Technology history for calendly.com

2026 2 dropped

• dropped Google Sign-in Feb 2026 · Authentication
• dropped PDF.js Jan 2026 · Miscellaneous

2025 7 added · 1 dropped

• added Turbopack Dec 2025 · Development
• added Google Sign-in Sep 2025 · Authentication
• added HTTP/3 Aug 2025 · Miscellaneous
• added Envoy May 2025 · Reverse proxies
• added Sprig Apr 2025 · Surveys
• added ImageKit Mar 2025 · CDN
• added Ketch Jan 2025 · Cookie compliance
• dropped Wistia Jan 2025 · Video players

2024 6 added · 7 dropped

• dropped Polyfill Aug 2024 · JavaScript libraries
• dropped Azure Jun 2024 · PaaS
• dropped Azure Front Door Jun 2024 · Load balancers
• dropped Google Hosted Libraries Jun 2024 · CDN
• dropped Select2 Jun 2024 · JavaScript libraries
• added PDF.js May 2024 · Miscellaneous
• added Priority Hints May 2024 · Performance
• added Amplitude Apr 2024 · Analytics
• added Next.js Jan 2024 · JavaScript frameworks
• added Next.js App Router Jan 2024 · JavaScript frameworks
• added Node.js Jan 2024 · Programming languages
• dropped Plyr Jan 2024 · Video players
• dropped Vue.js Jan 2024 · JavaScript frameworks

2023 19 added · 5 dropped · 2 switched

• added PayPal Dec 2023 · Payment processors
• dropped Envoy Jul 2023 · Reverse proxies
• added Wistia Jul 2023 · Video players
• dropped Pardot Jun 2023 · Marketing automation
• added 6sense May 2023 · Personalisation
• added Azure May 2023 · PaaS
• added Azure Front Door May 2023 · Load balancers
• switched Cloudflare Network Error Logging → GetFeedback May 2023 · Issue trackers
• added Google Hosted Libraries May 2023 · CDN
• added lit-element May 2023 · JavaScript libraries
• added lit-html May 2023 · JavaScript libraries
• added Plyr May 2023 · Video players
• added Select2 May 2023 · JavaScript libraries
• added Tailwind CSS May 2023 · UI frameworks
• added Vue.js May 2023 · JavaScript frameworks
• dropped Rust Apr 2023 · Programming languages
• dropped Snowplow Analytics Apr 2023 · Analytics
• added DocuSign Mar 2023 · Miscellaneous
• dropped Adobe Audience Manager Feb 2023 · Segmentation
• added Azure Feb 2023 · PaaS
• added Azure Front Door Feb 2023 · Load balancers
• added parcel Feb 2023 · Miscellaneous
• switched Java → Rust Feb 2023 · Programming languages
• added SWC Feb 2023 · Miscellaneous
• added Apple iCloud Mail Jan 2023 · Webmail
• added HubSpot Jan 2023 · Marketing automation

2022 48 added · 3 dropped

• dropped Google Ads Conversion Tracking Dec 2022 · Analytics
• added Salesforce Marketing Cloud Account Engagement Dec 2022 · Marketing automation
• added Calendly Sep 2022 · Appointment scheduling
• added HSTS Sep 2022 · Security
• added Java Sep 2022 · Programming languages
• added Open Graph Sep 2022 · Miscellaneous
• added Ada Aug 2022 · Live chat
• added Algolia Aug 2022 · Search engines
• added cdnjs Aug 2022 · CDN
• added Cloudflare Bot Management Aug 2022 · Security
• added Cloudflare Network Error Logging Aug 2022 · Issue trackers
• added Drift Aug 2022 · Live chat
• added Emotion Aug 2022 · JavaScript frameworks
• added FullStory Aug 2022 · Analytics
• added GetFeedback Aug 2022 · Issue trackers
• added Google Ads Conversion Tracking Aug 2022 · Analytics
• added Google Hosted Libraries Aug 2022 · CDN
• added Google Workspace Aug 2022 · Webmail
• added Highlight.js Aug 2022 · JavaScript libraries
• added jsDelivr Aug 2022 · CDN
• added lit-element Aug 2022 · JavaScript libraries
• added lit-html Aug 2022 · JavaScript libraries
• added Microsoft Clarity Aug 2022 · Analytics
• added Pardot Aug 2022 · Marketing automation
• added Plyr Aug 2022 · Video players
• added Preact Aug 2022 · JavaScript libraries
• added PWA Aug 2022 · Miscellaneous
• added Select2 Aug 2022 · JavaScript libraries
• added Sentry Aug 2022 · Issue trackers
• added Snowplow Analytics Aug 2022 · Analytics
• added Tailwind CSS Aug 2022 · UI frameworks
• added Vue.js Aug 2022 · JavaScript frameworks
• added Zendesk Aug 2022 · Issue trackers
• added Zoominfo Aug 2022 · Analytics
• added Emotion Jul 2022 · JavaScript frameworks
• dropped Java Jul 2022 · Programming languages
• added Plyr Jul 2022 · Video players
• added Ada Jun 2022 · Live chat
• added Google Ads Conversion Tracking Jun 2022 · Analytics
• added Microsoft Clarity Jun 2022 · Analytics
• added Preact Jun 2022 · JavaScript libraries
• added Sentry Jun 2022 · Issue trackers
• added Snowplow Analytics Jun 2022 · Analytics
• added Drift May 2022 · Live chat
• added Tailwind CSS Apr 2022 · UI frameworks
• added Cloudflare Network Error Logging Feb 2022 · Issue trackers
• added Google Hosted Libraries Feb 2022 · CDN
• added Solvvy Feb 2022 · Live chat
• dropped Wheelio Feb 2022 · Widgets
• added FullStory Jan 2022 · Analytics
• added Java Jan 2022 · Programming languages

2021 28 added · 15 dropped · 1 switched

• added Cloudflare Bot Management Dec 2021 · Security
• added cdnjs Nov 2021 · CDN
• added Envoy Nov 2021 · Reverse proxies
• dropped Braze Oct 2021 · Marketing automation
• added GetFeedback Oct 2021 · Issue trackers
• dropped Moment.js Oct 2021 · JavaScript libraries
• dropped Ruby Oct 2021 · Programming languages
• dropped Ruby on Rails Oct 2021 · Web frameworks
• dropped Wistia Oct 2021 · Video players
• added core-js Sep 2021 · JavaScript libraries
• switched webpack-2 → Highlight.js Sep 2021 · Miscellaneous
• added Wheelio Sep 2021 · Widgets
• added Algolia Jul 2021 · Search engines
• added MobX Jul 2021 · JavaScript libraries
• added Moment.js Jul 2021 · JavaScript libraries
• added Ruby Jul 2021 · Programming languages
• added Ruby on Rails Jul 2021 · Web frameworks
• added styled-components Jul 2021 · JavaScript frameworks
• added Hotjar Jun 2021 · Analytics
• dropped Mixpanel Jun 2021 · Analytics
• added Select2 Jun 2021 · JavaScript libraries
• dropped Hotjar May 2021 · Analytics
• added Twitter Ads May 2021 · Advertising
• added Twitter Analytics May 2021 · Analytics
• added Wistia May 2021 · Video players
• added Zendesk May 2021 · CMS
• added OneTrust Apr 2021 · Cookie compliance
• added Vue.js Apr 2021 · JavaScript frameworks
• added Hotjar 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 Braze Feb 2021 · Marketing automation
• dropped Go Feb 2021 · Programming languages
• added Google Optimize Feb 2021 · A/B Testing
• added Linkedin Insight Tag Feb 2021 · Analytics
• dropped MobX Feb 2021 · JavaScript libraries
• dropped Nginx Feb 2021 · Reverse proxies
• added Profitwell Feb 2021 · Analytics
• dropped Sentry Feb 2021 · Issue trackers
• added Amazon CloudFront Jan 2021 · CDN
• added Contentful Jan 2021 · CMS
• added Facebook Jan 2021 · Widgets

2020 14 added · 18 dropped · 1 switched

• dropped AngularJS Dec 2020 · JavaScript frameworks
• dropped CodeMirror Dec 2020 · Miscellaneous
• dropped jQuery UI Dec 2020 · JavaScript libraries
• dropped Marked Dec 2020 · JavaScript libraries
• added Caddy Nov 2020 · Web servers
• added Go Nov 2020 · Programming languages
• added MobX Nov 2020 · JavaScript libraries
• switched Caddy → Nginx Nov 2020 · Web servers
• added Sentry Nov 2020 · Issue trackers
• added TinyMCE Nov 2020 · Rich text editors
• added Amazon Web Services Aug 2020 · PaaS
• added Heroku Aug 2020 · PaaS
• dropped Zendesk Aug 2020 · CMS
• dropped Facebook Jul 2020 · Widgets
• dropped jQuery Migrate Jul 2020 · JavaScript libraries
• added jsDelivr Jul 2020 · CDN
• dropped MySQL Jul 2020 · Databases
• dropped Nginx Jul 2020 · Reverse proxies
• dropped PHP Jul 2020 · Programming languages
• dropped TrackJs Jul 2020 · Analytics
• dropped Twitter Emoji (Twemoji) Jul 2020 · Miscellaneous
• dropped WordPress Jul 2020 · Blogs
• dropped WP Engine Jul 2020 · PaaS
• dropped Yoast SEO Jul 2020 · SEO
• added Gatsby Jun 2020 · JavaScript frameworks
• dropped Disqus Apr 2020 · Comment Systems
• added Lodash Mar 2020 · JavaScript Libraries
• dropped Lua Mar 2020 · Programming Languages
• dropped OpenResty Mar 2020 · Web Servers
• added WP Engine Mar 2020 · PaaS
• added Zendesk Mar 2020 · SaaS
• added Facebook Feb 2020 · Widgets
• added TrackJs Feb 2020 · Analytics

2019 15 added · 1 dropped

• dropped WP Engine Oct 2019 · PaaS
• added Google Tag Manager Aug 2019 · Tag Managers
• added WP Engine May 2019 · PaaS
• added Cloudflare Mar 2019 · CDN
• added Disqus Mar 2019 · Comment Systems
• added Font Awesome Mar 2019 · Font Scripts
• added jQuery Migrate Mar 2019 · JavaScript Libraries
• added Moment.js Mar 2019 · JavaScript Libraries
• added MySQL Mar 2019 · Databases
• added PHP Mar 2019 · Programming Languages
• added Prism Mar 2019 · Miscellaneous
• added Ruby Mar 2019 · Programming Languages
• added Ruby on Rails Mar 2019 · Web Frameworks
• added Twitter Emoji (Twemoji) Mar 2019 · Miscellaneous
• added WordPress Mar 2019 · CMS
• added Yoast SEO Mar 2019 · SEO

2018 12 added

• added Prism Nov 2018 · Miscellaneous
• added jQuery Jul 2018 · JavaScript Frameworks
• added Webpack Jul 2018 · Miscellaneous
• added Erlang Jun 2018 · Programming Languages
• added Google Analytics Jun 2018 · Analytics
• added Heap Jun 2018 · Analytics
• added Intercom Jun 2018 · Analytics
• added Mixpanel Jun 2018 · Analytics
• added New Relic Jun 2018 · Analytics
• added React Jun 2018 · JavaScript Frameworks
• added Segment Jun 2018 · Analytics
• added webpack-2 Jun 2018 · Miscellaneous