Sigma

Sigma knowledge engineering system is an system for developing, viewing and debugging theories in first order logic. It works with Knowledge Interchange Format (KIF) and is optimized for the Suggested Upper Merged Ontology (SUMO) www.ontologyportal.org . Sigma has moved to github.com/ontologyportal/sigmakee

Features

natural language generation
theorem proving
ontology browsing

Project Samples

Project Activity

See All Activity >

License

GNU General Public License version 2.0 (GPLv2)

Follow Sigma

Sigma Web Site

Other Useful Business Software

Ship Agents Faster

Transform your applications and workflows into powerful agentic systems at global scale.

Gemini Enterprise Agent Platform lets you rapidly build, scale, govern and optimize production-ready agents grounded in your organization's data. The platform enables developers to build custom or pre-built agents for virtually any use case. New customers get $300 in free credits.

Get Started Free

Rate This Project

User Ratings

5.0 out of 5 stars

★★★★★

★★★★

★★★

★★

★

ease 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5

features 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5

design 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5

support 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5

User Reviews

Filter Reviews:

All

nathanfernandez Posted 2013-06-01

Very useful. Thanks.

1 user found this review helpful.
sagaskoog Posted 2012-01-06

Nice tool!

Additional Project Details

Operating Systems

Linux, Windows

Languages

English, German, Hindi, Italian

Intended Audience

Developers, Science/Research

User Interface

Web-based

Programming Language

C++, Java

Related Categories

C++ Artificial Intelligence Software, Java Artificial Intelligence Software

Registered

2004-02-18

Similar Business Software

GetResponse

GetResponse is a lifecycle automation platform for businesses that want to drive more consistent, repeatable revenue across the entire customer journey. We help you move customers from first touch to first purchase, repeat purchase, and reactivation - using email, SMS, push notifications, and...

See Software
Devin Desktop

Devin Desktop (formerly Windsurf) is an AI-powered development environment that combines a full-featured IDE with advanced coding agents in a unified workspace. Formerly known as Windsurf, the platform enables developers to manage local and cloud-based AI agents, delegate tasks, review code, and...

See Software
Pylon

Pylon is an All-in-one B2B Support Platform for modern B2B businesses. We bring together everything a post-sales teams team needs including a ticketing system, B2B omnichannel integrations (Slack Connect, Microsoft Teams), modern chat widget, knowledge base, AI support bot, account...

See Software
Frontegg

Frontegg is a Customer Identity and Access Management (CIAM) platform that simplifies authentication, authorization, and user management for SaaS companies. It enables developers to implement advanced identity features quickly, then shift ongoing administration to other teams. With Frontegg,...

See Software
Viktor

Viktor is a persistent AI agent that operates directly within your Slack or Microsoft Teams workspace as an autonomous coworker. Unlike traditional chatbots, Viktor has its own cloud-based computer where it writes code, deploys apps, and executes tasks across more than 3,000 integrations. It...

See Software
Pipefy

Pipefy is the AI-driven Business Orchestration and Automation Technologies (BOAT) platform that delivers enterprise results in days, not months. Designed as a secure orchestration layer, Pipefy bridges the gap between rigid legacy systems (ERPs/CRMs) and agile business needs. It allows IT...

See Software