apache/fesod

Health v2 · maintenance only

Adoption not part of the score

6175 stars · 519 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Apache Fesod (Incubating) is a high-performance, memory-efficient Java library for reading and writing spreadsheet files such as xlsx, xls, and csv. It is the Apache-incubated successor to EasyExcel, using stream-based processing to handle very large files without causing out-of-memory errors.

Use cases

• read large excel files in java without running out of memory
• write xlsx spreadsheets from java data
• import excel data into a java application
• export reports to excel or csv
• stream-process millions of spreadsheet rows
• parse csv files in java
• replace apache poi with a simpler excel api

When to choose

• you need to read or write xlsx/xls/csv in Java with low memory overhead
• you handle very large spreadsheets that crash POI-based solutions with OOM
• you want a simple listener-based API over raw Apache POI
• you need an Apache-licensed, actively maintained EasyExcel successor

When to avoid

• you need to manipulate spreadsheet formatting, charts, or formulas in depth
• you are not on the JVM
• you need to generate other office formats like docx or pptx
• you require a stable non-incubating release for strict governance policies

Facets

library · maturity active

serialization file-system developer-tools files developer-tools spreadsheets jvm cross-platform excel xlsx csv memory-efficient streaming-read apache-poi easyexcel-successor spreadsheet-processing

Member repositories

For agents

markdown · JSON · MCP: product_card(name="apache/fesod")