Programming languages

Operating systems

Developers and organizations

Typing disciplines

Home Programming languages Operating systems Developers and organizations Paradigms Typing disciplines Licenses Licenses Platforms System types Countries Industries Languages by year Rankings

ExpertClub

Stories Advertise About Contact

Home
Operating systems
PenDOS

Operating system

PenDOS

Type	operating system
Developer	Communication Intelligence Corporation (United States)

Sources: Wikidata (CC0) · Wikidata Q61997221

Typeoperating system

DeveloperCommunication Intelligence Corporation (United States)

Type: operating system

Classic Mac OS
Cloud OS
Cobalt Qube
Coherent
Commotion
Compatible Time-Sharing System
Computer System Operating System
ContactOffice

ExpertClubLanguages and operating systems

ExpertClub is a technical catalogue of programming languages and operating systems.

[email protected]

Catalogue

Programming languages
Operating systems
Developers and organizations
Paradigms
Typing disciplines
Licenses

Paradigms

object-oriented programming
imperative programming
procedural programming
functional programming
structured programming
multi-paradigm programming

Rankings

The oldest programming languages
The largest developers
The oldest developers

ExpertClub

Stories
Advertise
About
Contact

© 2026 ExpertClub

Privacy Terms of use Image credits

ExpertClub