Apps similar to Sendwin include Firefox Multi-account Containers, which is free and open source. Other options are Temporary Containers, Session Box, Containerise and IE Session Manager. In total there are five Privacy Tools like Sendwin for the web, Windows and Mac.
Creates isolated containers for separate browsing sessions, preventing cross-site tracking and keeping multiple accounts signed in. Offers customizable colors, icons, privacy controls, and does not send any browsing data, supporting personal, work, and private browsing.
United States
Easily open disposable containers that isolate attached data and are deleted after usage: Fully automatic, based on navigation-target, for certain websites, with configured mouse clicks on links or just by using the toolbar icon.
Germany
EU
SessionBox One is the app that lets you use multiple accounts on the same site simultaneously without the fear of account banning.
HungaryEU
Firefox extension to automatically open websites in a container. Map multiple domains and subdomain to a container with simple CSV based config. Once mapped, this extension will always open the site in a container. This behavior is disabled in private mode.
IE Session Manager is an add-on for Internet Explorer 7, 8, 9, and 10 which saves, restores, and manages multiple Internet Explorer tab and instance sessions.
