Seafile Professional Server 6.3 is ready for testing! Major new group functions

Following the release of the beta version of the Community Server 6.3 on May 26, we are pleased to release the Seafile Professional Server 6.3 for testing today. The production version is slated for the end of July.

The redefinition of the role of groups in Seafile is the most notable change in version 6.3. Group-owned libraries and the nesting of groups are completely new features. The support of multiple storage backends and the persistence of public links are two more major improvements introduced in version 6.3. More details about these and the many other improvements are coming up in the rest of this announcement.

Redefined groups: Group-owned libraries & group nesting

Through version 6.2, the ownership of libraries was limited to users. Reacting to feedback from user base, this changes in the current release! Beginning with version 6.3, ownership of a library can lie with a user or with a group. Additionally, groups can be assigned quotas and they can have sub-groups. With this change, we aim to facilitate file and storage management in larger organizations with frequent group entries and exits. Here is just one example of where we think group-owned libraries will be of help: If a user leaves a group, no more libraries must be transferred from this user to another.

Groups able to own libraries are called departments, their sub-groups sub-departments. All libraries created in a department by a department administrator belong to this department and can be accessed by all department members – either with read-only or read-write permission. Of course, commonly-owned libraries can be shared to other groups and users outside the department.

图片 1

Departments can be created and managed via the admin panel (see figure). An unlimited number of admins and users can be named as members. In a future release, we will add the ability to transfer ownership from a user to a department.

More storage options: Support for multiple storage backends

With Seafile Professional 6.3, different local storage backends (e.g., local disk and Ceph storage) can be combined and used together for one Seafile server instance. To use this feature, all data need to be sent to the Seafile server which then determines where to store the data based on the individual configuration.

Besides increasing general storage flexibility, multiple storage backend support also opens up new application areas for Seafile. In one implementation scenario, which we deem attractive, fast disk storage is operated side-by-side with slow, high-density optical storage. When a new library is created, the user chooses whether to make the library hot access and to store the library in the disk array or on the optical storage for long-term archiving.

Reliable URL-file access: Persistent public links

Did you know: A sharing link was rendered unusable when the file or its folder was moved or renamed? We did know and we did not like it! This is why Seafile Professional 6.3 does away with it!

Beginning with version 6.3, public links are persistent and immune to file transactions such as renaming or moving. Public links also stay intact when library ownership changes. Only deleting a library, this you can’t do without harming the public link.

Faster document previews: PDF and office file preview with pdf.js

Good news for all those that use Seahub without Collabora or OnlyOffice integration: Seafile’s built-in document file preview is a great deal faster now. Instead of rendering office documents in HTML, they are converted into PDF format and displayed as such. pdf.js, which Seafile uses for that purpose, has also been updated.

New markdown editor and updates: Shared improvements with the Seafile Community Server

Seafile Professional Server 6.3 inherits all improvements and updates that the earlier released Seafile Community Server 6.3 features – for which a production version was made available since the beginning of the week. Below a summary of the three most important shared improvements.

WYSIWYG Markdown editor

Seafile Community Server 6.3 introduces a brand new, Seafile-made WYSIWYG markdown editor. The new editor provides two important features so far missing from (almost all) other markdown editors: WYSIWYG table-editing and image inserting.

It replaces the old non-WYSIWIG editor which – unfit for extensions – proved to have reached the end of its lifetime.

A new table is added by clicking on the table icon in the menu bar. Rows and columns can be added/removed and alignment changed quickly by means of context-sensitive menu buttons (see figure).

图片 2

Images can be inserted by simply dragging&dropping the files form the file manager into the editor, through the clipboard or the image icon in the menu bar. Similarly, links to other files in the same library can also be easily added by drag and drop. Another boon of the new editor: It supports markdown shortcuts. For example, * + space at the beginning of a line inserts a list.

WYSIWYG is enabled in the Rich Text Editor. The lovers of MD code’s clarity can switch to the Plain Text Editor by clicking on the three dots button.

Django and jQuery Update

Django 1.8, which was used since Seafile version 5.1, was deprecated in April 2018. Both Seafile Server editions have now been updated to Django 1.11. The long-term support of Django 1.11 runs until mid-2020. As a consequence of the upgrade, the FastCGI mode is no longer supported. Seafile behind Nginx/Apache must be configured in WSGI mode as of now.

jQuery was also updated to version 3.3.1

Minor Seahub redesign

Version 6.3 introduces a slight modification of Seahub’s navigation bar. In an attempt to make the positioning of the action buttons more consistent across pages, the buttons moved to the top bar (see figure).

图片 3.png


For more details on the Seafile Community Server 6.3, see the corresponding release statement (


  • Support nested group and group-owned libraries
  • Update Django to version 1.11, remove FastCGI support
  • Update jQuery to version 3.3.1
  • Update pdf.js to version 1.19, use pdf.js for preview pdf files
  • Docx files are converted to PDFs and preview via pdf.js in built-in preview
  • [fix] Fix some bugs with OnlyOffice and CollaboraOffice
  • [fix] Use mobile version of OnlyOffice if viewed via mobile devices
  • Shared sub-folders can be searched
  • Show terms and condition link if terms and condition is enabled
  • Remove login log after delete a user
  • [admin] Support customizable site title, site name, CSS via Web UI
  • [fix] Fix a bug that causing seaf-fsck crash
  • [fix] Cancel Zip download task at the server side when user close zip download dialog
  • [fix] Fix crash when seaf-fsck, seaf-gc receive wrong arguments
  • [fix] Fix a few bugs in realtime backup server
  • [beta] Wiki, users can create public wikis
  • Some other UI improvements.

Seafile Pro edition 6.2 is ready

In this release, we continue our effort to improve the user interface of Seafile web and offer features to make organizing files easy and intuitive.

There are three major new features:

1. The login page is redesigned, adding a background image.

2. A statistics module is added. Now you can find report charts for daily active users, daily file operations, and used space

This feature is turned off by default, you need to turn on it by adding the following config to seafevents.conf.

## must be "true" to enable statistics
enabled = true

3. “Admin” permmision when sharing a library to another user/group

Other changes include:

  • Add the ability of tagging a snapshot of a library (Use ENABLE_REPO_SNAPSHOT_LABEL = True to turn the feature on)
  • Add a field Reference ID to support changing users primary ID in Shibboleth or LDAP
  • [Admin] Add an option to enable users to share a library to any groups in the system.
  • Use WSGI as the default mode for deploying Seahub.
  • Use multi-threads in search indexing
  • Support adding a custom user search function (
  • Clean the list of languages
  • Improved performance of loading library list
  • [improve] Improve performance of file history page.
  • [improve] Show two file history records at least.
  • Support OAuth.
  • Support Swift v1 protocol.
  • Enable publish library update events to message queue (like Redis)
  • Other small UI improvements

Enjoy the new version!

How to use Seafile library snapshot to protect your data from Ransomware

A few weeks ago, a new ransomware named “WannaCry” attacked a lot of computers around the world. The ransomware encrypts all the data in affected computer and asks for ransom with BitCoin for “decrypting” the data. However, security experts warn that even if users transfer the ransom, it’s still not possible to recover the data.

This kind of ransomware appears from now and then. It never stops threatening people’s data. “WannaCry” got people to know that how vulnerable their data is. The only valid defense against ransomware is an up-to-date backup of your precious data. Since backup is something Seafile is very good at, we’d like to share how to use one of Seafile’s special feature — library snapshot to easily recover your data.

How does Seafile Protect Your Data

First of all, Seafile cannot help you to decrypt the data encrypted by ransomeware. Whenever you change or add a file inside a synced library, Seafile automatically creates a new version on the server. The old versions of a file is still kept in library history. From Seafile’s point of view, when the ransomeware encrypts a file, it just creates a new version of that file. So you can still find the original version on the server.

File history is a pretty standard feature of all file sync and share products. However, Seafile goes one step further to help you recover all of your encrypted data very easily. Seafile creates a snapshot of the entire library whenever any change is applied to the library. Users can look into any snapshot in the history and restore the entire library to the status of that snapshot, in just one click. Simply put, every library has a “time machine” built into it. With other cloud storage products, you have to either recover the files one by one, or write a script to recover the files in batch. Dropbox does provide a similar service, but users have to contact support manually to ask for recovery.

How to Restore to a Snapshot

In Seafile web interface, navigate into a library. You can find a small “clock” icon on the top-right position of the file list. You can click that icon to view library’s history.


Hover your mouse over any change record in the history page. You’ll see the “view snapshot” link.


Click that link, you’ll see the status of the library after that change was applied.


To the top-right of the file list, you can find a “Restore” button. Clicking that button will restore the entire library to this snapshot state.

That’s it! You defeat ransomeware within a minute. Enjoy!

Seafile Drive Client 0.6 is available now!

We’re excited to announce the release of Drive client 0.6 version. In this version we added two long awaited improvements: file and folder sync status overlay icons; and sync error notifications. Some syncing bugs are also fixed to make this version more reliable.

You can see the overlay icons in Windows file explorer as in the screenshot below.


A file or folder can be in a few states:

  • Cloud-only (with a “cloud” icon): files or folders not downloaded to local computer yet. Only file name, size and last modification date are available.
  • Synced (white tick with green background): Files or folders are completely synced to local computer. You can access them when offline.
  • Partially synced (green tick with white background): Only appears on folders. This means some files or folders inside the folder are downloaded.
  • Syncing: files or folders are being uploaded or downloaded.

A problem in the previous versions of SeaDrive is that there is no way for the users to know whether there is an error in syncing. In this new version, errors are communicated to the users in a few ways:

  • Whenever a sync or network error is detected, a disclaimer (“!”) will be displayed on the system tray icon.
  • When the client detects the server is disconnected, a notification will be popped up.
  • When the client encounters an error in syncing, a notification will be popped up. And you the users can see all sync errors by right clicking the system tray icon and choose “view file sync errors”.

We hope you like this new version. Feedbacks are welcomed!

Seafile Adds Co-authoring to Office Online and Collabora Online Integration

The latest Seafile Pro Edition (6.0.6) adds real-time co-authoring to its integration with Microsoft Office Online Server and Collabora Online. This ability will greatly boost collaboration productivity for teams.

With real-time co-authoring, two or more users can edit a document at the same time and see each other’s changes while they’re typing. You can see the cursor location where someone is working and what they’re typing as they type, just as if they are working on your computer or device. You can hover over the cursor location and see who is making the changes.

Co-authoring  supports most modern document formats:.docx, .pptx, and .xlsx.

Integration of Collabora Online:

Co-authoring is only supported in Collabora Online 2.0. Here are some samples for co-authoring on different document types.

Docx file:






Integration of Office Online:

Co-authoring is only supported in Office Online Server 2016.

Docx file:






Welcome five educational institutions joining Seafile community

We are happy to announce that in the last quarter five educational institutions joined Seafile community, including Max Plank Society (MPS) in Germany, Poznan Supercomputing and Networking Center (PSNC) in Poland, University Hannover in Germany, Institute of Informatics at the University of Zurich in Switzerland, St. Paul’s Hospital of University of British Columbia in Canada.

We are working with Max Plank Digital Library (MPDL) on the Keeper project. The Keeper project is for the exchange, storage and long-term archiving of research data. Researchers at the Max Planck Society (MPS) are required to comply with the “Rules of Good Scientific Practice” adopted by the Senate of the MPS, which include guidelines for long-term archiving of primary data for at least 10 years. The syncing performance, reliability and support for large files is critical to the success of the project. MPDL chose Seafile after throughout testing for about a year. Seafile’s high reliability and the ability to sync very large file (even 1TB in size) makes it a very satisfying solution for them.

We are also working with Poznan Supercomputing and Networking Center (PSNC) to provide a file syncing and sharing service to universities and schools in Poland. Initially, the service will introduced to a few selected universities. After the pilot, the service will be introduced to more universities. PSNC have been using Seafile community edition for almost 2 years. They compared multiple products and find Seafile the most reliable and performant. “Users want the ‘Dropbox’ equivalent, not something else.” says Maciej Brzezniak, storage management team leader from PSNC, “Users appreciate Seafile’s performance and reliability in file syncing.”

St. Paul’s Hospital of University of British Columbia uses another product for internal file sharing and collaboration for a few years. After switching to Seafile, they find the reliability and performance of the service are much improved.

We’re looking forward to bigger developments for Seafile in educational communities in the year of 2017!

Drive client for Windows is now ready for production use

We’re glad to announce that Seafile Drive client for Windows is now ready for production use. Since the initial beta release in September, the Drive client has evolved rapidly. Thanks to the feedback from our community, many issues in the beta version have been fixed in the last two months. Now the Drive client is stable enough to be used by general users. You can download it from our website. User manual is available too.

The Drive client is a new way to map your Seafile storage as a virtual drive on your computer. You can access all your files in Seafile without syncing them. We believe it’s a more intuitive way to use cloud storage. For more information about the Drive client, you may read our previous post.

There are still a few milestones ahead for the future releases:

  • File locking support
  • File upload/download progress
  • Encrypted library support
  • Keep selected folders always in sync
  • Auto update of the client

We’re also working on Linux and Mac version of the Drive client. They’ll be available soon.

Seafile pro edition 6.0 is ready!

After Seafile pro edition 6.0 runs smoothly for several weeks on our servers (,, we are glad to announce that it is ready for production use!

Quite a few important new features are added in pro edition 6.0:

  • A full screen adaptive Web UI
  • Collabora Online (LibreOffice Online) integration
  • Role based permission control
  • Two-factor authentication
  • Remote wipe

Full screen adaptive Web UI

If you have a wide screen, the new full screen can take the advantage to show more contents in a line. If you have a narrow screen, the new interface can also adapt to it.


The navigation label is also changed according to feedbacks from users:

  • Mine -> My Libraries
  • Shared -> Shared with me
  • Organization -> Shared with all
  • Groups -> Shared with groups
  • Starred -> Favorites
  • Devices -> Linked Devices

Collabora Online (LibreOffice Online) integration

Collabora Online is LibreOffice-based online office suite that supports all major document, spreadsheet and presentation file formats, created by Collabora. It is an open source Office 365 alternative and works on all major browsers including those on mobiles.

The Collabora Online integration is finally ready. Now you can edit Microsoft Office files and LibreOffice Office files online in Seafile. Here is a screenshot:

Role based permission control

With this feature, you can define roles and assign a role to a user. This make permission/feature control more flexible.

As an example, you can define a new role “employee” to have all the feature enabled:

   'employee': {
        'can_add_repo': True,
        'can_add_group': True,
        'can_view_org': True,
        'can_use_global_address_book': True,
        'can_generate_share_link': True,
        'can_generate_upload_link': True,
        'can_invite_guest': True,
        'can_connect_with_android_clients': True,
        'can_connect_with_ios_clients': True,
        'can_connect_with_desktop_clients': True,

You can define a “guest” role as:

   'guest': {
        'can_add_repo': False,
        'can_add_group': False,
        'can_view_org': False,
        'can_use_global_address_book': False,
        'can_generate_share_link': False,
        'can_generate_upload_link': False,
        'can_invite_guest': False,
        'can_connect_with_android_clients': False,
        'can_connect_with_ios_clients': False,
        'can_connect_with_desktop_clients': False,

So the guest can’t create his/her own libraries and groups. He/She can’t use desktop/mobile clients too.

Two-factor authentication

This is a quite common feature nowadays and it comes to Seafile now. Seafile supports Google Authentication and text message currently.

After the admin enables this feature globally, a user can turn it on via the settings page.

After setup, the next time when the user login via Web UI or desktop/mobile clients, a dialog will popup and ask for the authentication code:

More information can be found in Seafile manual.

Remote wipe

Enterprises usually have demanding requirements on data security. Losing a laptop computer, even though not an often case, is a threat to data security. With remote wipe, files synced to a computer can be wiped after it’s lost.

A user can unlink a device via the web interface. When unlink a desktop client, he/she will be asked an option to whether wipe the data on that desktop client. If the answer is yes, the data on that client will be deleted when the client connects the server. Desktop client version 6.0 is needed to use this feature.

For mobile clients, the data is wiped by default when the device is unlinked.

Other pro features improvements

Other features in pro edition are also improved:

  • Improve zip downloading by adding zip progress
  • [Anti-virus] Support parallel scan
  • [Anti-virus] Add option to only scan a file with size less than xx MB
  • [Anti-virus] Add option to specific which file types to scan
  • [Anti-virus] Add scanning virus instantly when user upload files via upload link
  • [online preivew] Add printing style for doc/pdf
  • [online preivew] Warn user if online preview only show 50 pages for doc/pdf with more than 50 pages
  • [fix] Fix search only work on the first page of search result pages

Formation of Seafile Educational Community

Educational institutes are among the biggest customers of Seafile. From file syncing to sharing, from collaboration to long-term data retention, Seafile helps educational institutes to solve many important use cases. Users from educational institutes also actively participate in the Seafile user community, providing valuable feedback and suggestions to our road map. With outstanding reliability and performance, Seafile has become a leading file sync and share solution for educational institutes.

From Sep. 26th to Sep.29th, founders and developers of Seafile Ltd. met with Seafile users from educational institutes in Europe. It was a fruitful trip and we have a lot exciting news to share. The most exciting one is the formation of Seafile educational community.

The meeting was held in Homboldt University of Berlin. Administrators/researchers from other universities and research institutes attended the meeting, including University of Mainz, University of Strasbourg, University of Hannover and PSNC of Poland. Users and Seafile developers actively exchanged ideas about Seafile’s features and development. We received many good inputs into our development road map. Seafile developers presented an outlook to the development of the next year, especially the up-coming Seafile Drive client. People showed a lot of interest to new features.

At the end of the meeting, educational users and the developers all agreed to further advocate the growth of Seafile educational community. The efforts will be lead by Homboldt University of Berlin and University of Mainz. A dedicated educational community forum ( was set up and maintained by Homboldt University of Berlin. This will become a communication platform for all Seafile educational users to share ideas and coordinate events. More and more institutes will be joining this community. If you’re interested in joining the forum, please contact us via

After the meeting, Seafile developers went on to Munich to meet people from Max Planck Digital Library. We also met with some business partners in Germany. We’ll have more interesting news in the near future.

Welcome to the new Seafile educational community!

Announcing Seafile Drive client, a new way to map Seafile storage as virtual drive

We’re proud to announce an exciting new way to access all your files in Seafile — the Drive client. The Drive client maps your storage space on Seafile server as a virtual drive on your computer. It allows you to access all your files in Seafile immediately, without syncing them. Conceptually, the Drive client extends your local disk space with the massive storage capacity on your Seafile server.

Since the beginning of Seafile project, file syncing has been one of  the most valuable features. However, there are still some limitation with the sync client:

  • The users have to manually initiate syncing of libraries. Even though this allows the users to selectively sync what they’re interested in, it’s not the most intuitive way to use cloud storage. Many users are more used to “Windows share”. Accessing cloud storage in the same way as Windows network drive is most intuitive for many users.
  • The amount of file you can sync is limited by the client computer’s disk capacity. If you have huge amount of files on your server (true for large organizations),  it’s not possible to access them all on your client computer.

How it works

After installation and setting up up your Seafile account, a virtual drive will appear in your Windows explorer (labeled as ‘S:’ and named ‘SeaDrive’). You can also choose a different drive letter. The Drive client then fetches the file list from Seafile server and cache them on your local disk. No file contents are downloaded so it would finish quickly. Then you can see all your libraries and files inside the ‘S:’ drive. You could open/edit any files. File contents will be downloaded on demand. That’s it!


But wait, does it just work like Windows share or WebDAV? No, the Drive client works differently.

  • Supports offline mode. You can still access the folders and cached files even there is no network connections. Your changes will be uploaded to the server after network is accessible again.
  • No network delay when you browse folders, as file list are loaded during initialization and synced periodically.
  • No network delay when you move, delete or create new file or folders. Metadata changes are first written to local cache then synced with the server in the background.
  • No network delay when you update files, even large files. Files are first written to local cache and uploaded to the server in the background.
  • Reading files works like “streaming”. You read file contents as the contents are being downloaded from the server. This reduce the delay of opening files.

Windows share doesn’t have offline mode and doesn’t work well in WAN environment. Mapping WebDAV server as local drive is usually slow, because the OS sees it as local disk and sends many redundant requests to the server.

There could be many use cases for the Drive client:

  • Replace Windows Share (SMB) or Samba with Seafile.
  • Access files on workstations with small local disk.
  • Writing large scientific data directly to Seafile server.
  • Better enforcement of company data access regulations. Users access files from Seafile server exclusively. The locally cached files can be removed on logout. In the future we’ll implement encryption for the virtual drive. Companies don’t need to worry about data leak after computer lost.

Under the hood

The Drive client works like a sync client with a FUSE like virtual file system interface. The client still use the syncing protocol for upload/download files in the background. But it also implements some “smart” caching algorithm that fetches and caches local copy of files. Then it presents the files/folders to end users as a virtual file system.

On Windows, we use Dokany, an open source user-mode file system driver and library to implement virtual drive. On Mac and Linux, we’re going to use FUSE for the task.

Where can I get it?

The Drive client is currently in beta. You can download it from Seafile download page. Note that the Drive client requires Seafile server 6.0.

What’s next?

Currently there are sill some limitations on the beta version:

  1. Mac and Linux clients are under development.
  2. Encrypted libraries are not supported yet.
  3. File locking is not supported.
  4. Lack of an option to allow the user to keep some folders always synced to local disk.

We’re rapidly developing the Drive client, so you’ll see new version very soon. Below is our road map:


  • Mac and Linux client
  • File locking support
  • Translations
  • Polished UI


  • Encrypted libraries


  • Enable keeping a folder sync

Side Note: Compared to Dropbox’s “project Infinite”

While we were developing the Drive client, we saw the news that Dropbox is also going to release something similar, named project Infinite. But it raises many concerns because it will use its own “kernel extensions”, other than standard and open source mechanisms like FUSE. The concerns are about both privacy and security. A kernel extension will give Dropbox even deeper access to all information on your computer. Not using standard mechanisms also introduce potential security and stability concerns.

Unlike “project Infinite”, Seafile Drive client uses open source FUSE-like mechanism to implement virtual drive. And we believe that the Drive client will have even more use cases in private cloud environment, where the network is much faster than WAN.