MongoDB Atlas is the developer-friendly database used to build, scale, and run gen AI and LLM-powered apps—without needing a separate vector database. Atlas offers built-in vector search, global availability across 115+ regions, and flexible document modeling. Start building AI apps faster, all in one place.
Start Free
Level Up Your Cyber Defense with External Threat Management
See every risk before it hits. From exposed data to dark web chatter. All in one unified view.
Move beyond alerts. Gain full visibility, context, and control over your external attack surface to stay ahead of every threat.
Reverse Polish Notation interpreter for use as an interactive calculator in conjunction with the standard Python interactive interpreter. Easily extended by the user.
REPCAL (REverse Polish CALculator) is a light and fast calculator in RPN (reverse polish notation) mode for the console (command line). It is written in 180 lines of Python code, and can be used both interactively or inside shell scripts.