The Replit platform is expanding its capabilities to enable users to build almost anything in "replspace", a term coined by the platform team. The goal is to allow users to write services that accept file uploads or store data in local databases, regardless of how the repl was started. This change will improve collaboration and make it easier for newcomers to persist information. The platform uses Operational Transformation history logs and btrfs filesystem snapshots to save files, and has recently upgraded its Linux kernel to include features such as fanotify, which allows for efficient monitoring of whole filesystems. This upgrade enables repls to save new snapshots automatically when a file changes, regardless of the start method, and unlocks new capabilities for users. The platform is excited to see what users will build with these new capabilities, and is hiring if you want to help build the next big thing.