Technology history for vitalsource.com
Stack size over time
From 5 detected technologies in Apr 2018 to 98 in Jun 2026.
Currently detected
- React since Apr 2018
- Ruby on Rails since Apr 2018
- Google Font API since Apr 2018
- Cloudflare since Jun 2018
- jQuery since Jun 2018
- Underscore.js since Jun 2018
- Ruby since Jun 2018
- New Relic since Jun 2018
- Lodash since Jun 2018
- Bootstrap since Jun 2018
- Google Analytics since Jun 2018
- Hotjar since Jun 2018
- Google Cloud since Jul 2018
- HubSpot since Aug 2018
- Adobe Analytics since Aug 2018
- GSAP since Aug 2018
- Modernizr since Aug 2018
- Moment.js since Aug 2018
- Matomo since Aug 2018
- Font Awesome since Aug 2018
- FancyBox since Aug 2018
- Crazy Egg since Aug 2018
- Amazon CloudFront since Aug 2018
- styled-components since Aug 2018
- jQuery UI since Aug 2018
- Google Tag Manager since Aug 2018
- Amazon S3 since Aug 2018
- Slick since Aug 2018
- Typekit since Aug 2018
- Facebook since Sep 2018
- Dynatrace RUM since Sep 2018
- Optimizely since Oct 2018
- reCAPTCHA since Jan 2019
- Webpack since Jan 2019
- Amazon Web Services since Jan 2019
- Zendesk since Mar 2020
- Babel since Mar 2020
- Marketo since May 2020
- Linkedin since May 2020
- Twitter since May 2020
- VideoJS since May 2020
- jsDelivr since Jul 2020
- Cart Functionality since Aug 2020
- Matomo Analytics since Aug 2020
- Sentry since Jan 2021
- Java since Jan 2021
- Okta since Feb 2021
- Sift since Feb 2021
- Animate.css since Feb 2021
- Linkedin Insight Tag since Feb 2021
- HubSpot Analytics since Feb 2021
- Microsoft Advertising since Feb 2021
- HubSpot CMS Hub since Jun 2021
- Dynatrace since Jul 2021
- HubSpot Cookie Policy Banner since Aug 2021
- DataTables since Aug 2021
- Google Ads Conversion Tracking since Aug 2021
- core-js since Aug 2021
- Wheelio since Sep 2021
- Highlight.js since Nov 2021
- Klaviyo since Nov 2021
- Cloudflare Bot Management since Nov 2021
- Envoy since Nov 2021
- Microsoft Clarity since Jan 2022
- LazySizes since Feb 2022
- PayPal since Feb 2022
- Cloudflare Network Error Logging since Feb 2022
- Google Cloud CDN since Apr 2022
- PWA since Aug 2022
- MailChimp since Aug 2022
- Sendgrid since Aug 2022
- Microsoft 365 since Aug 2022
- Cloudflare Browser Insights since Aug 2022
- DocuSign since Aug 2022
- Salesforce since Aug 2022
- cdnjs since Aug 2022
- HSTS since Sep 2022
- Open Graph since Sep 2022
- HTTP/3 since Sep 2022
- Cloudflare Rocket Loader since Oct 2022
- OneTrust since Oct 2022
- Salesforce Interaction Studio since Oct 2022
- RSS since Dec 2022
- Salesforce Marketing Cloud Account Engagement since Dec 2022
- Google Code Prettify since Dec 2022
- Twitter Ads since Dec 2022
- Atlassian Statuspage since Dec 2022
- Twitter typeahead.js since Dec 2022
- Polyfill since Dec 2022
- Apple iCloud Mail since Jan 2023
- Azure since Mar 2023
- Knockout.js since Mar 2023
- Google Optimize since May 2023
- Priority Hints since Aug 2023
- Turbolinks since Jun 2024
- Wistia since Feb 2025
- Turbo since Oct 2025
- LogRocket since Jun 2026
Previously used
- Preact Mar 2025 to Jul 2025 · 4 mo
- Signifyd Feb 2025 to Apr 2025 · 2 mo
- PayPal Marketing Solutions Sep 2024 to Jan 2025 · 4 mo
- Amazon ALB Sep 2021 to Oct 2024 · 3 yrs
- VWO Aug 2023 to Mar 2024 · 7 mo
- Hammer.js Aug 2018 to Feb 2024 · 5 yrs
- Backbone.js May 2020 to Jun 2023 · 3 yrs
- Fastly Dec 2022 to Apr 2023 · 4 mo
- Flickity Jan 2019 to Dec 2022 · 3 yrs
- Unpkg Jul 2021 to Dec 2022 · 1 yr
- Pardot Aug 2022 to Nov 2022 · 3 mo
- Snap.svg Jul 2021 to Nov 2022 · 1 yr
- parcel Apr 2019 to Sep 2022 · 3 yrs
- Pinterest Conversion Tag Jul 2021 to Aug 2022 · 1 yr
- Facebook Pixel Jul 2021 to Jul 2022 · 1 yr
- Bronto Feb 2021 to May 2022 · 1 yr
- Google Remarketing Tag Jul 2021 to May 2022 · 10 mo
- HubSpot Chat Jun 2021 to Apr 2022 · 10 mo
- Snap Pixel Jul 2021 to Feb 2022 · 7 mo
- HubSpot Cookie Jul 2021 to Jul 2021 · 1 mo
- Zendesk Chat Jan 2019 to Mar 2021 · 2 yrs
- Spring Jan 2021 to Feb 2021 · 1 mo
- TinyMCE Oct 2020 to Jan 2021 · 3 mo
- AngularJS Jan 2019 to Apr 2020 · 1 yr
- FingerprintJS Aug 2019 to Apr 2020 · 8 mo
- Heap Mar 2020 to Apr 2020 · 1 mo
- Select2 Jun 2018 to Apr 2020 · 1 yr
- Signal Jan 2019 to Jan 2020 · 1 yr
- Phusion Passenger Jun 2018 to Dec 2018 · 6 mo
- Nginx Apr 2018 to Nov 2018 · 7 mo
- Ubuntu Apr 2018 to Nov 2018 · 7 mo
Timeline
2026 2 added · 1 dropped
- added LogRocket Jun 2026 · Analytics
- added Microsoft Clarity Apr 2026 · Analytics
- dropped Fastly Feb 2026 · CDN
2025 4 added · 2 dropped · 1 switched
- added Turbo Oct 2025 · Performance
- dropped Preact Sep 2025 · JavaScript libraries
- dropped Signifyd Aug 2025 · Analytics
- added Sentry Apr 2025 · Issue trackers
- added Preact Mar 2025 · JavaScript libraries
- switched PayPal Marketing Solutions Signifyd Feb 2025 · Analytics
- added Wistia Feb 2025 · Video players
2024 2 added · 4 dropped
- dropped Amazon ALB Dec 2024 · Load balancers
- added Envoy Nov 2024 · Reverse proxies
- added PayPal Marketing Solutions Sep 2024 · Analytics
- dropped Envoy Aug 2024 · Reverse proxies
- dropped VWO May 2024 · Analytics
- dropped Hammer.js Apr 2024 · JavaScript libraries
2023 6 added · 6 dropped
- added Linkedin Insight Tag Dec 2023 · Analytics
- dropped Backbone.js Oct 2023 · JavaScript frameworks
- dropped Envoy Aug 2023 · Reverse proxies
- added Priority Hints Aug 2023 · Performance
- added VWO Aug 2023 · Analytics
- added Envoy Jun 2023 · Reverse proxies
- dropped Envoy May 2023 · Reverse proxies
- added Google Optimize May 2023 · A/B Testing
- dropped Flickity Feb 2023 · JavaScript libraries
- dropped Unpkg Feb 2023 · CDN
- added Apple iCloud Mail Jan 2023 · Webmail
- dropped Snap.svg Jan 2023 · JavaScript libraries
2022 15 added · 10 dropped · 2 switched
- dropped Facebook Pixel Dec 2022 · Analytics
- dropped Microsoft Clarity Dec 2022 · Analytics
- dropped parcel Dec 2022 · Miscellaneous
- switched Pardot Salesforce Marketing Cloud Account Engagement Dec 2022 · Marketing automation
- dropped Linkedin Insight Tag Nov 2022 · Analytics
- dropped Pinterest Conversion Tag Nov 2022 · Analytics
- dropped Spring Nov 2022 · Web frameworks
- added HSTS Sep 2022 · Security
- added HTTP/3 Sep 2022 · Miscellaneous
- added Open Graph Sep 2022 · Miscellaneous
- dropped Phusion Passenger Sep 2022 · Web Servers
- added Cloudflare Browser Insights Aug 2022 · RUM
- added DocuSign Aug 2022 · Miscellaneous
- added MailChimp Aug 2022 · Email
- added Microsoft 365 Aug 2022 · Email
- switched Bronto Pardot Aug 2022 · Marketing automation
- added PWA Aug 2022 · Miscellaneous
- added Salesforce Aug 2022 · CRM
- added Sendgrid Aug 2022 · Email
- dropped Google Remarketing Tag Jul 2022 · Retargeting
- dropped HubSpot Chat Jun 2022 · Live chat
- added Google Cloud CDN Apr 2022 · CDN
- dropped Snap Pixel Apr 2022 · Advertising
- added Cloudflare Network Error Logging Feb 2022 · Issue trackers
- added LazySizes Feb 2022 · JavaScript libraries
- added PayPal Feb 2022 · Payment processors
- added Microsoft Clarity Jan 2022 · Analytics
2021 33 added · 11 dropped · 1 switched
- added Cloudflare Bot Management Nov 2021 · Security
- added Envoy Nov 2021 · Reverse proxies
- added Klaviyo Nov 2021 · Marketing automation
- added Amazon ALB Sep 2021 · Load balancers
- added Wheelio Sep 2021 · Widgets
- added core-js Aug 2021 · JavaScript libraries
- added DataTables Aug 2021 · JavaScript libraries
- added Google Ads Conversion Tracking Aug 2021 · Analytics
- switched HubSpot Cookie HubSpot Cookie Policy Banner Aug 2021 · Cookie compliance
- added Babel Jul 2021 · Miscellaneous
- added Backbone.js Jul 2021 · JavaScript frameworks
- added Dynatrace Jul 2021 · Analytics
- added Facebook Pixel Jul 2021 · Analytics
- added Flickity Jul 2021 · JavaScript libraries
- added Google Remarketing Tag Jul 2021 · Retargeting
- added HubSpot Cookie Jul 2021 · Cookie compliance
- added Moment.js Jul 2021 · JavaScript libraries
- added parcel Jul 2021 · Miscellaneous
- added Pinterest Conversion Tag Jul 2021 · Analytics
- added Snap Pixel Jul 2021 · Advertising
- added Snap.svg Jul 2021 · JavaScript libraries
- added Unpkg Jul 2021 · CDN
- added VideoJS Jul 2021 · Video players
- added Webpack Jul 2021 · Miscellaneous
- added HubSpot Chat Jun 2021 · Live chat
- added HubSpot CMS Hub Jun 2021 · CMS
- dropped Sentry May 2021 · Issue trackers
- added Zendesk May 2021 · Live chat
- dropped Zendesk Chat May 2021 · Live chat
- dropped Babel Mar 2021 · Miscellaneous
- dropped Backbone.js Mar 2021 · JavaScript frameworks
- dropped Flickity Mar 2021 · JavaScript libraries
- dropped Moment.js Mar 2021 · JavaScript libraries
- dropped parcel Mar 2021 · Miscellaneous
- dropped TinyMCE Mar 2021 · Rich text editors
- dropped VideoJS Mar 2021 · Video players
- dropped Webpack Mar 2021 · Miscellaneous
- added Animate.css Feb 2021 · UI frameworks
- added Bronto Feb 2021 · Marketing automation
- added HubSpot Analytics Feb 2021 · Analytics
- added Linkedin Insight Tag Feb 2021 · Analytics
- added Microsoft Advertising Feb 2021 · Analytics
- added Okta Feb 2021 · Miscellaneous
- added Sift Feb 2021 · Analytics
- dropped Cart Functionality Jan 2021 · Ecommerce
2020 9 added · 6 dropped · 1 switched
- added TinyMCE Oct 2020 · Rich text editors
- added Cart Functionality Aug 2020 · Ecommerce
- switched Heap Matomo Analytics Aug 2020 · Analytics
- dropped Zendesk Aug 2020 · CMS
- added jsDelivr Jul 2020 · CDN
- dropped AngularJS Jun 2020 · JavaScript Frameworks
- dropped FingerprintJS Jun 2020 · JavaScript Libraries
- dropped reCAPTCHA Jun 2020 · Captchas
- dropped Select2 Jun 2020 · JavaScript Libraries
- added Backbone.js May 2020 · JavaScript frameworks
- added Underscore.js May 2020 · JavaScript libraries
- added VideoJS May 2020 · Video players
- added Babel Mar 2020 · Miscellaneous
- added Heap Mar 2020 · Analytics
- dropped Signal Mar 2020 · Marketing Automation
- added Zendesk Mar 2020 · Live Chat
2019 7 added · 5 dropped
- added reCAPTCHA Nov 2019 · Captchas
- added Signal Nov 2019 · Marketing Automation
- dropped reCAPTCHA Oct 2019 · Captchas
- dropped Signal Sep 2019 · Marketing Automation
- dropped Underscore.js Sep 2019 · JavaScript Libraries
- added FingerprintJS Aug 2019 · JavaScript Libraries
- added Amazon Web Services Jan 2019 · PaaS
- added Flickity Jan 2019 · JavaScript Libraries
- dropped Nginx Jan 2019 · Web Servers
- dropped Ubuntu Jan 2019 · Operating Systems
- added Webpack Jan 2019 · Miscellaneous
- added Zendesk Chat Jan 2019 · Live Chat
2018 5 added · 4 dropped
- added Lodash Dec 2018 · JavaScript Libraries
- added Optimizely Oct 2018 · Analytics
- dropped Underscore.js Oct 2018 · JavaScript Libraries
- added Dynatrace RUM Sep 2018 · Analytics
- added Facebook Sep 2018 · Widgets
- dropped Lodash Aug 2018 · JavaScript Frameworks
- added Google Cloud Jul 2018 · CDN
- dropped Nginx Jul 2018 · Web Servers
- dropped Ubuntu Jul 2018 · Operating Systems