offerup.com

Payment processing platform for online businesses

Google platform measuring website traffic and visitor behavior

Tag management system deploying analytics and marketing tags without code

Amazon's advertising and product promotion platform.

Programmatic advertising exchange platform.

Google tag tracking conversions from advertising campaigns

Google Ad Manager tag serving ads into page slots

Customer messaging platform for email, push and in-app campaigns

Customer support platform with live chat and helpdesk

Marketing, CRM, and automation platform for businesses

Cloud CRM platform for sales, marketing, and service

Google suite for business email, docs, and collaboration tools

Email security and continuity service for businesses

Generic Adobe product or integration detected on the site

Generic Atlassian software integration detected on the site

Online design tool with website publishing capabilities.

Electronic signature and agreement management platform

Remote access and support software.

Online collaborative whiteboard platform.

Collaborative workspace for notes, docs, and wikis.

Mailchimp transactional email delivery service

Transactional email API service for sending and tracking mail

Google backend platform providing hosting, database, and auth services

Global CDN and edge platform delivering and protecting websites

Generic Apple service or integration detected on the site

Cloudflare service detecting and mitigating malicious bot traffic

Certificate authority issuing SSL/TLS and identity certificates

Google identity service enabling sign-in with a Google account

HTTP header forcing browsers to use secure HTTPS connections

High-performance service proxy for cloud-native applications

Minimal web application framework for Node.js

JavaScript runtime for building server-side applications

React UI component library based on Material Design.

React component library implementing Google's Material Design.

JavaScript library for building component-based user interfaces

Generic Google service or script detected on the site

Metadata protocol controlling how page links preview on social platforms

Developer of the Claude AI models and the API behind them. Sites listed here have verified their domain with Anthropic

Mobile attribution and marketing analytics platform for app publishers

Mobile deep linking and attribution service for apps