Meta Joins Kotlin Foundation

We are proud to announce that Meta has officially joined the Kotlin Foundation as a gold member, marking a significant milestone in our ongoing commitment to Kotlin and the broader Android development ecosystem.

Over the past several years, Meta engineers have been actively migrating our extensive Android codebase—comprising tens of millions of lines—from Java to Kotlin. To facilitate this massive transition, we developed an internal tool called Kotlinator, which automates much of the conversion process while ensuring the resulting Kotlin code is idiomatic and compatible with our internal frameworks. We have continued to share these efforts as a part of the enterprise Java-to-Kotlin working group.

In addition to these internal efforts, we at Meta have been sharing our work publicly through open source projects such as Kotlin and Android build toolchain in Buck2. Initiatives like this toolchain aim to provide tooling and best practices for enhancing build speeds and scalability, ultimately benefiting the broader developer community. 

Meta’s involvement in the Kotlin Foundation aligns with our broader strategy to support and advance the Kotlin ecosystem. Meta will contribute to initiatives in the Kotlin Foundation’s grants program, which support open source library authors and encourage innovation among students and developers. Meta’s membership in the Kotlin Foundation underscores our dedication to fostering a robust, collaborative Kotlin community and advancing the language’s capabilities across platforms.

To learn more about Meta’s open source efforts, visit the Meta Open Source site, subscribe to our YouTube channel, or follow us on Facebook, Instagram, Threads, X, and LinkedIn.