A simple tool to help you manually discover the depths of your spectra one spectrum at a time. It can load MGF files (only in centroid mode, also do not forget to deconvolute if you have TD data). Once loaded you can select a scan and add you annotation while tweaking the exact settings for generating the annotation. The annotation itself is interactive to help you discover what the spectrum means. Which you can then export as nice images for use in other environments.
Publisher’s description
What is Annotator?
Annotator by Snijderlab is open-source Windows software. It is written in Rust.
Installation and requirements
The publisher provides EXE (NSIS) and MSI installers for 64-bit Windows. It can be installed for the current user only, without administrator rights. 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.
Updates and version history
The current version is 1.2.1, released on September 1, 2025. The version history goes back to February 21, 2024: 9 releases, all linked to the official files. That is about 5.9 releases a year. The last update is more than a year old.
Popularity and file types
The source code on GitHub (snijderlab/annotator) has 43 stars.
Project description on GitHub: “A simple tool to help you manually discover the depths of your (complex) spectra, one spectrum at a time.”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- MSI package for managed deployment
- Documented silent install
- Installs without administrator rights
Cons
- No native ARM64 build
- No update for more than a year
In short: Annotator is an open-source Windows tool for 64-bit PCs. It is actively maintained. Administrators can deploy it unattended.
Is Annotator 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:
8E33ECE379158DB40133992A0BF176B67F1C802EDBA409DD28FCE687D2C88452· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 9 versions ›9 versions over 2 years · about 5.9 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 1.2.1Latest | September 1, 2025 | — | 64-bit EXE (NSIS)64-bit MSI |
| 1.2.0 | July 8, 2025 | — | 64-bit EXE (NSIS)64-bit MSI |
| 1.1.3 | May 30, 2025 | — | 64-bit EXE (NSIS)64-bit MSI |
| 1.1.2 | April 29, 2025 | — | 64-bit EXE (NSIS)64-bit MSI |
| 1.1.1 | April 28, 2025 | — | 64-bit MSI64-bit EXE (NSIS) |
| 1.1.0 | April 11, 2025 | — | 64-bit MSI64-bit EXE (NSIS) |
| 1.0.0 | January 20, 2025 | — | 64-bit MSI64-bit EXE (NSIS) |
| 0.2.2 | March 18, 2024 | — | 64-bit EXE (NSIS)64-bit MSI |
Install from the command line
Silent install ›winget install --id Snijderlab.Annotator -eAnnotator_1.2.1_x64-setup.exe /SRelated guide: How to use winget: install and update apps
Information
- Publisher
- Snijderlab
- Licence
- MIT
- Price
- Free
- Source code
- github.com/snijderlab/annotator
- Written in
- Rust
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- EXE (NSIS), MSI
- Version
- 1.2.1
- Released
- September 1, 2025
- Added to the catalogue
- February 21, 2024
- Versions listed
- 9
- Updates / year
- 5.9
- GitHub stars
- 43
- GitHub forks
- 5
- Website
- github.com
- winget ID
- Snijderlab.Annotator
- MSI product code
- {CD54010F-22D5-4D73-BBF3-D0BEC5AB75CE}
Ratings and reviews
No reviews yet. Be the first to rate it.
Frequently asked questions
Is Annotator free?
Yes. Annotator is open-source software under the MIT licence.
Is Annotator 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 Annotator 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 Annotator be installed silently?
Yes. The silent install page lists the exact command for each installer, including msiexec for the MSI package.
Does Annotator 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 Annotator?
The versions page lists all 9 versions with links to their official installer files, back to February 21, 2024.
Can I use Annotator without administrator rights?
Yes, there is a per-user installer that does not need administrator rights.
