Mojo Compiler Goes Open Source Under Apache 2.0 After Qualcomm Acquires Modular

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Modular open sourced the entire Mojo compiler and toolchain under the Apache 2.0 license on August 18, 2026, at its ModCon event, weeks after Qualcomm completed its roughly $3.92 billion all-stock acquisition of the company. The full toolchain is available on GitHub and can be built from source, making it a genuine open source release rather than a source-available arrangement. Mojo had reached version 1.0 just days before the open source announcement, which also coincided with the language hitting version 1.0. However, Modular is not yet accepting external contributions to the compiler, stating it aims to open that process by end of 2026, while noting the standard library has already received over 1,100 outside pull requests since 2024. Alongside the release, Modular expanded its MAX runtime to support AWS Trainium, Google TPUs, and Qualcomm datacenter chips, and announced Windows support in partnership with Microsoft.

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