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OccupySaaS 是一场由被裁员工程师发起的抗议运动与开源项目，主张用 AI 从公开文档以 clean-room 方式重建专有 SaaS 的替代品，首批发布 ZeroAuthy（Auth0 兼容身份服务器）和 SalesCompel（Salesforce 替代 CRM），均采用 Apache-2.0 许可。
The reverse engineering field welcomes craft-anything, a pure-Rust open source project that performs full-coverage observation of closed-source software at the system behavior level (system calls, memory state machines, network protocol packets), reconstructs a business architecture interaction graph, and generates modular specifications and skeleton code — compressing days of manual packet capture analysis into minutes. The project is currently in early alpha and is dual-licensed under MIT/Apache-2.0.
介绍 REA（Reverse Engineer Anything）这一 MCP 工具及其「干净室重建」工作流：REA 逆向分析应用生成带证据的 SPEC.md，Jev 审核规则，Opus 5.5 在未见过原代码的情况下重建功能，Haiku 5.5 用故意破坏的版本跑测试，实现模型不复制原代码的合规重建。
展示了如何结合 REA（逆向工程代理）与 Claude/Opus 5.5，在不复制任何原代码的情况下以「净室」方式重建软件功能，并用测试与故意损坏的版本验证正确性，单个项目 12 天恢复了 697 个函数。
Cody Ho and Niklas built a fully OpenGL ES 3.0 compliant GPU driver for the M4 Mac Mini in one month through clean-room reverse engineering, enabling Linux to run graphics-intensive applications like Minecraft at high frame rates.
Peter Kelly's repository documents the reverse engineering of the 1990s DOS game Captain Bible in the Dome of Darkness, providing a reproducible QEMU environment, research notes, and a clean-room engine specification.
The author builds a backyard Class-100 cleanroom, fabs semiconductor gear, and produces the world’s first working 5×4 DRAM array with sub-micron gate length, 12.3 fF capacitors, and a 2 ms refresh cycle.