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Files and cloud storage

ELX-Cloud

A file cloud on a server you control

A browser interface with drag and drop, sharing by link and between users, and the same files over FTP, FTPS and WebDAV. Photos, video and music play in place, text files are edited in the browser, and everything lives in one SQLite file next to the binary.

v1.0.0 WindowsLinux Free
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One binary, one database

No web server to configure, no database to install, no image library to compile. The interface and the assets are inside the executable and the state is a single SQLite file, so backing the whole system up means copying two things.

Photographs open instantly

Thumbnails are prepared in the background and cached on disk, so a folder with thousands of pictures opens as quickly as an empty one. Background work always leaves one core free for the interface.

Three ways to the same files

The browser, FTP and FTPS, and WebDAV as a network drive — the same credentials, the same permissions, the same quotas and the same trash for all three.

Locks that are not the login password

Any folder or file can carry its own password, either hiding it completely or merely preventing changes. Protection follows the folder when it is renamed and applies to everything inside it.

Links you can limit

A public link can have a password, an expiry date and a download counter, and can accept uploads from guests. Every link you have issued is listed in your profile with one button to revoke it.

An Android client

Files, favourites, links, trash and automatic photo upload from the phone. Administration deliberately stays in the browser.

Working with files

  • Drag and drop uploads, whole folders included — the structure is preserved.
  • Three views: a table, small tiles, and large tiles with photo thumbnails.
  • Photographs open in a window, expand to full screen on a double click, and the arrow keys page through the folder.
  • Video and music play in place — seeking, volume, full screen and download in the same window, and playback stops when you close it.
  • Text files and source code open with syntax highlighting, a choice of encodings, editing and save on Ctrl+S.
  • The right mouse button opens a context menu, and the usual keys work: Ctrl+C, Ctrl+X, Ctrl+V, F2, Del, Ctrl+A.
  • Folders download as ZIP; search covers names across the archive.
  • Favourites collect the folders you return to, at any depth.
A file nothing can openA document, an archive or an installer shows a card with its type, size, date and sharing state, with buttons to download or share. A stray click no longer starts a download you did not want.

Converting on the server

HEIC and PNG images convert to JPEG, and AVI and MOV video to MP4. Select the files, choose Convert, set the quality and decide whether the originals go to the trash.

The format is detected by looking inside the file rather than at its extension: a photograph named .heic that already contains JPEG is simply renamed, because re-encoding it would lose quality for nothing.

How many at onceOne by default. Video conversion is the heaviest thing this server does, and a queue that saturates the machine makes the interface feel broken for everybody else.

Sharing

WayWhat the recipient gets
Public linkA page with the file or folder; optionally behind a password, with an expiry date and a download count
Link that accepts filesThe same page, with the ability to upload — useful for collecting material from somebody without an account
To another user, read onlyThe folder appears in their “Shared with me”, and under /shared over FTP
To another user, read and writeThe same, with the ability to change what is there

FTP, FTPS and WebDAV

The same account works over all three. FTPS uses the web interface's own certificate — including a Let's Encrypt one — so clients connect without warnings. Passive mode has a configurable port range, and quotas and permissions apply exactly as they do in the browser.

WebDAV mounts the storage as a network drive at /webdav. It is switched off by default: not everybody needs it, and an unused open path to the files is a risk with no benefit.

WebDAV over HTTPS onlyThe protocol sends the password with every request. Over plain HTTP that means sending it hundreds of times a day in the clear.

Folders that already exist on the server

An archive that lives elsewhere on the machine does not have to be moved into the storage. The administrator attaches the folder by path, decides who sees it and whether it is read-only, and everything ordinary works inside it: viewing, uploading, renaming, search and public links.

  • By default an attached folder is visible only to the person attaching it — an accidental “all users” would expose somebody else's archive.
  • Deletions go to a trash inside the attached folder itself, so nothing is copied across disks to be deleted.
  • Space in an attached folder does not count against quotas.
  • System directories cannot be attached, and paths inside an attachment cannot escape it.
  • Permissions are checked by trying, not by guessing: the service reads and writes a test entry, and grants itself access to that folder alone if it is missing.

Security

  • Failed attempts are counted across the web interface, FTP and WebDAV together, because an attacker does not care which door is which.
  • The threshold is zero — disabled — out of the box: a mechanism able to lock the owner out is one you switch on deliberately, after putting your own network on the allow list.
  • The allow list wins over the block list, and addresses on the local network are never blocked automatically under any setting.
  • The login log records who, from where, when and how it ended; failures are always recorded, successes optionally.
  • Locating an address by country is possible but off by default, because doing it means sending that address to somebody else's service.
Accounts come from the administratorThere is no public registration, by design. The administrator creates accounts, sets quotas, enables or disables FTP for each one and can block an account without deleting it.

At a glance

Protocols
HTTP and HTTPS, FTP and FTPS, WebDAV
Operating systems
Debian, Ubuntu, Windows
Storage
Files on disk, metadata in SQLite
Certificates
Let's Encrypt, your own files, or self-signed
Optional tools
ffmpeg for video, heif-convert for HEIC
Memory ceiling
Configurable, 768 MB by default
Mobile client
Android
Public registration
None — accounts are created by the administrator

Frequently asked questions

Does it need a web server or a database?
No. It serves HTTPS itself and keeps its metadata in SQLite. It works behind a reverse proxy if you already have one, but does not require it.
Where do the files actually live?
On disk, in ordinary folders, under the storage directory you choose. If the program disappeared tomorrow, the files would still be readable with a file manager.
Can users register themselves?
No, and that is deliberate. The administrator creates accounts. A file server with open registration is a file server that fills with strangers.
What happens to deleted files?
They go to the trash and can be restored to their previous place in one click. The retention period is configurable, and the trash can be switched off entirely if you prefer deletion to be final.
Is there a size limit for uploads?
One you set. Uploads resume after a broken connection rather than starting again, which matters more than the limit for large files.
Can I use it with an existing archive on the server?
Yes — attach the folder instead of moving it. Everything works inside it, and the space is not counted against quotas.

ELX-Cloud

A file cloud on a server you control

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ELX-Cloud for Android Your file cloud in your pocket v1.0.0