SlackVault and Slackdump: Browser Extension or Command Line

SlackVault and SlackdumpAn open-source command-line tool that archives public and private Slack messages, threads, files and emojis to your computer without admin rights.Last checked November 7, 2026. Check Slackdump for yourselfSlackVault is not affiliated with or endorsed by Slack.Which one suits youChoose Slackdump if you are comfortable on the command line and want a free, local, scriptable archive with its own viewer, search and format converters, no browser extension or cloud account involved.Choose SlackVault if you want the archive to keep itself current in the background from a browser extension and to be readable by the whole team in a web app, without anyone running a terminal.What each one costs

SlackVault: Forever Free

Open source

$0 / one time

GNU Affero General Public License v3.0

Their page

Side by side

Saves public channel messages

Yes

Yes Their page

Saves private channel messages

Yes

Yes Their page

Saves direct messages and group DMs

Yes

Yes: private conversations Their page

Saves thread replies

Yes: A thread that fails to save is skipped, not retried

Yes Their page

Saves shared files

Yes: File details always; copies only at a public link on our storage, when switched on

Yes Their page

Runs on its own on a schedule

Yes: Every 15 minutes, while the browser runs

Not stated on the pages we checked

Copy lives in storage you control

Partly: Messages in your Firebase project; file copies are not in your storage

Yes: saved locally Their page

Search across the saved history

Yes: The most recent page of messages, up to 50 per query

Yes: search mode for messages and files Their page

Export to open file formats

Yes: JSON, CSV, HTML and Markdown

Yes: Slack Export, Mattermost mode, dump, SQLite or json+gz archive Their page

Works without workspace admin rights

Partly: No admin scopes, though a workspace can require approval for new apps

Yes Their page

Puts records back into Slack

No: No way yet to send records back into Slack

Not stated on the pages we checked

Free plan with no time limit

Yes

Yes Their page

What SlackVault does today, and what it does not

Messages, channels, members and file records go to your own Firebase project. Supabase is not supported yet.

Files do not go to your Google Drive or your Firebase project. When file copying is switched on in our extension build, each file uploads to our file storage with its visibility set to public: the link is hard to guess, but anyone holding it can open the file without signing in. Where no storage key is set in the build, no copy is made, and your archive keeps the file’s details and Slack’s link, which works only while Slack serves that file.

There is no way yet to send records back into Slack.

The sync runs in a browser extension, every 15 minutes, only while that browser is running.

SlackVault can copy only what Slack’s API still returns, so anything older than your plan’s window is out of reach unless an earlier sync already saved it.

If saving one thread fails, the sync logs it and moves on without retrying those replies.

Search checks the most recent page of messages, up to 50 per query, not the whole archive.

The extension and the Android app have no store listing yet, and the source code is in a private repository.

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