New Version 4.10.1 Released

SICStus Prolog

State-of-the-art, ISO standard compliant Prolog development system. Built for performance, reliability, and enterprise applications.

Latest Version
4.10.1
Performance
303 MLips
Standard
ISO/IEC 13211
MiniZinc Awards
5 Medals

Why Choose SICStus?

Proven in mission-critical applications at NASA, Ericsson, and leading research institutions worldwide.

High Performance

303 MLips on modern hardware with JIT compilation to native code for x86 platforms. Handle massive datasets with ease.

ISO Compliant

Full compliance with ISO/IEC 13211-1 standard including all technical corrigenda. Write portable, standards-based code.

Constraint Programming

Award-winning CLP(FD) solver. MiniZinc Challenge medals in 2009, 2014, 2020, 2021, and 2022.

Cross-Platform

Native support for Windows, Linux, and macOS. 32-bit and 64-bit architectures. Deploy anywhere.

Interoperability

Seamless integration with C/C++, Java, .NET, Tcl/Tk, ODBC, XML, JSON, and MiniZinc.

SPIDER IDE

Eclipse-based IDE with refactoring, on-the-fly analysis, source debugging, and execution profiling.

Award-Winning Technology

SICStus Prolog's constraint solving capabilities have been recognized in the international MiniZinc Challenge competition.

MiniZinc 2022 MiniZinc 2021 MiniZinc 2020 MiniZinc 2014 MiniZinc 2009

Trusted by Industry Leaders

From space exploration to telecommunications, SICStus powers critical applications worldwide.

NASA

Clarissa, a fully voice-operated procedure browser for the International Space Station, helping astronauts navigate complex procedures hands-free.

Ericsson

Network Resource Manager uses SICStus for modeling and validating complex multi-vendor IP backbone network configurations.

RedPrairie

COPLEX real-time optimization engine for logistics, achieving significant cost savings through dynamic constraint solving.

Ready to Get Started?

Download a free evaluation version and experience the power of SICStus Prolog.