Technology history for 21lessons.com
Stack size over time
From 4 detected technologies in Mar 2021 to 17 in May 2026.
Currently detected
- Varnish since Mar 2021
- Fastly since Mar 2021
- GitHub Pages since Mar 2021
- jQuery since Jun 2021
- Amazon Advertising since Jun 2021
- Amazon Associates since Jun 2021
- Patreon since Jul 2021
- cdnjs since May 2022
- Cloudflare since May 2022
- GoDaddy since Aug 2022
- PWA since Aug 2022
- HSTS since Sep 2022
- Open Graph since Sep 2022
- Font Awesome since Oct 2022
- RSS since Dec 2022
- AOS since Jan 2023
- Fathom since Dec 2025
Previously used
- Ruby Jun 2021 to May 2022 · 11 mo
- Ruby on Rails Mar 2021 to May 2022 · 1 yr
- Wheelio Sep 2021 to Oct 2021 · 1 mo
Timeline
2025 1 added
- added Fathom Dec 2025 · Analytics
2023 17 added
- added Amazon Advertising May 2023 · Advertising
- added Amazon Associates May 2023 · Affiliate programs
- added AOS May 2023 · JavaScript libraries
- added cdnjs May 2023 · CDN
- added Cloudflare May 2023 · CDN
- added Fastly May 2023 · CDN
- added Font Awesome May 2023 · Font scripts
- added GitHub Pages May 2023 · PaaS
- added GoDaddy May 2023 · Hosting
- added HSTS May 2023 · Security
- added jQuery May 2023 · JavaScript libraries
- added Open Graph May 2023 · Miscellaneous
- added Patreon May 2023 · Widgets
- added PWA May 2023 · Miscellaneous
- added RSS May 2023 · Miscellaneous
- added Varnish May 2023 · Caching
- added AOS Jan 2023 · JavaScript libraries
2022 17 added · 2 dropped
- added RSS Dec 2022 · Miscellaneous
- added Font Awesome Oct 2022 · Font scripts
- added HSTS Sep 2022 · Security
- added Open Graph Sep 2022 · Miscellaneous
- added Amazon Advertising Aug 2022 · Advertising
- added Amazon Associates Aug 2022 · Affiliate programs
- added cdnjs Aug 2022 · CDN
- added Cloudflare Aug 2022 · CDN
- added Fastly Aug 2022 · CDN
- added GitHub Pages Aug 2022 · PaaS
- added GoDaddy Aug 2022 · Hosting
- added jQuery Aug 2022 · JavaScript libraries
- added Patreon Aug 2022 · Widgets
- added PWA Aug 2022 · Miscellaneous
- added Varnish Aug 2022 · Caching
- dropped Ruby Jul 2022 · Programming languages
- dropped Ruby on Rails Jul 2022 · Web frameworks
- added cdnjs May 2022 · CDN
- added Cloudflare May 2022 · CDN
2021 6 added · 1 dropped
- dropped Wheelio Dec 2021 · Widgets
- added Wheelio Sep 2021 · Widgets
- added Patreon Jul 2021 · Payment processors
- added Amazon Advertising Jun 2021 · Advertising
- added Amazon Associates Jun 2021 · Affiliate programs
- added jQuery Jun 2021 · JavaScript libraries
- added Ruby Jun 2021 · Programming languages