[best] Free Open Source Quantum Computer Solutions -

License: Apache 2.0 The most popular Python-based SDK. Includes:

The "layer cake" of quantum computing usually consists of a high-level user interface, a compiler, and a backend (hardware or simulator). The following frameworks dominate the open-source landscape. free open source quantum computer solutions

: Perhaps the most popular framework, Qiskit is an open-source SDK for working with quantum computers at the level of pulses, circuits, and algorithms. Its 2.x era (released in 2025) focuses on performance and scalability for utility-scale workloads. License: Apache 2