Opal is a Ruby to JavaScript compiler. It's source-to-source, making it fast as a runtime. Opal includes a compiler (which can be run in any browser), a corelib and runtime implementation. The corelib/runtime is also very small.
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There are no reported vulnerabilities
30 Day SummaryJan 23 2026 — Feb 22 2026
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12 Month SummaryFeb 22 2025 — Feb 22 2026
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