Ultra-portable Gantt chart tool for very regulated environments
I work for government agency with a lot of security considerations. We can't install anything and using public webapps is out of the question. Going through clearance or procurement to buy or install something is a pain. I needed a project management tool, and what we had on offer was too clunky and old. I built SimpleGantt to be ultra lightweight and portable. It's one HTML, one Javascript and one CSS file. Each project is saved into a single .yaml file. If you have a SharePoint environment you can "host" it by uploading the repo to SharePoint after renaming simplegantt.html to…
In plain words
SimpleGantt is a lightweight Gantt chart tool designed for highly regulated environments where software installation and cloud-based tools are restricted. Built as three files—HTML, JavaScript, and CSS—it requires no installation and stores projects in YAML format. The tool is ideal for government agencies and organizations with strict security requirements, and can be hosted on SharePoint by renaming the main file. It offers an alternative to outdated project management solutions while maintaining compatibility with secure, air-gapped systems.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
I work for government agency with a lot of security considerations. We can't install anything and using public webapps is out of the question. Going through clearance or procurement to buy or install something is a pain. I needed a project management tool, and what we had on offer was too clunky and old. I built SimpleGantt to be ultra lightweight and portable. It's one HTML, one Javascript and one CSS file. Each project is saved into a single .yaml file. If you have a SharePoint environment you can "host" it by uploading the repo to SharePoint after renaming simplegantt.html to simplegantt.aspx. That allows anyone with access to open the tool by simply having the URL. Try it at: https://aerugo.github.io/simplegantt/simplegantt This is a couple of days of tinkering, and mostly exists to keep me from going crazy while managing projects with lots of deadlines and dependencies, so don't expect much. But another person in the same position, finding this might lead to calmer days.
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