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Way to Go: Fesod successfully entered Apache Incubator

On September 17, 2025, Beijing time, Fesod successfully passed the voting resolution of the Apache Foundation Incubator. According to the Apache Foundation mailing list, it was approved with 9 binding votes, with no abstentions or opposing votes, to accept Fesod into the Apache Incubator. This marked its official status as an incubation project under the Apache Software Foundation, the world's largest open-source foundation. On September 25, 2025, the Fesod repository was officially transferred to the Apache Software Foundation.

Fesod was originally named FastExcel and was officially open-sourced on GitHub in October 2024. With continuous project maintenance and iteration by the community members, as well as the continuous growth of the community, now the Fesod project has officially been announced to join the Apache Incubator. This marks a new beginning for the Fesod project, indicating that open-source community collaboration will become more standardized and internationalized!

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Introduction​

Apache Fesod (Incubating) is a high-performance and memory-efficient Java library for reading and writing spreadsheet files, designed to simplify development and ensure reliability. The name fesod (pronounced /ˈfɛsɒd/), an acronym for "fast easy spreadsheet and other documents," expresses the project's origin, background, and vision.

Apache Fesod (Incubating) can provide developers and enterprises with great freedom and flexibility. We plan to introduce more new features in the future to continually enhance user experience and tool usability. Apache Fesod ( Incubating) is committed to being your best choice for handling spreadsheet files.

Features​

  • High-performance Reading and Writing: Apache Fesod (Incubating) focuses on performance optimization, capable of efficiently handling large-scale spreadsheet data. Compared to some traditional spreadsheet processing libraries, it can significantly reduce memory consumption.
  • Simplicity and Ease of Use: The library offers a simple and intuitive API, allowing developers to easily integrate it into projects, whether for simple spreadsheet operations or complex data processing.
  • Stream Operations: Apache Fesod (Incubating) supports stream reading, minimizing the problem of loading large amounts of data at once. This design is especially important when dealing with hundreds of thousands or even millions of rows of data.

Current Development Status​

The project was initiated by the original core maintainer in 2024, aiming to provide a more efficient Excel processing solution and ensure long-term sustainable maintenance. Since its open-source status, a small community has been initially established. The main repository has received a total of 5.0K+ stars on GitHub, has released community versions 5 times, and has 20+ contributors. We have received continuous widespread attention and support from the community, which is both a recognition of our past work and an expectation for our future development.

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Why Join the Apache Incubator​

Joining the Apache Incubator is mainly based on the following reasons:

  • Under the guidance of the Apache Mature Open Source Foundation, the collaboration of open source projects and the operation of community governance will become more standardized.
  • Build a more prosperous and diverse developer community. We hope to attract more outstanding developers from home and abroad to join, making the developer community more diverse.
  • Expand the application scope and encourage its integration into more open source and commercial projects, promoting the development of new use cases and functions.

Next, the community will be guided by the Apache incubator mentors to manage and operate the community in accordance with the concept of "Community over Code", and also ensure that every outstanding contributor can be recognized. At the level of open-source products, listen to user feedback, improve and optimize the product usage experience, and build connections with the open-source ecosystem.

Introduction of the Supervisor​

  • tison(Champion)
  • Dave Fisher
  • PJ Fanning
  • Huajie Wang

Thank you all for your selfless assistance. You provided professional guidance in terms of compliance and process advancement. Special thanks to the project Champion, @tison. During the project's journey into the incubator, he/she led the entire process from the drafting stage of the proposal to discussions and ultimately to the initiation of voting, offering many valuable professional suggestions and guidance.

We believe that with the guidance of all the mentors, the community will grow more healthily in the future.

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