carrotsearch/hppc

High Performance Primitive Collections for Java

1,051

stars

654

commits

Java

primary language

Aug 13, 2026

updated

labs.carrotsearch.com

README

HPPC: High Performance Primitive Collections

Collections of primitive types (maps, sets, stacks, lists) with open internals and an API twist (no java.util.collections.* compatibility).

See the following for more information:

See ALTERNATIVES.txt if you're just shopping around.

See LICENSE.txt to make your company's lawyer happy.

See CHANGES.txt for API changes and updates.

(c) Carrot Search s.c. (and contributors), https://carrotsearch.com/

Contributors

dweiss

581 commits

Svistoplyaz

30 commits

bruno-roustant

28 commits

gdelafosse

3 commits

carrotsearch/hppc

High Performance Primitive Collections for Java

1,051

stars

654

commits

Java

primary language

Aug 13, 2026

updated

labs.carrotsearch.com

README

HPPC: High Performance Primitive Collections

Collections of primitive types (maps, sets, stacks, lists) with open internals and an API twist (no java.util.collections.* compatibility).

See the following for more information:

See ALTERNATIVES.txt if you're just shopping around.

See LICENSE.txt to make your company's lawyer happy.

See CHANGES.txt for API changes and updates.

(c) Carrot Search s.c. (and contributors), https://carrotsearch.com/

Contributors

dweiss

581 commits

Svistoplyaz

30 commits

bruno-roustant

28 commits

gdelafosse

3 commits

Languages

Java

96.7%

ANTLR

3.3%