Chat with other Trillian users or those on Facebook, Twitter, Google...

Trillian
Report    Share

Browse by Company

Adobe, Apowersoft, Ashampoo, Autodesk, Avast, Corel, Cyberlink, Google, iMyFone, iTop, Movavi, PassFab, Passper, Stardock, Tenorshare, Wargaming, Wondershare

Trillian

  -  33.67 MB  -  Freeware
Free Download

Safe & Secure

  • Latest Version

    Trillian 6.6 Build 18 LATEST

  • Review by

    Juan Garcia

  • Operating System

    Windows 7 / Windows 8 / Windows 10 / Windows 11

  • User Rating

    Click to vote

  • Author / Product

    Cerulean Studios / External Link

  • Filename

    trillian-v6.6.0.18.exe

  • MD5 Checksum

    c715a876ed382a58b58d9a4742d996fb

Trillian is a multi-protocol instant messaging client for Windows developed by Cerulean Studios. It allows users to manage different IM services, such as Facebook Chat, Google Chat, and XMPP/Jabber, from one interface.

Today, it focuses more on its own messaging network, Trillian (IM), while maintaining limited support for legacy protocols and offering secure enterprise messaging solutions.

Features

Multi-Protocol Messaging: Connect to various chat services or use Trillian’s own IM network.

Cross-Platform Sync: Conversations sync in real-time across Windows, macOS, Android, iOS, and the web.

Message History: Searchable conversation logs are stored securely in the cloud.

Privacy-Focused: Offers TLS encryption, no ads, and minimal metadata logging.

Business Tools: HIPAA-compliant messaging, centralized admin controls, and secure team communication.

Customizations: Skins, themes, and status messages for a personalized look.

User Interface

Trillian's UI is clean, minimalist, and user-friendly. The layout divides contacts, chat windows, and settings into a structured sidebar format.

Theme options let users choose light or dark modes, and the chat interface supports inline images, file transfers, and timestamped messages.

It feels snappy and efficient, ideal for both casual users and professionals.

Installation and Setup
  • Run the setup file and follow the guided installation steps.
  • Create or sign in to a Trillian account.
  • Optionally, connect other IM services or invite contacts.
  • Setup typically takes under 5 minutes.
How to Use
  1. Add or invite contacts to your Trillian list.
  2. Start a conversation by clicking on a contact's name.
  3. Use text chat, file sharing, or group messaging as needed.
  4. Access message history or switch devices with synced data.
  5. For business users, use the admin console to manage teams, compliance settings, and users.
FAQs

Is Trillian still supported in 2026?
Yes, the program is still actively maintained and updated for both individuals and business users.

Can I use Trillian without the cloud?
You can use it locally, but syncing and message history features require cloud access.

Does Trillian support video or voice calls?
No, it focuses on text-based messaging and does not include voice or video calling.

Is Trillian secure?
Yes, it uses TLS encryption, stores minimal metadata, and offers HIPAA-compliant options for healthcare.

Can I integrate Trillian with Slack or Teams?
Not directly. This software is a standalone platform, but you can run it alongside other apps.

Alternatives

Pidgin – Open-source multi-protocol IM client.

Slack – Team collaboration tool with more advanced integrations.

Telegram Desktop – Secure, fast messaging with cloud sync.

Signal Desktop – Privacy-focused encrypted messaging app.

Pricing

Free Plan: Basic messaging features, limited support.

Pro Plan ($3/month): Message history, support, themes, cloud sync.

Business Plan: Custom pricing for team features, compliance, and admin tools.

System Requirements
  • OS: Windows 11, 10, 8 or 7
  • RAM: 2 GB minimum
  • Storage: 100 MB
  • Internet: Required for sync and cloud features
PROS
  • Lightweight and fast
  • Unified messaging across devices
  • Strong privacy policies
  • HIPAA compliance for healthcare
  • Customizable interface
CONS
  • No voice/video call support
  • Limited integration with modern platforms
  • Legacy IM protocol support is outdated
  • User base is smaller than major competitors
Conclusion

Trillian is a reliable and secure messaging client that caters to users who want a lightweight and privacy-respecting IM experience. While its heyday as a multi-network messenger has passed, it has found a niche in secure enterprise communication and personal use for those wanting simplicity and cross-device syncing.

Also Available: Download Trillian for Mac

Download Trillian Latest Version
Why is this app published on FileHorse? (More info)

  • Trillian 6.6 Build 18 Screenshots

    The images below have been resized. Click on them to view the screenshots in full size.

    Trillian 6.6 Build 18 Screenshot 1
  • Trillian 6.6 Build 18 Screenshot 2
  • Trillian 6.6 Build 18 Screenshot 3
  • Trillian 6.6 Build 18 Screenshot 4
  • Trillian 6.6 Build 18 Screenshot 5

What's new in this version:

Feature:
- Chat Window: Attach several pictures at once by dropping or inserting them
- Chat Window: Multiple files or folders now compress into a single archive when sent
- Chat Window: New toggle to send images in-line or as attachments
- History: View a day as text even when chat history is in the cloud
- Notifications: Sounds for outgoing reactions and reaction removals, with a single sound setting
- Status: Choose the hour when status messages clear

Changed:
- Spell Check: Updated the English autocorrect rules

Fixed:
- Chat Window: Clearer error when dropping files while file sharing is disabled
- Chat Window: Dropped files fall back to peer-to-peer when server hosting is unavailable
- Chat Window: an intermittent crash when opening windows
- Chat Window: an issue where some HTML-encoded text could display incorrectly
- Chat Window: messages that could not be deleted
- Chat Window: outgoing message sounds and events sometimes not firing
- Chat Window: undo in the message box not always restoring text
- Chat Window: In-line images now highlight when selected
- Contact List: Conversation tabs now group under the contact's visible group
- Contact List: new contacts sometimes filing into the wrong group
- Contact List: tab settings being lost after upgrading
- Emoticons: clearing a GIF search not restoring trending results
- Emoticons: the emoticon button reopening the picker instead of closing it
- Emoticons: Recently used emoticons no longer shuffle while the picker is open
- General: a rare crash when deleting an account
- History: an issue saving images from the timeline
- History: the search box position when searching all conversations
- History: the View button position on the Images view
- Installer: Clearer errors for missing or damaged installation files
- Installer: Trillian failing to load when components were not signed
- Installer: Silent installs no longer stall behind hidden error dialogs
- Media: canceled downloads leaving images partially grey
- Media: previews for links whose web address contains encoded characters
- Media: sending media to contacts on other domains sometimes failing
- Media: the same image downloading twice corrupting its cached copy
- Media: Saving images now follows the domain media sharing policy
- Notifications: duplicate reaction sounds after upgrading
- Notifications: reaction sound settings not surviving a restart
- Sign In: a crash that could occur when closing the sign-in window
- Sign In: Cancel closing Trillian instead of returning to the sign-in screen after a two-factor retry
- Sign In: a denied or expired two-factor push leaving sign-in stuck
- Sign In: label alignment while a two-factor push is pending
- Spell Check: autocorrect only working in English
- Spell Check: autocorrect occasionally replacing words with unrelated text
- Spell Check: regional languages (like British English) not spell checking

Top Downloads

More Popular Software »