ChatAttic is a local-only desktop app that brings WhatsApp, iMessage, Telegram, Messenger and SMS chat exports into one private, searchable, de-duplicated archive you actually own. Nothing is ever uploaded.
Publisher’s description
What is ChatAttic?
ChatAttic by M.R.H. Consultants Inc. is proprietary Windows software in the chat & messaging category.
Installation and requirements
The publisher provides MSI installers for 64-bit Windows. The main installer is 94.5 MB. It needs Windows 10 or newer. A silent install is possible with the installer’s documented switches. An MSI package is available for deployment with Group Policy, Intune or Configuration Manager.
Pros / Cons
Pros
- MSI package for managed deployment
- Documented silent install
- Updated in the last two months
Cons
- Proprietary licence: check the terms and price
- No native ARM64 build
In short: ChatAttic is a chat & messaging tool for 64-bit PCs. Administrators can deploy it unattended.
Is ChatAttic safe to download?
- The file is served by chatattic.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
3B7B45F7932494B67AB1F5ED0EAA1FE5BD1FC631A420F2D17B58F40A6424D1ED· Open the VirusTotal report for this hash - The link answered when we last checked it (November 4, 2026)
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 1 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 1.1.0Latest | November 3, 2026 | 94.5 MB | 64-bit MSI |
Install from the command line
Silent install ›winget install --id MRHConsultants.ChatAttic -emsiexec /i ChatAttic-1.1.0.msi /qn /norestartmsiexec /x {2A27EACC-E192-3DC8-A6F5-5A387FC43D3F} /qn /norestartRelated guide: How to use winget: install and update apps
Information
- Publisher
- M.R.H. Consultants Inc.
- Category
- Chat & messaging
- Licence
- Proprietary
- Price
- See the publisher’s site
- Requires
- Windows 11 / 10 (Windows 10+)
- Architecture
- 64-bit
- Installer
- MSI
- Version
- 1.1.0
- Released
- November 3, 2026
- Added to the catalogue
- November 3, 2026
- Versions listed
- 1
- Website
- chatattic.com
- winget ID
- MRHConsultants.ChatAttic
- MSI product code
- {2A27EACC-E192-3DC8-A6F5-5A387FC43D3F}
Ratings and reviews
No reviews yet. Be the first to rate it.
Alternatives to ChatAttic
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Frequently asked questions
Is ChatAttic free?
ChatAttic is proprietary (closed-source) software (licence: Proprietary). Whether it costs money depends on the edition: check the publisher’s site for prices and free tiers.
Is ChatAttic safe to download?
The download comes from chatattic.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install ChatAttic with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can ChatAttic be installed silently?
Yes. The silent install page lists the exact command for each installer, including msiexec for the MSI package.
Which Windows versions does ChatAttic support?
The installer requires Windows 10 or newer and is available for 64-bit.
Does ChatAttic run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
What are alternatives to ChatAttic?
Signal, Telegram Desktop, Discord, Slack and Rocket.Chat. The alternatives page compares them.
