PUBLIC MARKS from Spone with tag synchronisation

Wordmove is a gem that lets you automatically mirror local Wordpress installations and DB data back and forth from your local development machine to the remote staging server. SSH connections are fully supported, while FTP support is planned to be discontinued when new features will be introduced. Think of it like Capistrano for Wordpress, complete with push/pull capabilities.

localForage is a handy library that improves the offline experience of your web app by using asynchronous storage (via IndexedDB or WebSQL where available) but with a simple, localStorage-like API. localForage includes a localStorage-backed fallback store for browsers with no IndexedDB or WebSQL support. This means that asynchronous storage is available in Chrome, Firefox, and Safari (including Safari Mobile).

Camlistore is a way to store, sync, share, model and back up content

Syncany is an open-source cloud storage and filesharing application. It allows users to backup and share certain folders of their workstations using any kind of storage, e.g. FTP, Amazon S3 or Google Storage.

Simplify software connects you directly to your media Enjoy all your music and photos while away from home. Explore media from friends and family while they are online.

imapsync - IMAP synchronisation, sync, copy or migration tool. Synchronise mailboxes between two imap servers. Good at IMAP migration.