# Reiser4

> computer file system, successor to ReiserFS

**Wikidata**: [Q2293002](https://www.wikidata.org/wiki/Q2293002)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Reiser4)  
**Source**: https://4ort.xyz/entity/reiser4

## Summary
Reiser4 is a computer file system designed as the successor to ReiserFS. Developed by Namesys, it was introduced in 2004 and is primarily used on Linux operating systems. It is named after its creator, Hans Reiser.

## Key Facts
- **Type**: File system (instance of `file system`)  
- **Developer**: Namesys (a free software company based in Oakland, USA)  
- **Inception**: 2004  
- **Predecessor**: ReiserFS  
- **Operating System**: Linux  
- **Named After**: Hans Reiser  
- **SourceForge Project**: `reiser4`  
- **ArchWiki Article**: Available in English (ID: 1175)  
- **Wikipedia Languages**: English, Spanish, Finnish, French, Italian, Japanese, Dutch, Norwegian, Polish, Portuguese  

## FAQs
### Q: What is the difference between Reiser4 and ReiserFS?  
A: Reiser4 is the successor to ReiserFS, offering improved performance and features. Both were developed by Namesys, but Reiser4 was designed to address limitations of its predecessor.  

### Q: Is Reiser4 still in use today?  
A: Yes, Reiser4 is primarily used on Linux systems, though its adoption is less widespread compared to other modern file systems.  

### Q: Who created Reiser4?  
A: Reiser4 was developed by Namesys, a free software company founded in 2004, and is named after its lead developer, Hans Reiser.  

## Why It Matters  
Reiser4 represents an evolution in file system design, aiming to improve upon ReiserFS with enhanced performance and reliability. While it hasn't achieved mainstream adoption, it remains notable for its technical innovations and niche use cases in Linux environments. Its development reflects the ongoing efforts to optimize data storage and retrieval, particularly in systems requiring high efficiency.  

## Notable For  
- **Successor to ReiserFS**: Designed to overcome limitations of its predecessor.  
- **Linux Compatibility**: Optimized for Linux operating systems.  
- **Technical Innovations**: Introduced advanced features for file management and storage efficiency.  

## Body  
### Development and Release  
- Developed by Namesys, a free software company founded in 2004.  
- Released in 2004 as the successor to ReiserFS.  

### Technical Specifications  
- **Operating System**: Linux  
- **SourceForge Project**: Hosted under the name `reiser4`.  
- **Documentation**: Detailed in the ArchWiki (English, ID: 1175).  

### Adoption and Legacy  
- Less widely adopted than other file systems but retains a niche user base.  
- Named after Hans Reiser, its lead developer.

## References

1. Freebase Data Dumps. 2013