Release Notes


  • Fixes for regression issues introduced in 1.8.0


  • Optimized file browing.
  • User interface improvements.


  • Improve address discovery when connecting to servers over firewalls or NAT.



  • New simplified user interface. Navigation tabs have been replaced by application and right-click context menus.
  • Use Control,⌘ + ←, Control,⌘ + → to quickly toggle between Transfer Manager and the Send & Receive pages.
  • Alternatively, use the application menus Transfer ‣ Transfers, and Transfer ‣ Send & Receive.
  • The Jetstream logo at the top-left of the window now serves as a home button. Click it to return to the Send & Receive page.
  • The Send & Receive view now contains quick transfer summary on the bottom. Clicking on it brings you to the Transfer Manager page.
  • Clicking on the Application Icon now pops up a quick view of list of ongoing tranfers. Use the Application Icon Menu to control the transfers.
  • A summary tool-tip has been added to the progress bar of the Transfer Manager. This is also available from the Application Icon.
  • Added support for handling jetstream:// natively, for example when sharing files. Clicking on the link from an email, or a browser, will open the client automatically, and initiate the link download dialog.




  • New Troubleshooting section in Application Settings. This can be used to enable server logs, and to isolate performance bottlenecks.
  • Improved graphing with new charts and improved visualization. See: Transfer Graphs.
  • The Location Tester now has more detailed system information, and the tests perform actual transfers to ensure they work. Previously, address discovery was used as a proxy for uploading and downloading.
  • Bug fixes.


  • Ability to transfer files between two remote servers. Previously, it was required that one end was client’s local server. See this note for details.
  • New “two panel” Send & Receive interface with dual file browsers.
  • To begin a transfer, drop one or more files from one file browser to another. Or, drop from the local file system (Finder, Explorer, etc.) to a file browser connected to a remote server.
  • “Start transfer immediately” available from the Transfer Preview window and Settings Editor. Transfer will begin immediately after a file is dropped into the left or right file browser.
    • This setting can be overriden with modifier keys. Shift + drop: Show Transfer Preview. Control,⌘ + drop: Start transfer immediately.
  • File browsers now feature a right-click Context Menu, with keyboard shortcuts.
  • Ability to rename and delete files and folders on a server.
  • Forward and back buttons for the file navigation breadcrumbs. Also available from the right-click Context Menu.
  • Sharable link creation moved to the Context Menu.
  • Locations automatically attempt to connect when they are selected. Clicking on the connect button is generally no longer required.
  • Ability to disconnect from a location (Send & Receive Location selector → Disconnect).
  • The file browser for a location will automatically refresh after a transfer to that Location completes.
  • The Settings Editor and Location Editor have been redesigned to work better on lower resolution displays. They feature a single-column scollable layout of options. The windows can now be moved and resized.
  • Keyboard shortcuts to delete transfers and sharable links.
  • Added context menus to the Transfer Details pane (including the performance graph) to copy CSV data to the clipboard.
  • Improved UPnP and NAT-PMP NAT traversal support. Requires Router NAT Traversal to be enabled.


  • Improved crash reporting in Windows
  • Improved accuracy in reported transfer statistics and charts
  • Display warnings when large enough socket buffers can’t be allocated


  • Added the Connection Console for troubleshooting connections
  • Added option to enable analytics in the application
  • Selecting a Windows drive in the file browser on a non-Windows application no longer causes an error
  • E-mails without credentials now work.
  • NAT traversal no longer fails when UDP port is set in application


  • The application is much better at handling network connection disruptions.
  • Responsiveness when working with directories containing a large number of files is improved.
  • Desktop notifications are presented when a transfer finishes.
  • Added a connection tester. This can be used to verify Location settings, and Shared Link downloads. To use, click the “Test Connection” link from the Location editor, or Download Link dialog.
  • “Open” button added to the Transfers Monitor. This will open a file browser (Finder, Explorer, etc.) where files were downloaded.
  • “Cancel” button added to the transfers “…” menu. This will stop an in-progress transfer and place it into an error state.
  • When an active transfer does not have any network activity for over a minute, it will be placed into a “not responding” state, and the progress indicator will turn blue.
  • When a transfer is suspended, the application will periodically ping the remote server to prevent a firewall from dropping the idle connection.
  • In the Transfers Monitor, the transfer start time now shows seconds.
  • Added “duplicate location” button.
  • The Locations list now supports multiple selections.
  • A username with a blank password is now accepted by the Location editor.
  • Shared Links message body is now copied into the clipboard with HTML and plain text versions. Pasting into an HTML-compatible email client will result in improved formatting.
  • The “Download Link” button has been renamed to “Get Shared Files”.
  • Multi-monitor layout fixes.


  • Added links sharing feature.
  • Added welcome page.
  • Added Settings and Locations import and export.
  • Added ability for superusers (see server documentation) to view all transfers on the server.
  • An error message will be displayed if an attempt to monitor a location fails due to connection issues. Previously, it would fail silently.
  • /Users/user name/Downloads is now the default downloads folder. Previously, it was the root of the file system.
  • Fixed an issue where tool-tip documentation would be cut off in some cases.
  • Fixed an issue where attempting to quit the application with a keyboard shortcut would fail.


  • Fixed an issue where switching to the Current Location could display stale contents in the accompanying browser.
  • Fixed an issue where quickly clicking the Send button repeatedly could cause the application to crash.
  • Added a New Folder button to the Destination file browser.
  • Added a Refresh Current Location button to allow a manual refresh of the content shown in the Current Location browser.
  • Added navigation breadcrumbs to the Current Location and Destination browsers.
  • Changed the default Maximum Send Rate to 50Mbit/second. This change affects only new Locations; existing Locations will preserve the current value for this setting.
  • Transfers are now started asynchronously, allowing the application to remain responsive while the required server negotiations are completed. This constitutes some changes to the behavior of the Send button:
    • Once a transfer is initiated, the Send button switches its label to Working.
    • While a transfer is being negotiated, the Send button (showing Working) remains unavailable until the transfer has been successfully started, or the negotiation fails. Preparing a new manifest, either on the same server or a different server, does not enable the Send button. This is because the application is only capable of tracking a single transfer negotiation at a time.
    • Once a transfer negotiation is completed, successful or not, the Send button is immediately made active again, provided a valid server connection and manifest is available. This differs from the previous behavior, where the Send button remained dimmed until the server connection or manifest was changed.


  • Fix an issue on Windows where incorrect file sizes would be reported
  • Improve NAT traversal


  • Windows 7 support
  • NAT Traversal functionality added for routers with UPNP and NAT-PMP support


  • First release