Technology history for cs61c.org
Stack size over time
From 10 detected technologies in Apr 2019 to 22 in Jun 2026.
Currently detected
- Cloudflare since Apr 2019
- GitHub Pages since Apr 2019
- jQuery since Apr 2019
- Moment.js since Apr 2019
- Varnish since Apr 2019
- Bootstrap since Apr 2019
- Fastly since Apr 2019
- Instant.Page since Nov 2021
- cdnjs since Nov 2021
- HTTP/3 since Sep 2022
- AlertifyJS since Oct 2022
- GSAP since Oct 2022
- CodeMirror since Oct 2022
- Babel since Aug 2024
- Google Cloud since Aug 2024
- Node.js since Aug 2024
- core-js since Aug 2024
- PWA since Aug 2024
- React since Aug 2024
- Socket.io since Aug 2024
- Google Cloud Trace since Aug 2024
- SweetAlert2 since Aug 2024
Previously used
- Cloudflare Network Error Logging Feb 2022 to Oct 2022 · 8 mo
- Wheelio Sep 2021 to Oct 2021 · 1 mo
- Google Analytics Feb 2020 to Jun 2021 · 1 yr
- Google Font API Apr 2019 to Jun 2021 · 2 yrs
- MathJax Feb 2020 to Jun 2021 · 1 yr
- Popper Feb 2021 to Jun 2021 · 4 mo
- Ruby on Rails Apr 2019 to Jun 2021 · 2 yrs
- Google Tag Manager Feb 2020 to Mar 2021 · 1 yr
- Font Awesome Jul 2020 to Jan 2021 · 6 mo
- Ruby Apr 2019 to Jan 2021 · 1 yr
Timeline
2025 1 dropped
- dropped Cloudflare Network Error Logging May 2025 · Issue trackers
2022 7 added
- added HTTP/3 Sep 2022 · Miscellaneous
- added Bootstrap Aug 2022 · UI frameworks
- added cdnjs Aug 2022 · CDN
- added Cloudflare Aug 2022 · CDN
- added Cloudflare Network Error Logging Aug 2022 · Issue trackers
- added Instant.Page Aug 2022 · JavaScript libraries
- added Cloudflare Network Error Logging Feb 2022 · Issue trackers
2021 5 added · 15 dropped
- dropped Wheelio Dec 2021 · Widgets
- added cdnjs Nov 2021 · CDN
- added Instant.Page Nov 2021 · Performance
- added Bootstrap Oct 2021 · UI frameworks
- added Wheelio Sep 2021 · Widgets
- dropped Bootstrap Aug 2021 · UI frameworks
- dropped Fastly Aug 2021 · CDN
- dropped GitHub Pages Aug 2021 · PaaS
- dropped Google Analytics Aug 2021 · Analytics
- dropped Google Font API Aug 2021 · Font scripts
- dropped jQuery Aug 2021 · JavaScript libraries
- dropped MathJax Aug 2021 · JavaScript graphics
- dropped Moment.js Aug 2021 · JavaScript libraries
- dropped Popper Aug 2021 · Miscellaneous
- dropped Ruby on Rails Aug 2021 · Web frameworks
- dropped Varnish Aug 2021 · Caching
- dropped Google Tag Manager May 2021 · Tag managers
- dropped Font Awesome Mar 2021 · Font scripts
- dropped Ruby Mar 2021 · Programming languages
- added Popper Feb 2021 · Miscellaneous
2020 1 added
- added Font Awesome Jul 2020 · Font scripts