Technology history for leetcode.com

2025 1 added · 1 dropped

• dropped Headless UI Aug 2025 · UI frameworks
• added Envoy May 2025 · Reverse proxies

2024 1 added · 2 dropped

• dropped Tailwind CSS Apr 2024 · UI frameworks
• added Cloudflare Bot Management Mar 2024 · Security
• dropped Google AdSense Jan 2024 · Advertising

2023 6 added · 3 dropped · 1 switched

• added Google AdSense Nov 2023 · Advertising
• added Headless UI Nov 2023 · UI frameworks
• dropped Cloudflare Bot Management Sep 2023 · Security
• added Tailwind CSS Sep 2023 · UI frameworks
• dropped Node.js May 2023 · Programming languages
• added Datadog Apr 2023 · RUM
• added Elixir Apr 2023 · Programming languages
• added Erlang Apr 2023 · Programming languages
• switched Phoenix → Phoenix Framework Apr 2023 · Web frameworks
• dropped Java Jan 2023 · Programming languages

2022 28 added · 3 dropped

• dropped Cloudflare Network Error Logging Dec 2022 · Issue trackers
• dropped Google Ads Conversion Tracking Dec 2022 · Analytics
• dropped Envoy Sep 2022 · Reverse proxies
• added HSTS Sep 2022 · Security
• added Open Graph Sep 2022 · Miscellaneous
• added Amazon SES Aug 2022 · Email
• added Amazon Web Services Aug 2022 · PaaS
• added Babel Aug 2022 · Miscellaneous
• added Cloudflare Bot Management Aug 2022 · Security
• added Cloudflare Network Error Logging Aug 2022 · Issue trackers
• added core-js Aug 2022 · JavaScript libraries
• added Emotion Aug 2022 · JavaScript frameworks
• added Google Ads Conversion Tracking Aug 2022 · Analytics
• added Google Tag Manager Aug 2022 · Tag managers
• added Google Workspace Aug 2022 · Email
• added GrowingIO Aug 2022 · Analytics
• added Intercom Aug 2022 · Live chat
• added Java Aug 2022 · Programming languages
• added Moment.js Aug 2022 · JavaScript libraries
• added Monaco Editor Aug 2022 · Rich text editors
• added Node.js Aug 2022 · Programming languages
• added Phoenix Aug 2022 · Web frameworks
• added reCAPTCHA Aug 2022 · Security
• added Ruby Aug 2022 · Programming languages
• added Ruby on Rails Aug 2022 · Web frameworks
• added Sendgrid Aug 2022 · Email
• added Sentry Aug 2022 · Issue trackers
• added Vimeo Aug 2022 · Video players
• added Zendesk Aug 2022 · Issue trackers
• added Monaco Editor Apr 2022 · Rich text editors
• added Cloudflare Network Error Logging Feb 2022 · Issue trackers

2021 14 added · 7 dropped

• added Cloudflare Bot Management Dec 2021 · Security
• dropped Wheelio Dec 2021 · Widgets
• added Envoy Nov 2021 · Reverse proxies
• added Java Oct 2021 · Programming languages
• added core-js Sep 2021 · JavaScript libraries
• added Wheelio Sep 2021 · Widgets
• added Intercom Aug 2021 · Live chat
• added Vimeo Aug 2021 · Video players
• added Babel Jul 2021 · Miscellaneous
• added Sentry Jul 2021 · Issue trackers
• added GrowingIO Jun 2021 · Analytics
• added Moment.js Jun 2021 · JavaScript libraries
• added Ruby Jun 2021 · Programming languages
• added Ruby on Rails Jun 2021 · Web frameworks
• added Zendesk May 2021 · Live chat
• dropped Babel Mar 2021 · Miscellaneous
• dropped Moment.js Mar 2021 · JavaScript libraries
• dropped Ruby Mar 2021 · Programming languages
• dropped Ruby on Rails Mar 2021 · Web frameworks
• dropped Sentry Mar 2021 · Issue trackers
• dropped TinyMCE Mar 2021 · Rich text editors

2020 4 added · 2 dropped

• added reCAPTCHA Nov 2020 · Security
• added TinyMCE Oct 2020 · Rich text editors
• dropped Zendesk Aug 2020 · CMS
• dropped GrowingIO Jun 2020 · Analytics
• added Babel Mar 2020 · Miscellaneous
• added Zendesk Mar 2020 · Live Chat

2019 2 added

• added Sentry Nov 2019 · Issue Trackers
• added GrowingIO May 2019 · Analytics

2018 1 added

• added Webpack Jul 2018 · Miscellaneous