SeaMonkey  2.1 Beta 1
- OpenSearch plugins are now supported and the default for web search.
- Data Manager now unifies cookie, permission, password, and form data management.
- Plugins now run in their own processes and don't take down the browser any more if they crash.
- The context menu of the location bar now has a "Paste and Go" option.
- The location bar now features a fast bookmarking button.
- Direct2D Hardware Acceleration is now on by default for Windows 7 users, hardware accelerated layers are available on all platforms with known-to-work video drivers.
- The HSTS security protocol and the proposed Audio Data API are available.