# Gromit Mpx (open-source PDF tool)

> Gromit Mpx is a free, open-source PDF tool for Linux. Gromit-MPX is an on-screen annotation tool that works with any Unix desktop environment under X11 as well as XWayland. It has 1,399 GitHub stars and is released under the GPL-2.0 license.

Gromit-MPX is an on-screen annotation tool that works with any Unix desktop environment under X11 as well as Wayland. Its main use is for making presentations of some application. Normally, you would have to move the mouse pointer around the point of interest until hopefully everybody noticed it. With Gromit-MPX, you can draw everywhere onto the screen, highlighting some button or area.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/bk138/gromit-mpx |
| Platforms | Linux |
| Interface | desktop GUI |
| GitHub stars | 1,399 |
| License | GPL-2.0 (open source) |
| Replaces | n/a |
| Language | C |
| Website | none listed |
| Official | no |
| Category | PDF editors & tools |
| Latest release | 1.9.0 (Mar 18, 2026) |
| Last commit | Sep 1, 2026 |

## Install

### Flathub (Linux)

```sh
flatpak install flathub net.christianbeier.Gromit-MPX
```

Package page: https://flathub.org/apps/net.christianbeier.Gromit-MPX

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