack Jun 2021 · Miscellaneous
• dropped Google Analytics Enhanced eCommerce May 2021 · Ecommerce
• added React May 2021 · JavaScript libraries
• dropped Webpack May 2021 · Miscellaneous
• added UpSellit Apr 2021 · Personalisation
• added Zendesk Apr 2021 · Live chat
• added Cloudflare Browser Insights Mar 2021 · Analytics
• dropped Moment.js Mar 2021 · JavaScript libraries
• dropped Ruby Mar 2021 · Programming languages
• dropped Ruby on Rails Mar 2021 · Web frameworks
• dropped TinyMCE Mar 2021 · Rich text editors
• added Microsoft Advertising Feb 2021 · Analytics
• added Typekit Feb 2021 · Font scripts
• added Google AdSense Jan 2021 · Advertising

2020 7 added · 8 dropped · 1 switched

• dropped React Nov 2020 · JavaScript frameworks
• added TinyMCE Oct 2020 · Rich text editors
• added Cart Functionality Aug 2020 · Ecommerce
• added reCAPTCHA Aug 2020 · Security
• dropped Zendesk Aug 2020 · CMS
• dropped LiveChat Jun 2020 · Live Chat
• dropped AppNexus Mar 2020 · Advertising Networks
• added Zendesk Mar 2020 · SaaS
• dropped Apache HTTP Server Feb 2020 · Web Servers
• dropped Crazy Egg Feb 2020 · Analytics
• dropped Optimizely Feb 2020 · Analytics
• dropped Typekit Feb 2020 · Font Scripts
• switched YUI → Moment.js Jan 2020 · JavaScript Libraries
• added React Jan 2020 · JavaScript Frameworks
• added Ruby Jan 2020 · Programming Languages
• added Ruby on Rails Jan 2020 · Web Frameworks

2019 17 added · 2 dropped

• added LiveChat Aug 2019 · Live Chat
• dropped Nginx Apr 2019 · Web Servers
• added Apache HTTP Server Mar 2019 · Web Servers
• added AppNexus Mar 2019 · Advertising Networks
• added BugSnag Mar 2019 · Analytics
• added Cloudflare Mar 2019 · CDN
• added Crazy Egg Mar 2019 · Analytics
• added Facebook Mar 2019 · Widgets
• added Google Analytics Mar 2019 · Analytics
• added Google Analytics Enhanced eCommerce Mar 2019 · Analytics
• added Google Tag Manager Mar 2019 · Tag Managers
• added jQuery Mar 2019 · JavaScript Libraries
• added Optimizely Mar 2019 · Analytics
• added Polyfill Mar 2019 · JavaScript Libraries
• added Typekit Mar 2019 · Font Scripts
• added Webpack Mar 2019 · Miscellaneous
• added YUI Mar 2019 · JavaScript Libraries
• dropped comScore Feb 2019 · Analytics
• added Webpack Jan 2019 · Miscellaneous

2018 7 added

• added AppNexus Jun 2018 · Advertising Networks
• added comScore Jun 2018 · Analytics
• added Crazy Egg Jun 2018 · Analytics
• added Facebook Jun 2018 · Widgets
• added Google Analytics Jun 2018 · Analytics
• added Google Analytics Enhanced eCommerce Jun 2018 · Analytics
• added Typekit Jun 2018 · Font Scripts