Trellis is a Mermaid-compatible diagram renderer that uses custom routing
to produce overlap-free orthogonal SVG layouts. Supports flowchart, class, ER, C4 and architecture diagram types.
Publisher’s description
What is Trellis?
Trellis is a proprietary drawing & design program for Windows from Trellis Lab. It is written in Python.
Installation and requirements
Official installers exist for 64-bit as Portable. It runs without installation (portable). It needs Windows 10 or newer.
Updates and version history
The current version is 1.9.0, released on October 26, 2026. 6 versions are listed since July 22, 2026, each with links to its own installer files. The last update is less than a month old.
Pros / Cons
Pros
- Portable: runs without installation
- Updated in the last two months
Cons
- Proprietary licence: check the terms and price
- No native ARM64 build
In short: Trellis is a drawing & design tool for 64-bit PCs.
Is Trellis safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
52FD33579AFACC41324DCCB3F3CC84D6C6A6280CCC31B426562AF67273295294· Open the VirusTotal report for this hash - The link has not been checked yet
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 6 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 1.9.0Latest | October 26, 2026 | — | 64-bit Portable |
| 1.8.1 | September 25, 2026 | — | 64-bit Portable |
| 1.7.0 | September 10, 2026 | — | 64-bit Portable |
| 1.6.0 | August 22, 2026 | — | 64-bit Portable |
| 1.5.2 | August 21, 2026 | — | 64-bit Portable |
| 1.4.0 | July 22, 2026 | — | 64-bit Portable |
Install from the command line
Silent install ›winget install --id TrellisLab.Trellis -eRelated guide: How to use winget: install and update apps
Information
- Publisher
- Trellis Lab
- Category
- Drawing & design
- Licence
- Commercial License
- Price
- See the publisher’s site
- Source code
- github.com/trellis-lab/trellis
- Written in
- Python
- Requires
- Windows 11 / 10 (Windows 10+)
- Architecture
- 64-bit
- Installer
- Portable
- Version
- 1.9.0
- Released
- October 26, 2026
- Added to the catalogue
- July 22, 2026
- Versions listed
- 6
- Website
- github.com
- winget ID
- TrellisLab.Trellis
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is Trellis free?
Trellis is proprietary (closed-source) software (licence: Commercial License). Whether it costs money depends on the edition: check the publisher’s site for prices and free tiers.
Is Trellis safe to download?
The download comes from github.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 Trellis 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.
Which Windows versions does Trellis support?
The installer requires Windows 10 or newer and is available for 64-bit.
Does Trellis run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Where can I download an older version of Trellis?
The versions page lists all 6 versions with links to their official installer files, back to July 22, 2026.
Can I use Trellis without administrator rights?
Yes, it is portable: unpack and run it.
What are alternatives to Trellis?
draw.io, Inkscape, LibreCAD, Graphviz and Figma. The alternatives page compares them.
