This is not a full ManicTime Windows port to Linux. It is only a tracker, which can send computer usage data to ManicTime Server, where you can view the reports.
To use it, you need to have ManicTime Server v3.3 (released in June 2016) or later installed on some Windows machine. You can see ManicTime server version in bottom right corner of any page on ManicTime Server.

Installation

1. Update Mono package repository

Skip this step if:

  • your Mono version (mono -V) is already equal or greater than v4.8.0.524
  • you have Arch Linux


To install/update mono, follow the first step of instructions for your Linux distribution ("1. Add the Mono repository to your system").

2. Download and install package

Ubuntu, Mint

Download ManicTime.deb and double click on it to start installation.

Debian

Download ManicTime.rpm and run it with
sudo dpkg -i ManicTime.deb; apt -f install -y;

CentOS and RedHat

Download ManicTime.rpm and run it with
sudo yum install <downloaded file>.rpm

Arch Linux

Run these commands:
pacman -S mono
pacman -S libxss
pacman -S libappindicator-gtk3
            
Download ManicTime.tar.gz, extract to some folder and run it with
./manictime

3. Run ManicTime

Run ManicTime from StartMenu/Applications/Office/ManicTime. If it runs successfully, you should see ManicTime icon in the status menu bar.

Setup server connection

Open server connection window
First enter the ip and port information of ManicTime server.
Then enter your username and password (if server is using Windows authentication, then these are your Windows credentials, same as when you login to Windows).
Server connection window
Then go to the ManicTime server, Administration, Connected devices. You should see Linux machine under connected devices. You should also see data coming from Linux on Timelines report.
View data to server
You can also view the data in ManicTime for Windows.
View data in ManicTime Windows