Technology history for 21th-books.com
Stack size over time
From 18 detected technologies in Oct 2022 to 17 in Jun 2026 (peak 21).
Currently detected
- Contact Form 7 since Oct 2022
- Google Analytics since Oct 2022
- jQuery since Oct 2022
- jQuery Migrate since Oct 2022
- MySQL since Oct 2022
- Nginx since Oct 2022
- Open Graph since Oct 2022
- PHP since Oct 2022
- Sakura Internet since Oct 2022
- Twitter since Oct 2022
- Twitter Ads since Oct 2022
- WordPress since Oct 2022
- Google Hosted Libraries since Aug 2023
- Google Tag Manager since Aug 2023
- jsDelivr since Aug 2023
- Cloudflare since Mar 2025
- Cloudflare Bot Management since Mar 2025
Previously used
- C Feb 2023 to Feb 2023 · 1 mo
- FullCalendar Feb 2023 to Feb 2023 · 1 mo
- Google Maps Oct 2022 to Feb 2023 · 4 mo
- jQuery UI Oct 2022 to Feb 2023 · 4 mo
- Moment.js Oct 2022 to Feb 2023 · 4 mo
- MonsterInsights Oct 2022 to Feb 2023 · 4 mo
- Twitter Emoji (Twemoji) Oct 2022 to Feb 2023 · 4 mo
- TypeScript Feb 2023 to Feb 2023 · 1 mo
- Yoast SEO Oct 2022 to Feb 2023 · 4 mo
Timeline
2026 2 added
- added Cloudflare Apr 2026 · CDN
- added Cloudflare Bot Management Apr 2026 · Security
2025 2 added · 2 dropped
- dropped Cloudflare Nov 2025 · CDN
- dropped Cloudflare Bot Management Nov 2025 · Security
- added Cloudflare Mar 2025 · CDN
- added Cloudflare Bot Management Mar 2025 · Security
2023 9 dropped
- dropped C Sep 2023 · Programming languages
- dropped FullCalendar Sep 2023 · Widgets
- dropped Google Maps Sep 2023 · Maps
- dropped jQuery UI Sep 2023 · JavaScript libraries
- dropped Moment.js Sep 2023 · JavaScript libraries
- dropped MonsterInsights Sep 2023 · WordPress plugins
- dropped Twitter Emoji (Twemoji) Sep 2023 · Font scripts
- dropped TypeScript Sep 2023 · Programming languages
- dropped Yoast SEO Sep 2023 · WordPress plugins