Wire · technology
Mojo Programming Language Goes Fully Open Source
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Fusion42 · 19 August 2026 · Fusion42 review
Modular has open-sourced the Mojo compiler and development tools under Apache 2.0 with LLVM exceptions, enabling developers to build and inspect the full language stack from source for the first time. Although community contributions to the compiler are not yet accepted, Modular aims to open contributions by end of 2026.
This Wire brief sits within Fusion42's coverage of Developer Tools.
◆ ◆ The Wire takeaway
You now have full access to build Mojo's compiler and tools from source, breaking dependency on Modular's binaries. This is your chance to deepen integration or build proprietary tooling ahead of community contributions opening later this year.
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1 source · 19 Aug 2026
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