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cyberarsenal.org
CyberArsenal is a forum focused on computer and network security and reverse engineering. Content requires signing up to view and participate. The site states there is no payment, credits system, or reply-to-reveal. Sections include general discussion, requests for installer or setup files, requests related to security or reversing, and red team tools and techniques.
late.sh
late.sh is a command-line community space for computer enthusiasts, accessed through any SSH client. It offers chat, radio stations, arcade games, a collaborative ASCII artboard, daily challenges and tech news discussion. Identity is based on SSH public key fingerprints, with an optional companion CLI for audio, a visualizer and image pasting.