Life & fun · September 23, 2023
I rewrote the 1990's LambdaMOO server
I got my start on the Internet in the very early 90s playing with, authoring in, and programming on LambdaMOO (https://en.wikipedia.org/wiki/LambdaMOO) and similar systems. Shared virtual social spaces, with a persistent object oriented authoring / scripting language. They can be classified as MUDs (depending on who you talk to) but the focus is social, creative / authoring, and shared programming not RPG gaming. I've always wanted to see this kind of thing modernized and further developed. Over the last 25 years or so I've worked on similar but novel & improved…
In plain words
This is a modernized reimplementation of LambdaMOO, the 1990s virtual social platform built on an object-oriented programming language. It targets creators and programmers interested in shared online spaces focused on collaborative authoring and social interaction rather than gaming. The software maintains compatibility with the original while leveraging contemporary technology including multicore processing, modern network protocols, and MVCC transactions for improved performance.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
I got my start on the Internet in the very early 90s playing with, authoring in, and programming on LambdaMOO (https://en.wikipedia.org/wiki/LambdaMOO) and similar systems. Shared virtual social spaces, with a persistent object oriented authoring / scripting language. They can be classified as MUDs (depending on who you talk to) but the focus is social, creative / authoring, and shared programming not RPG gaming. I've always wanted to see this kind of thing modernized and further developed. Over the last 25 years or so I've worked on similar but novel & improved things, but never finished. So I decided to just re-implement LambdaMOO and use that as a base, instead and keep compatibility as a goal, but build it out on a more modern foundation that takes advantage of multiple core machines, newer network protocols, newer connectivity methods, uses MVCC transactions for the shared database etc. LambdaMOO is a somewhat extensive system in that it is composed of compiler, a virtual machine, an object database, user permissions system, network runtime. In some ways it's kind of like a shared, text-based Smalltalk image/runtime... So quite a bit to implement and get right before it all works together. The big challenge throughout has been slavishly maintaining backwards compatibility so existing "cores" (databases) work. It's not done, but it's darn close. Would like for people who are into this kind of thing to check it out, and maybe even help. Many of the technical aspects here are still provisional, but this is the start. Constructive assistance welcome. (Yes, it's a rewrite in Rust, but that's not really the point, even though that's a cliche that's fun.)
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