Top 10 pdp-11 Open-Source Projects

unix-v1

3 219 7.4 C

Restoration of 1st Edition UNIX kernel sources from Bell Laboratories
cpu11

2 146 5.3 Verilog

Revengineered ancient PDP-11 CPUs, originals and clones
InfluxDB

www.influxdata.com sponsored

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
w11

1 116 4.6 VHDL

PDP-11/70 CPU core and SoC
pdp11

2 50 5.4 C

PDP-11 emulation

Project mention: F/OSS Comics: 8. The Origins of Unix and the C Language | news.ycombinator.com | 2024-04-17

> I know there is a hardware accurate PDP-11 emulator
Several. The KA11 was the first PDP11 CPU accurately emulated but the KD11 also seems to be working.
https://github.com/aap/pdp11

nankervis-pdp11-js

2 46 7.4 JavaScript

PDP 11/70 and PDP 11/45 emulator in Javascript
fuzzball-operating-system

3 25 10.0 Fortran

PDP-11 operating system.

Project mention: David Mills' Fuzzball | news.ycombinator.com | 2024-01-18

Oh that's interesting, thank you. I never knew that so much of this stuff was originally written in assembly, I thought it was all 'C' from day #1.
For instance this FTP server: https://github.com/pdp11/fuzzball-operating-system/blob/mast...

xxdp

2 24 0.0

XXDP was, and remains, the PDP-11 diagnostic operating system. This project attempts to recover XXDP sources and documents.
WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
tenex-bcpl

1 7 3.2 Roff

BBN's TENEX BCPL
unixman

1 7 3.3 Roff

Old versions of the UNIX Programmer's manual
PDP-11

1 3 1.8

A collection of PDP-11 related files

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).