Apptainer is a secure, portable, and easy-to-use container system that provides absolute trust and security. It is widely used across industry and academia in many areas of work. It features:

• An immutable single-file container image format, supporting cryptographic signatures and encryption.
• Integration over isolation by default. Easily make use of GPUs, high speed networks, parallel filesystems on a cluster or server.
• Mobility of compute. The single file SIF container format is easy to transport and share.
• A simple, effective security model. You are the same user inside a container as outside, and cannot gain additional privilege on the host system by default.

Apptainer Project Meeting at HPSF Conference 2026

View the full playlist on YouTube.