How to find an Agar.io Ogar private server?

You can set up your own Ogar server quite easily, see: https://github.com/OgarProject/Ogar

If you are on Windows, you can download the latest binary build of Ogar from this page. The binary is the easiest way to get started running an Ogar server. If you'd like to tinker with the source code, you can follow the instructions below (and slightly modify them) to run the source on Windows.

As Ogar is written in Node.js, you must have Node.js and its "ws" module installed to use it (unless you are using the Windows binary). You can usually download Node using your distribution's package manager (for *nix-like systems), or from the Node website. To install the "ws" module that is required, open up your system command line (cmd for windows, terminal for mac) and type "npm install ws". If you are on Linux, you can use the install script which would also automatically install node.js and ws.

- https://github.com/OgarProject/Ogar#obtaining-and-using

if you'd like to set up your own server, ask in the comments and I can elaborate on how to do so using Ogar.

Once you've set up your own server, you can play with anyone who is on the same Wi-Fi network as you quite easily (tell them to visit agar.io/?ip=your_ip:443).

To get your ip address, on Windows, go to Start and search for and open cmd. Enter the ipconfig command to see your ip address.

_{(source: the-computer-problems-guru.com)}

In the above example, you would share the link http://agar.io/?ip=192.168.1.138:443 with your friends, if that's the computer the server is running on.

Again, if you'd like to play with people on your same network, ask for elaboration and I will edit this answer.

And, if you'd like to share your game with the world (more risky, leaves you exposed to atacks) you can set up port forwarding for your router and share your router's ip address and the game server's port on any forum you want.

Honestly, the only way you might find someone else's private server online is by constantly watching agar.io forums and youtube channels.