(also known as Adobe Flash Player Standalone) lack the "time bomb" present in the newer plug-in variants, and thus continue to be able to play all supported Flash file formats, including SWF files, without modification. Content preservation projects The Internet Archive hosts some Flash content and makes it playable in modern browsers via emulators, Ruffle and Emularity. Other emulators, such as CheerpX, also exist as options for Flash Player emulation on other websites. BlueMaxima's Flashpoint project claims to have collected more than 38,000 Adobe Flash Player games and animations and made them available for download. Open source Adobe has released some components of Adobe Flash products as open source software via Open Screen Project or donated them to open source organizations. As of 2021, most of these technologies are considered obsolete. This includes: ActionScript Virtual Machine 2 (AVM2) which implements ActionScript 3 (donated as open-source to Mozilla Foundation), Adobe Flex Framework (donated as open-source to the Apache Software Foundation and rebranded as Apache Flex, superseded by Apache Royale), CrossBridge C++ cross-compilation toolset (released on GitHub). Criticism Accessibility and usability In some browsers, prior Flash versions have had to be uninstalled before an updated version could be installed. However, as of version 11.2 for Windows, there are now automatic updater options. Linux is partially supported, as Adobe is cooperating with Google to implement it via Chrome web browser on all Linux platforms. Mixing Flash applications with HTML leads to inconsistent input handling leading to poor user experience with the site (keyboard and mouse not working as they would in an HTML-only document). Privacy Flash Player supports persistent local storage of data (also referred to as Local Shared Objects), which can be used similarly to HTTP cookies or Web Storage in web applications. Local storage in Flash Player allows websites to store non-executable data on a user's computer, such as authentication information, game high scores or web browser games, server-based session identifiers, site preferences, saved work, or temporary files. Flash Player will only allow content originating from exactly the same website domain to access data saved in local storage. Because local storage can be used to save information on a computer that is later retrieved by the same site, a site can use it to gather user statistics, similar to how HTTP cookies and Web Storage can be used. With such technologies, the possibility of building a profile based on user statistics