Technology history for code.org
Stack size over time
From 4 detected technologies in Apr 2018 to 112 in Jun 2026.
Currently detected
- Google Tag Manager since Apr 2018
- Varnish since Apr 2018
- Bootstrap since Apr 2018
- jQuery since Apr 2018
- Google Analytics since Jun 2018
- Nginx since Jun 2018
- Amazon CloudFront since Jun 2018
- New Relic since Jun 2018
- YouTube since Jun 2018
- Google Font API since Aug 2018
- comScore since Aug 2018
- Google Maps since Aug 2018
- Google PageSpeed since Aug 2018
- Hotjar since Aug 2018
- jQuery Migrate since Aug 2018
- RD Station since Aug 2018
- React since Aug 2018
- Underscore.js since Aug 2018
- Ubuntu since Aug 2018
- Discourse since Aug 2018
- Font Awesome since Aug 2018
- Facebook since Aug 2018
- Ember.js since Aug 2018
- jQuery UI since Aug 2018
- Lodash since Aug 2018
- MySQL since Aug 2018
- AngularJS since Aug 2018
- Apache HTTP Server since Aug 2018
- Amazon S3 since Aug 2018
- Backbone.js since Aug 2018
- Gravity Forms since Aug 2018
- Inspectlet since Aug 2018
- Heap since Aug 2018
- Handlebars since Aug 2018
- GSAP since Aug 2018
- Ruby since Aug 2018
- Moment.js since Aug 2018
- Ruby on Rails since Aug 2018
- Optimizely since Aug 2018
- PHP since Aug 2018
- Segment since Aug 2018
- Twitter since Aug 2018
- Webpack since Aug 2018
- Tumblr since Aug 2018
- Woopra since Aug 2018
- WordPress since Aug 2018
- Cloudflare since Oct 2018
- Amazon Web Services since Jan 2019
- VideoJS since Mar 2020
- Zendesk since Mar 2020
- Cart Functionality since Aug 2020
- Froala Editor since Jun 2021
- Cloudflare Browser Insights since Jun 2021
- core-js since Sep 2021
- Amazon ALB since Sep 2021
- Java since Sep 2021
- Envoy since Nov 2021
- Cloudflare Bot Management since Dec 2021
- LazySizes since Feb 2022
- Google Optimize since Apr 2022
- OneTrust since Apr 2022
- jQuery CDN since Jul 2022
- PayPal since Jul 2022
- BugSnag since Jul 2022
- Babel since Jul 2022
- Classy since Jul 2022
- Unpkg since Jul 2022
- Stripe since Jul 2022
- Twitter Ads since Jul 2022
- Google Workspace since Aug 2022
- PWA since Aug 2022
- Amazon SES since Aug 2022
- Bugcrowd since Aug 2022
- Open Graph since Sep 2022
- HSTS since Sep 2022
- Plaid since Oct 2022
- Cloudflare Rocket Loader since Oct 2022
- RSS since Dec 2022
- Salesforce Marketing Cloud Account Engagement since Dec 2022
- web-vitals since Mar 2023
- Salesforce since May 2023
- Transcend since May 2023
- HubSpot since Apr 2024
- Mailjet since May 2024
- reCAPTCHA since Jun 2024
- jsDelivr since Jun 2024
- lit-element since Jun 2024
- lit-html since Jun 2024
- Popper since Aug 2024
- Emotion since Aug 2024
- Google Hosted Libraries since Apr 2025
- HTTP/3 since Apr 2025
- Microsoft Clarity since Apr 2025
- Webflow since Apr 2025
- Imgix since Jun 2025
- Priority Hints since Jun 2025
- Next.js App Router since Jun 2025
- Next.js since Jun 2025
- Node.js since Jun 2025
- Instatus since Jun 2025
- Marionette.js since Jun 2025
- Microsoft Advertising since Jun 2025
- Tailwind CSS since Jun 2025
- TrackJs since Jun 2025
- Vercel since Jun 2025
- MUI since Aug 2025
- Forethought Solve since Jan 2026
- Swiper since Feb 2026
- Sentry since Apr 2026
- mParticle since May 2026
- Turbopack since May 2026
- Radix UI since Jun 2026
Previously used
- Cloudinary Jun 2025 to Oct 2025 · 4 mo
- PayPal Marketing Solutions Jul 2022 to Jan 2025 · 2 yrs
- OpenResty Aug 2018 to Jun 2024 · 5 yrs
- Raphael Aug 2018 to Dec 2023 · 5 yrs
- C Feb 2023 to Feb 2023 · 1 mo
- Pardot Aug 2022 to Nov 2022 · 3 mo
- Cloudflare Network Error Logging Feb 2022 to Oct 2022 · 8 mo
- Highlight.js Sep 2020 to Dec 2021 · 1 yr
- Wheelio Sep 2021 to Oct 2021 · 1 mo
- Lua Aug 2018 to May 2021 · 2 yrs
- Essential JS 2 Nov 2019 to Jan 2020 · 2 mo
- Modernizr Aug 2018 to Jan 2019 · 5 mo
Timeline
2026 4 added
- added Radix UI Jun 2026 · UI frameworks
- added Sentry Apr 2026 · Issue trackers
- added Swiper Feb 2026 · JavaScript libraries
- added Forethought Solve Jan 2026 · Widgets
2025 2 added · 3 dropped
- dropped Cloudinary Dec 2025 · CDN
- added MUI Aug 2025 · UI frameworks
- dropped OpenResty Jun 2025 · Web servers
- added Envoy Mar 2025 · Reverse proxies
- dropped PayPal Marketing Solutions Mar 2025 · Analytics
2024 6 added · 1 dropped
- added jsDelivr Jun 2024 · CDN
- added lit-element Jun 2024 · JavaScript libraries
- added lit-html Jun 2024 · JavaScript libraries
- added reCAPTCHA Jun 2024 · Security
- added Mailjet May 2024 · Email
- added HubSpot Apr 2024 · Marketing automation
- dropped Raphael Mar 2024 · JavaScript graphics
2023 4 added · 1 dropped
- added Salesforce May 2023 · CRM
- added Transcend May 2023 · Cookie compliance
- dropped C Apr 2023 · Programming languages
- added web-vitals Mar 2023 · JavaScript libraries
- added C Feb 2023 · Programming languages
2022 41 added · 5 dropped · 1 switched
- dropped Cloudflare Network Error Logging Dec 2022 · Issue trackers
- added RSS Dec 2022 · Miscellaneous
- switched Pardot Salesforce Marketing Cloud Account Engagement Dec 2022 · Marketing automation
- dropped Envoy Oct 2022 · Reverse proxies
- added HSTS Sep 2022 · Security
- added Open Graph Sep 2022 · Miscellaneous
- added Amazon SES Aug 2022 · Email
- added AngularJS Aug 2022 · JavaScript frameworks
- added Babel Aug 2022 · Miscellaneous
- added Backbone.js Aug 2022 · JavaScript frameworks
- added Bugcrowd Aug 2022 · Security
- added BugSnag Aug 2022 · Analytics
- added Classy Aug 2022 · Page builders
- added Cloudflare Aug 2022 · CDN
- added Cloudflare Bot Management Aug 2022 · Security
- added Cloudflare Browser Insights Aug 2022 · RUM
- added Cloudflare Network Error Logging Aug 2022 · Issue trackers
- added comScore Aug 2022 · Analytics
- added Discourse Aug 2022 · Message boards
- added Ember.js Aug 2022 · JavaScript frameworks
- added Froala Editor Aug 2022 · Rich text editors
- added Google Optimize Aug 2022 · A/B Testing
- added Google Workspace Aug 2022 · Webmail
- added GSAP Aug 2022 · JavaScript frameworks
- added Heap Aug 2022 · Analytics
- added jQuery CDN Aug 2022 · CDN
- added Moment.js Aug 2022 · JavaScript libraries
- added OneTrust Aug 2022 · Cookie compliance
- added OpenResty Aug 2022 · Web servers
- added Pardot Aug 2022 · Marketing automation
- added PayPal Aug 2022 · Payment processors
- added PayPal Marketing Solutions Aug 2022 · Analytics
- added PWA Aug 2022 · Miscellaneous
- added Stripe Aug 2022 · Payment processors
- added Tumblr Aug 2022 · Blogs
- added Twitter Aug 2022 · Widgets
- added Twitter Ads Aug 2022 · Advertising
- added Underscore.js Aug 2022 · JavaScript libraries
- added Unpkg Aug 2022 · CDN
- added Zendesk Aug 2022 · Documentation
- dropped OneTrust Jun 2022 · Cookie compliance
- added Google Optimize Apr 2022 · A/B Testing
- added OneTrust Apr 2022 · Cookie compliance
- dropped Handlebars Mar 2022 · JavaScript frameworks
- added Cloudflare Network Error Logging Feb 2022 · Issue trackers
- dropped Highlight.js Feb 2022 · Miscellaneous
- added LazySizes Feb 2022 · JavaScript libraries
2021 17 added · 12 dropped
- added Cloudflare Bot Management Dec 2021 · Security
- dropped Wheelio Dec 2021 · Widgets
- added Envoy Nov 2021 · Reverse proxies
- added Amazon ALB Sep 2021 · Load balancers
- added core-js Sep 2021 · JavaScript libraries
- added Java Sep 2021 · Programming languages
- added Wheelio Sep 2021 · Widgets
- added Backbone.js Jul 2021 · JavaScript frameworks
- added Cart Functionality Jul 2021 · Ecommerce
- added comScore Jul 2021 · Analytics
- added Discourse Jul 2021 · Message boards
- added Ember.js Jul 2021 · JavaScript frameworks
- added Handlebars Jul 2021 · JavaScript frameworks
- added Highlight.js Jul 2021 · Miscellaneous
- dropped Lua Jul 2021 · Programming languages
- added Ruby Jul 2021 · Programming languages
- added Ruby on Rails Jul 2021 · Web frameworks
- added Underscore.js Jul 2021 · JavaScript libraries
- dropped Cart Functionality Jun 2021 · Ecommerce
- added Zendesk May 2021 · Live chat
- dropped Backbone.js Mar 2021 · JavaScript frameworks
- dropped comScore Mar 2021 · Analytics
- dropped Discourse Mar 2021 · Message boards
- dropped Ember.js Mar 2021 · JavaScript frameworks
- dropped Handlebars Mar 2021 · JavaScript frameworks
- dropped Highlight.js Mar 2021 · Miscellaneous
- dropped Ruby Mar 2021 · Programming languages
- dropped Ruby on Rails Mar 2021 · Web frameworks
- dropped Underscore.js Mar 2021 · JavaScript libraries
2020 4 added · 2 dropped
- added Highlight.js Sep 2020 · Miscellaneous
- added Cart Functionality Aug 2020 · Ecommerce
- dropped Zendesk Aug 2020 · CMS
- dropped Essential JS 2 May 2020 · JavaScript Libraries
- added VideoJS Mar 2020 · Video Players
- added Zendesk Mar 2020 · Live Chat
2019 19 added · 1 dropped
- added Essential JS 2 Nov 2019 · JavaScript Frameworks
- added Amazon Web Services Mar 2019 · PaaS
- added Backbone.js Mar 2019 · JavaScript Frameworks
- added Cloudflare Mar 2019 · CDN
- added comScore Mar 2019 · Analytics
- added Discourse Mar 2019 · Message Boards
- added Ember.js Mar 2019 · JavaScript Frameworks
- added Handlebars Mar 2019 · JavaScript Frameworks
- added Lodash Mar 2019 · JavaScript Libraries
- added Lua Mar 2019 · Programming Languages
- dropped Modernizr Mar 2019 · JavaScript Libraries
- added OpenResty Mar 2019 · Web Servers
- added Optimizely Mar 2019 · Analytics
- added React Mar 2019 · JavaScript Frameworks
- added Ruby Mar 2019 · Programming Languages
- added Ruby on Rails Mar 2019 · Web Frameworks
- added Tumblr Mar 2019 · Blogs
- added Underscore.js Mar 2019 · JavaScript Libraries
- added Webpack Mar 2019 · Miscellaneous
- added Amazon Web Services Jan 2019 · PaaS
2018 6 added
- added Cloudflare Oct 2018 · CDN
- added Amazon CloudFront Jun 2018 · CDN
- added Google Analytics Jun 2018 · Analytics
- added New Relic Jun 2018 · Analytics
- added Nginx Jun 2018 · Web Servers
- added YouTube Jun 2018 · Video Players