Java Data structures

9.9

9.5

Protobuf

9.5

4.1

fgl

9.3

9.2

Apache Thrift

8.8

4.6

adjunctions

8.0

9.1

Wire

7.6

9.2

Apache Avro

16 Data structures libraries and projects

Protobuf

9.9 9.5 L1 C++

Google's data interchange format.
fgl

9.5 4.1 Haskell

Martin Erwig's Functional Graph Library
Apache Thrift

9.3 9.2 L1 C++

Data interchange format that originated at Facebook.
adjunctions

8.8 4.6 Haskell

Adjunctions and representable functors
Wire

8.0 9.1 L1 Java

Clean, lightweight protocol buffers.
Apache Avro

7.6 9.2 L1 Java

Data interchange format featuring among others: dynamic typing, untagged data, absence of manually assigned IDs.
SBE

7.5 9.3 L1 Java

Simple Binary Encoding, one of the fastest message formats around.
Tape

7.5 1.8 L4 Java

A lightning fast, transactional, file-based FIFO.
Apache Parquet

7.2 8.1 L2 Java

Columnar storage format based on assembly algorithms from the Dremel paper by Google.
representable-functors

6.5 0.0 Haskell

Representable functors
Persistent Collection

4.8 2.3 L4 Java

Persistent and immutable analogue of the Java Collections Framework.
Apache Orc

4.7 8.1 L1 C++

Fast and efficient columnar storage format for hadoop based workloads.
Big Queue

4.6 0.0 Java

A big, fast and persistent queue based on memory mapped file.
graph-wrapper

4.0 0.0 Haskell

A wrapper around the standard Data.Graph with a less awkward interface
dexx

3.3 0.6 L3 Java

Persistent (immutable) collections for Java and Kotlin
hjson-java

2.8 1.5 L3 Java

Hjson for Java

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