Opal is a Ruby to JavaScript compiler. It is 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.

Required Ruby Version

>= 2.3

Authors

Elia Schito, meh., Adam Beynon

Versions

  1. 1.8.4.rc1 May 01, 2026 (1.28 MB)
  2. 1.8.3 May 01, 2026 (1.25 MB)
  3. 1.8.3.rc1 August 08, 2024 (1.25 MB)
  4. 1.8.2 November 23, 2023 (1.24 MB)
  5. 1.8.1 November 09, 2023 (1.24 MB)
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