Technology history for atcoder.jp
Stack size over time
From 4 detected technologies in Apr 2018 to 44 in Jun 2026.
Currently detected
- Ubuntu since Apr 2018
- Bootstrap since Apr 2018
- jQuery since Apr 2018
- Nginx since Apr 2018
- Facebook since Jun 2018
- Google Analytics since Jun 2018
- PHP since Jun 2018
- Google Code Prettify since Aug 2018
- Google Font API since Aug 2018
- Marked since Aug 2018
- MathJax since Aug 2018
- math.js since Aug 2018
- Moment.js since Aug 2018
- YouTube since Aug 2018
- Google Tag Manager since Oct 2018
- Twitter since Jan 2019
- AddToAny since Feb 2019
- jsDelivr since Jul 2020
- Slick since Jan 2021
- MySQL since Jan 2021
- WordPress since Jan 2021
- Revel since Sep 2021
- KaTeX since Sep 2021
- Go since Sep 2021
- cdnjs since Nov 2021
- Cloudflare since May 2022
- Google Workspace since Aug 2022
- Amazon Web Services since Aug 2022
- Open Graph since Sep 2022
- HSTS since Sep 2022
- Salesforce Marketing Cloud Account Engagement since Dec 2022
- Amazon CloudFront since Jul 2023
- Hatena Blog since Jan 2024
- RSS since Jan 2024
- Sentry since Jan 2024
- Varnish since Jan 2024
- Alpine.js since Jan 2024
- core-js since Jan 2024
- Facebook Login since Jan 2024
- MonsterInsights since Jan 2024
- Twitter Ads since Jan 2024
- Amazon SES since Feb 2024
- Stripe since Oct 2024
- Cloudflare Bot Management since Mar 2025
Previously used
- C Feb 2023 to Feb 2023 · 1 mo
- Pardot Jan 2021 to Nov 2022 · 1 yr
- Google Remarketing Tag Jul 2021 to May 2022 · 10 mo
- Wheelio Sep 2021 to Oct 2021 · 1 mo
Timeline
2026 1 added
- added Cloudflare Bot Management May 2026 · Security
2025 1 added · 1 dropped
- dropped Cloudflare Bot Management Nov 2025 · Security
- added Cloudflare Bot Management Mar 2025 · Security
2024 2 added · 1 dropped
- added Stripe Oct 2024 · Payment processors
- added Amazon SES Feb 2024 · Email
- dropped Pardot Jan 2024 · Marketing automation
2023 8 added · 1 switched
- added Amazon CloudFront Jul 2023 · CDN
- added cdnjs May 2023 · CDN
- added Cloudflare May 2023 · CDN
- switched C Go May 2023 · Programming languages
- added HSTS May 2023 · Security
- added jsDelivr May 2023 · CDN
- added KaTeX May 2023 · JavaScript graphics
- added Revel May 2023 · Web frameworks
- added C Feb 2023 · Programming languages
2022 12 added · 2 dropped
- added Salesforce Marketing Cloud Account Engagement Dec 2022 · Marketing automation
- added HSTS Sep 2022 · Security
- added Open Graph Sep 2022 · Miscellaneous
- added Amazon Web Services Aug 2022 · PaaS
- added cdnjs Aug 2022 · CDN
- added Cloudflare Aug 2022 · CDN
- added Go Aug 2022 · Programming languages
- added Google Workspace Aug 2022 · Webmail
- added jsDelivr Aug 2022 · CDN
- added KaTeX Aug 2022 · JavaScript graphics
- added Revel Aug 2022 · Web frameworks
- dropped Google Remarketing Tag Jul 2022 · Retargeting
- dropped Wheelio Jun 2022 · Widgets
- added Cloudflare May 2022 · CDN
2021 7 added · 1 dropped
- added cdnjs Nov 2021 · CDN
- added Go Sep 2021 · Programming languages
- added KaTeX Sep 2021 · JavaScript graphics
- added Revel Sep 2021 · Web frameworks
- added Wheelio Sep 2021 · Widgets
- added Google Remarketing Tag Jul 2021 · Retargeting
- added Pardot Jun 2021 · Marketing automation
- dropped Pardot May 2021 · Marketing automation
2020 1 added
- added jsDelivr Jul 2020 · CDN
2019 5 added
- added AddToAny Mar 2019 · Widgets
- added Google Tag Manager Mar 2019 · Tag Managers
- added Marked Mar 2019 · JavaScript Libraries
- added MathJax Mar 2019 · JavaScript Graphics
- added AddToAny Feb 2019 · Widgets
2018 4 added
- added Google Tag Manager Oct 2018 · Tag Managers
- added Facebook Jun 2018 · Widgets
- added Google Analytics Jun 2018 · Analytics
- added PHP Jun 2018 · Programming Languages