Technology history for nber.org
Stack size over time
From 8 detected technologies in Apr 2018 to 36 in Jun 2026 (peak 38).
Currently detected
- FreeBSD since Apr 2018
- mod_perl since Apr 2018
- mod_wsgi since Apr 2018
- OpenSSL since Apr 2018
- Python since Apr 2018
- Apache HTTP Server since Apr 2018
- jQuery since Apr 2018
- Perl since Jun 2018
- PHP since Jun 2018
- Dojo since Aug 2018
- Google Analytics since Aug 2018
- Drupal since Nov 2020
- Font Awesome since Nov 2020
- MariaDB since Nov 2020
- New Relic since Nov 2020
- Nginx since Nov 2020
- Pantheon since Nov 2020
- Google Tag Manager since Nov 2020
- Polyfill since Nov 2020
- React since Nov 2020
- Bootstrap since Nov 2020
- Varnish since Nov 2020
- YouTube since Dec 2020
- Fastly since Feb 2021
- Google Font API since Jun 2021
- D3 since Jul 2021
- Emotion since Jul 2021
- core-js since Sep 2021
- LazySizes since Feb 2022
- Open Graph since Sep 2022
- HSTS since Sep 2022
- cdnjs since Jan 2024
- Cloudflare since Jan 2024
- Microsoft ASP.NET since Feb 2024
- IIS since Feb 2024
- Windows Server since Feb 2024
Previously used
- PWA Apr 2024 to Nov 2024 · 7 mo
- Sendgrid Oct 2024 to Oct 2024 · 1 mo
- C Feb 2023 to Feb 2023 · 1 mo
- Java Sep 2021 to Oct 2022 · 1 yr
- Google Cloud Apr 2022 to Sep 2022 · 5 mo
- Google Cloud Trace Apr 2022 to Sep 2022 · 5 mo
- Tailwind CSS Apr 2022 to Apr 2022 · 1 mo
- Wheelio Sep 2021 to Oct 2021 · 1 mo
- Lightbox Aug 2018 to Jan 2020 · 1 yr
- jQuery Mobile Apr 2018 to May 2018 · 1 mo
Timeline
2025 1 dropped
- dropped PWA Feb 2025 · Miscellaneous
2024 3 added · 1 dropped
- dropped Sendgrid Dec 2024 · Email
- added Sendgrid Oct 2024 · Email
- added cdnjs Jan 2024 · CDN
- added Cloudflare Jan 2024 · CDN
2023 8 added · 1 dropped · 1 switched
- added core-js May 2023 · JavaScript libraries
- added D3 May 2023 · JavaScript graphics
- added Emotion May 2023 · JavaScript frameworks
- added Fastly May 2023 · CDN
- added Google Font API May 2023 · Font scripts
- added HSTS May 2023 · Security
- added LazySizes May 2023 · JavaScript libraries
- added Open Graph May 2023 · Miscellaneous
- dropped C Apr 2023 · Programming languages
- switched Java C Feb 2023 · Programming languages
2022 14 added · 4 dropped
- dropped Google Cloud Dec 2022 · IaaS
- dropped Google Cloud Trace Dec 2022 · Performance
- added HSTS Sep 2022 · Security
- added Open Graph Sep 2022 · Miscellaneous
- added core-js Aug 2022 · JavaScript libraries
- added D3 Aug 2022 · JavaScript graphics
- added Emotion Aug 2022 · JavaScript frameworks
- added Fastly Aug 2022 · CDN
- added Google Cloud Aug 2022 · IaaS
- added Google Cloud Trace Aug 2022 · Performance
- added Java Aug 2022 · Programming languages
- added LazySizes Aug 2022 · JavaScript libraries
- dropped Tailwind CSS Jun 2022 · UI frameworks
- dropped Wheelio Jun 2022 · Widgets
- added Google Cloud Apr 2022 · IaaS
- added Google Cloud Trace Apr 2022 · Performance
- added Tailwind CSS Apr 2022 · UI frameworks
- added LazySizes Feb 2022 · JavaScript libraries
2021 7 added · 1 dropped
- added core-js Sep 2021 · JavaScript libraries
- dropped Google Font API Sep 2021 · Font scripts
- added Java Sep 2021 · Programming languages
- added Wheelio Sep 2021 · Widgets
- added D3 Jul 2021 · JavaScript graphics
- added Emotion Jul 2021 · Development
- added Google Font API Jun 2021 · Font scripts
- added Fastly Feb 2021 · CDN
2020 12 added · 1 dropped
- added YouTube Dec 2020 · Video players
- added Bootstrap Nov 2020 · UI frameworks
- added Drupal Nov 2020 · CMS
- added Font Awesome Nov 2020 · Font scripts
- added Google Tag Manager Nov 2020 · Tag managers
- added MariaDB Nov 2020 · Databases
- added New Relic Nov 2020 · Analytics
- added Nginx Nov 2020 · Reverse proxies
- added Pantheon Nov 2020 · PaaS
- added Polyfill Nov 2020 · JavaScript libraries
- added React Nov 2020 · JavaScript frameworks
- added Varnish Nov 2020 · Caching
- dropped Lightbox Apr 2020 · JavaScript Libraries
2018 2 added · 1 dropped
- dropped jQuery Mobile Jul 2018 · Mobile Frameworks
- added Perl Jun 2018 · Programming Languages
- added PHP Jun 2018 · Programming Languages