OfferUp is a platform for buying and selling items locally. Users can post listings of various goods, from clothing and electronics to vehicles and furniture. The website and accompanying mobile app facilitate transactions between individuals in a specific geographic area.
This website is categorized in Auto Buying and Selling, Small and Medium-sized Business and Retail Industry, providing comprehensive solutions across these business domains.
The website offerup.com is built with 20 technologies.
Advertising
Amazon Advertising
Websites built with Amazon AdvertisingAmazon Advertising (formerly AMS or Amazon Marketing Services) is a service that works in a similar way to pay-per-click ads on Google.
AppNexus
Websites built with AppNexusAppNexus is a cloud-based software platform that enables and optimizes programmatic online advertising.
Google Publisher Tag
Websites built with Google Publisher TagGoogle Publisher Tag (GPT) is an ad tagging library for Google Ad Manager which is used to dynamically build ad requests.
Rubicon Project
Websites built with Rubicon ProjectRubicon Project is an advertising automation platform enabling publishers to transact advertising brands.
Analytics
Appsflyer
Websites built with AppsflyerAppsFlyer is a SaaS mobile marketing analytics and attribution platform.
Branch
Websites built with BranchBranch is a mobile deep linking system to increase engagement and retention.
Version: 2.57.1
Braze
Websites built with BrazeBraze is a customer engagement platform that delivers messaging experiences across push, email, in-product, and more.
Version: 5.1
Google Analytics
Websites built with Google AnalyticsGoogle Analytics is a free web analytics service that tracks and reports website traffic.
CDN
Cloudflare
Websites built with CloudflareCloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.
Reverse proxies
Envoy
Websites built with EnvoyEnvoy is an open-source edge and service proxy, designed for cloud-native applications.
Web frameworks
Express
Websites built with ExpressExpress is a web application framework for Node.js, released as free and open-source software under the MIT License. It is designed for building web applications and APIs.
Databases
Firebase
Websites built with FirebaseFirebase is a Google-backed application development software that enables developers to develop iOS, Android and Web apps.
Authentication
Google Sign-in
Websites built with Google Sign-inGoogle Sign-In is a secure authentication system that reduces the burden of login for users, by enabling them to sign in with their Google account.
Tag managers
Google Tag Manager
Websites built with Google Tag ManagerGoogle Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
Security
HSTS
Websites built with HSTSHTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
JavaScript frameworks
JSS
Websites built with JSSJSS is an authoring tool for CSS which allows you to use JavaScript to describe styles in a declarative, conflict-free and reusable way.
React
Websites built with ReactReact is an open-source JavaScript library for building user interfaces or UI components.
UI frameworks
MUI
Websites built with MUIMUI(formerly Material UI) is a simple and customisable component library to build faster, beautiful, and more accessible React applications.
Programming languages
Node.js
Websites built with Node.jsNode.js is an open-source, cross-platform, JavaScript runtime environment that executes JavaScript code outside a web browser.
Miscellaneous
Open Graph
Websites built with Open GraphOpen Graph is a protocol that is used to integrate any web page into the social graph.

Instantly connect with local buyers and sellers on OfferUp! Buy and sell everything from cars and trucks, electronics, furniture, and more.