...monosoho ran a Vanilla Minecraft server starting back in November 2010 on Alpha Minecraft 1.2.3_04.
Before Alpha 1.2.0 Notch was making continuous changes while devloping Minecraft. Making "Seecret" weekly releases on Fridays with new features that the community had to discover. With Alpha 1.2 and the Halloween Update, these seecret releases stopped with a final Seeecret Saturday release.
"Not So Secret Saturday" (NSSS) is a fork of Minecraft Alpha 1.1.2_01, fixing bugs and adding features both ones proposed by Notch and ones with an 'Alpha vibe'.
We're currently running NSSS Alpha 1.1.11_100 in all its multiplayer glory!
Once you have NSSS installed, the IP is monosoho.net.au:25042
The server is in Whitelist Mode, meaning that you will need a valid Mojang Minecraft account, a client with NSSS installed (see below), and be added to the whitelist.
The whitelist is managed via Jyration's Community Discord "Jynation". @monotonehell your Minecraft IGN in the #server-chat channel and ask to be whitelisted. Remember timezones exist so allow up to a day for this to happen.
Below are two choices for instalation; BetaCraft Launcher or MultiMC Launcher. Choose the one with which you feel more comfortable.
Note the pictures below are old. Where they say "1.1.9" look for "1.1.11_11".
Betacraft is a group focused on old-school Minecraft. It was founded in 2013, starting as a Minecraft nostalgia server, they also provide the Betacraft Launcher, which brings back legacy versions support (created in August 2018) and the Betacraft Proxy, which fixes inaccuracies common in other launchers (created in March 2018). A combination of the proxy and the launcher fix the biggest flaws of the official Minecraft launcher. For example, they provide fixes for skins, capes, lack of sound effects, client crashes, etc.
To install BetaCraft Launcher with an instance of NSSS:
MultiMC is an open source Minecraft Launcher, which has many features, like managing multiple instances of Minecraft all to be installed at once with their own versions, configs and mods.
To install MultiMC with an instance of NSSS:
MultiMC should download the instance and install it. Add your Minecraft account to MultiMC (top right corner). Once your Mojang credentials are added, launch the instance and connect to the IP shown above.