Technology history for 21stcentech.com
Stack size over time
From 20 detected technologies in Jan 2019 to 22 in Jun 2026 (peak 23).
Currently detected
- jQuery since Jan 2019
- Nginx since Jan 2019
- Disqus since Jan 2019
- PHP since Jan 2019
- Twitter Emoji (Twemoji) since Jan 2019
- WordPress Super Cache since Jan 2019
- Google Analytics since Jan 2019
- MySQL since Jan 2019
- WordPress since Jan 2019
- Google Font API since May 2019
- Apache HTTP Server since Oct 2019
- jQuery Migrate since Jun 2020
- Google Hosted Libraries since Feb 2022
- ExactMetrics since Feb 2022
- Open Graph since Sep 2022
- RSS since Dec 2022
- core-js since Dec 2023
- Webpack since Dec 2023
- Really Simple SSL & Security since Apr 2024
- Site Kit since May 2024
- Priority Hints since Dec 2025
- Yoast SEO since Jan 2026
Previously used
- Google Tag Manager Nov 2019 to Apr 2026 · 6 yrs
- Google AdSense Jan 2019 to Jan 2025 · 6 yrs
- Hammer.js Dec 2022 to Sep 2023 · 9 mo
- Select2 Dec 2022 to Sep 2023 · 9 mo
- Underscore.js Jun 2020 to Sep 2023 · 3 yrs
- C Feb 2023 to Feb 2023 · 1 mo
- Google Remarketing Tag Jul 2021 to May 2022 · 10 mo
- Wheelio Sep 2021 to Oct 2021 · 1 mo
- Matomo Jan 2019 to Jun 2020 · 1 yr
- AppNexus Jan 2019 to May 2020 · 1 yr
- jQuery UI Jan 2019 to May 2020 · 1 yr
- Po.st Jan 2019 to May 2020 · 1 yr
- Prebid Jan 2019 to May 2020 · 1 yr
- Quantcast Measure Jan 2019 to May 2020 · 1 yr
- Smart Ad Server Jan 2019 to May 2020 · 1 yr
- Twitter Jan 2019 to May 2020 · 1 yr
- YouTube Jan 2019 to May 2020 · 1 yr
- reCAPTCHA Sep 2019 to Nov 2019 · 2 mo
- Criteo Jan 2019 to Jan 2019 · 1 mo
Timeline
2026 2 added · 1 dropped
- added Apache HTTP Server Jun 2026 · Web servers
- dropped Google Tag Manager Jun 2026 · Tag managers
- added Yoast SEO Jan 2026 · WordPress plugins
2025 2 added · 1 dropped
- added Priority Hints Dec 2025 · Performance
- added Twitter Emoji (Twemoji) Dec 2025 · Font scripts
- dropped Google AdSense Mar 2025 · Advertising
2024 4 added
- added Disqus Sep 2024 · Comment systems
- added Site Kit May 2024 · WordPress plugins
- added Really Simple SSL & Security Apr 2024 · Security
- added Google AdSense Jan 2024 · Advertising
2023 23 added · 8 dropped · 1 switched
- added core-js Dec 2023 · JavaScript libraries
- added Webpack Dec 2023 · Miscellaneous
- dropped Hammer.js Nov 2023 · JavaScript libraries
- dropped Select2 Nov 2023 · JavaScript libraries
- dropped Underscore.js Nov 2023 · JavaScript libraries
- dropped Disqus Sep 2023 · Comment systems
- added Google Tag Manager Aug 2023 · Tag managers
- added Select2 Aug 2023 · JavaScript libraries
- added Underscore.js Aug 2023 · JavaScript libraries
- dropped Select2 Jul 2023 · JavaScript libraries
- dropped Underscore.js Jul 2023 · JavaScript libraries
- added Disqus May 2023 · Comment systems
- added ExactMetrics May 2023 · WordPress plugins
- added Google Analytics May 2023 · Analytics
- added Google Font API May 2023 · Font scripts
- added Google Hosted Libraries May 2023 · CDN
- added Hammer.js May 2023 · JavaScript libraries
- added jQuery May 2023 · JavaScript libraries
- added jQuery Migrate May 2023 · JavaScript libraries
- added MySQL May 2023 · Databases
- added Nginx May 2023 · Web servers
- added Open Graph May 2023 · Miscellaneous
- switched C PHP May 2023 · Programming languages
- added RSS May 2023 · Miscellaneous
- added Select2 May 2023 · JavaScript libraries
- dropped Twitter Emoji (Twemoji) May 2023 · Font scripts
- added Underscore.js May 2023 · JavaScript libraries
- added WordPress May 2023 · CMS
- added WordPress Super Cache May 2023 · Caching
- dropped Apache HTTP Server Mar 2023 · Web servers
- added C Feb 2023 · Programming languages
- added Nginx Feb 2023 · Web servers
2022 21 added · 3 dropped
- dropped Google Tag Manager Dec 2022 · Tag managers
- added Hammer.js Dec 2022 · JavaScript libraries
- added RSS Dec 2022 · Miscellaneous
- added Select2 Dec 2022 · JavaScript libraries
- added Open Graph Sep 2022 · Miscellaneous
- added Apache HTTP Server Aug 2022 · Web servers
- added Disqus Aug 2022 · Comment systems
- added ExactMetrics Aug 2022 · WordPress plugins
- added Google Analytics Aug 2022 · Analytics
- added Google Font API Aug 2022 · Font scripts
- added Google Hosted Libraries Aug 2022 · CDN
- added Google Tag Manager Aug 2022 · Tag managers
- added jQuery Aug 2022 · JavaScript libraries
- added jQuery Migrate Aug 2022 · JavaScript libraries
- added MySQL Aug 2022 · Databases
- added PHP Aug 2022 · Programming languages
- added Twitter Emoji (Twemoji) Aug 2022 · Font scripts
- added Underscore.js Aug 2022 · JavaScript libraries
- added WordPress Aug 2022 · CMS
- dropped Google Remarketing Tag Jul 2022 · Retargeting
- added Underscore.js Mar 2022 · JavaScript libraries
- added ExactMetrics Feb 2022 · Analytics
- added Google Hosted Libraries Feb 2022 · CDN
- dropped Underscore.js Jan 2022 · JavaScript libraries
2021 11 added · 8 dropped
- dropped Wheelio Dec 2021 · Widgets
- dropped Nginx Nov 2021 · Reverse proxies
- added Underscore.js Nov 2021 · JavaScript libraries
- added WordPress Super Cache Nov 2021 · Caching
- added Apache HTTP Server Oct 2021 · Web servers
- dropped WordPress Super Cache Oct 2021 · Caching
- dropped Underscore.js Sep 2021 · JavaScript libraries
- added Wheelio Sep 2021 · Widgets
- dropped Apache HTTP Server Jul 2021 · Web servers
- added Disqus Jul 2021 · Comment systems
- added Google Remarketing Tag Jul 2021 · Retargeting
- added Google Tag Manager Jul 2021 · Tag managers
- added Twitter Emoji (Twemoji) Jul 2021 · Font scripts
- dropped Google Tag Manager Jun 2021 · Tag managers
- added Nginx Jun 2021 · Web servers
- dropped Disqus Mar 2021 · Comment systems
- added jQuery Migrate Mar 2021 · JavaScript libraries
- dropped Twitter Emoji (Twemoji) Mar 2021 · Miscellaneous
- added Underscore.js Mar 2021 · JavaScript libraries
2020 2 added · 13 dropped
- dropped Underscore.js Dec 2020 · JavaScript libraries
- dropped jQuery Migrate Oct 2020 · JavaScript libraries
- dropped Matomo Aug 2020 · Analytics
- dropped AppNexus Jul 2020 · Advertising
- dropped Google AdSense Jul 2020 · Advertising
- dropped jQuery UI Jul 2020 · JavaScript libraries
- dropped Po.st Jul 2020 · Widgets
- dropped Prebid Jul 2020 · Advertising
- dropped Quantcast Measure Jul 2020 · Analytics
- dropped Smart Ad Server Jul 2020 · Advertising
- dropped Twitter Jul 2020 · Miscellaneous
- dropped YouTube Jul 2020 · Video players
- added jQuery Migrate Jun 2020 · JavaScript libraries
- added Underscore.js Jun 2020 · JavaScript libraries
- dropped reCAPTCHA Jan 2020 · Captchas
2019 23 added · 2 dropped
- added Google Tag Manager Nov 2019 · Tag Managers
- dropped Nginx Nov 2019 · Web Servers
- added Apache HTTP Server Oct 2019 · Web Servers
- added reCAPTCHA Sep 2019 · Captchas
- added Google Font API May 2019 · Font Scripts
- added AppNexus Mar 2019 · Advertising Networks
- dropped Criteo Mar 2019 · Advertising Networks
- added Disqus Mar 2019 · Comment Systems
- added Google AdSense Mar 2019 · Advertising Networks
- added Google Analytics Mar 2019 · Analytics
- added jQuery Mar 2019 · JavaScript Libraries
- added jQuery UI Mar 2019 · JavaScript Libraries
- added Matomo Mar 2019 · Analytics
- added MySQL Mar 2019 · Databases
- added Nginx Mar 2019 · Web Servers
- added PHP Mar 2019 · Programming Languages
- added Po.st Mar 2019 · Widgets
- added Prebid Mar 2019 · Advertising Networks
- added Quantcast Measure Mar 2019 · Analytics
- added Smart Ad Server Mar 2019 · Advertising Networks
- added Twitter Mar 2019 · Widgets
- added Twitter Emoji (Twemoji) Mar 2019 · Miscellaneous
- added WordPress Mar 2019 · Blogs
- added WordPress Super Cache Mar 2019 · Cache Tools
- added YouTube Mar 2019 · Video Players