Ansafi
Sign inStart free
2026-08-01 crawl · observed, not inferred

Technology used by stamps.com

Buy USPS postage online from your PC, easily print postage stamps and shipping labels for all USPS mail classes.

61
technologies detected
stamps.com
company
1001-5000
employees
computer software
industry
united states
location

Recent changes

2026-07-01 dropped LottieFilesconfirmed
2026-07-01 dropped Zendesk Sunshine Conversationsconfirmed
2026-06-01 dropped Venmoconfirmed
2026-05-01 dropped Twitter typeahead.jsconfirmed
2026-05-01 dropped Twitterconfirmed
2026-05-01 dropped Webpackconfirmed
2026-05-01 dropped Google Code Prettifyconfirmed
2026-05-01 dropped Twitter Adsconfirmed
2026-05-01 dropped Mouse Flowconfirmed
2026-05-01 dropped Lodashconfirmed
2026-05-01 dropped Klaviyoconfirmed

Full detected stack

Everything detected on this domain in the latest monthly crawl, grouped by what it does. ↩ marks when we first observed it — no later than that date, not necessarily when they adopted it. Faded dates were seen in fewer than four crawls.

Analytics
Snowplow Analytics↩ Jul 2023LogRocket↩ Jun 2024Quora Pixel↩ Jun 2026Linkedin Insight Tag↩ Feb 2024HubSpot Analytics↩ Sept 2023Google Analytics↩ May 2018Facebook Pixel2.9.373↩ Jul 2021
JavaScript libraries
jQuery UI1.13.3↩ Jul 2018core-js3.32.2↩ Sept 2021Swiper↩ Oct 2024jQuery Migrate3.4.1↩ Jul 2018jQuery3.7.1↩ May 2018core-js3.21.0↩ Sept 2021
CDN
Unpkg↩ May 2023jsDelivr↩ Nov 2020Cloudflare↩ Jul 2020Amazon S3↩ Mar 2021Amazon S3↩ Mar 2021Amazon CloudFront↩ May 2023
Miscellaneous
RSS↩ Dec 2022Open Graph↩ Sept 2022HTTP/3↩ Sept 2022DocuSign↩ Aug 2022Open Graph↩ Sept 2022DocuSign↩ Aug 2022
Advertising
theTradeDesk↩ May 2023Reddit Ads↩ Nov 2024Podsights↩ Jul 2022Microsoft Advertising↩ Feb 2021
Issue trackers
Atlassian Statuspage↩ Jul 2020Sentry↩ Nov 2020Atlassian Statuspage↩ Jul 2020
PaaS
Amazon Web Services↩ May 2019WP Engine↩ Mar 2020Amazon Web Services↩ May 2019
Security
HSTS↩ Sept 2022Cloudflare Bot Management↩ Sept 2023HSTS↩ Sept 2022
WordPress plugins
Kadence WP Blocks↩ Aug 2024Yoast SEO28.2|28.2↩ Jul 2018
Customer data platform
Segment↩ May 2021Segment↩ May 2021
Webmail
Google Workspace↩ Aug 2022Google Workspace↩ Aug 2022
Font scripts
Font Awesome↩ Oct 2019Google Font API↩ Jul 2018
Page builders
WordPress Block Editor↩ Jul 2024
CMS
WordPress↩ Jul 2018
Databases
MySQL↩ Jul 2018
Programming languages
PHP↩ Jul 2018
UI frameworks
Tailwind CSS↩ Apr 2022
SEO
Yoast SEO Premium19.1↩ Jul 2022
Marketing automation
HubSpot↩ Sept 2023
Performance
Priority Hints↩ Feb 2023
Cart abandonment
UpSellit↩ Jun 2026
A/B Testing
Optimizely↩ May 2023
Cookie compliance
OneTrust↩ Jul 2024
Live chat
HubSpot Chat↩ Mar 2025
Tag managers
Google Tag Manager↩ Jul 2018
Segmentation
Adobe Audience Manager↩ Apr 2022
JavaScript frameworks
JSS↩ Feb 2022
Who else runs this stack?

Build a list of companies using any of these, filtered by size, industry and country — with every prospect's full stack attached.

Build a list →