JavaFastPFOR by lemire

A simple integer compression library in Java

created at July 6, 2012, 9:05 p.m.

40 +0

538 +0

62 +0

Chronicle-Network by OpenHFT

A High Performance Network ( TCP/IP ) Library

created at Jan. 15, 2015, 2:55 p.m.

41 +0

245 +0

85 +0

compile-testing by google

Testing tools for javac and annotation processors

created at Aug. 26, 2013, 9:30 p.m.

44 +0

701 +0

119 +0

allocation-instrumenter by google

A Java agent that rewrites bytecode to instrument allocation sites

created at Feb. 12, 2015, 12:29 a.m.

46 +0

481 +0

90 +0

jnr-ffi by jnr

Java Abstracted Foreign Function Layer

created at Feb. 3, 2011, 4:25 a.m.

49 -1

1,258 +1

157 +0

one-nio by odnoklassniki

Unconventional I/O library for Java

created at Nov. 13, 2012, 8:15 a.m.

50 +0

660 -1

97 +0

perfj by coderplay

PerfJ is a wrapper of linux perf for java programs.

created at June 8, 2015, 8:11 p.m.

51 +0

352 +0

56 +0

tcpreplay by appneta

Pcap editing and replay tools for *NIX and Windows - Users please download source from

created at Nov. 20, 2013, 1:10 a.m.

51 +0

1,192 +1

269 +0

drip by ninjudd

Fast JVM launching without the hassle of persistent JVMs.

created at Aug. 24, 2012, 5:12 a.m.

52 +0

1,547 +0

70 +0

statsd-jvm-profiler by etsy

Simple JVM Profiler Using StatsD and Other Metrics Backends

created at Jan. 13, 2015, 5:19 p.m.

53 +0

330 +0

93 +0

parboiled by sirthias

Elegant parsing in Java and Scala - lightweight, easy-to-use, powerful.

created at Oct. 5, 2009, 4:16 p.m.

53 +0

1,279 +0

155 +0

capsule by puniverse

Dead-Simple Packaging and Deployment for JVM Apps

created at April 18, 2014, 12:15 p.m.

55 +0

1,150 +1

100 +0

Zero-Allocation-Hashing by OpenHFT

Zero-allocation hashing for Java

created at Oct. 31, 2014, 4:28 a.m.

57 +0

795 +0

136 +0

rtree by davidmoten

Immutable in-memory R-tree and R*-tree implementations in Java with reactive api

created at Aug. 26, 2014, 12:29 p.m.

57 +0

1,094 +1

211 +0

hppc by carrotsearch

High Performance Primitive Collections for Java

created at Feb. 22, 2011, 3:14 p.m.

59 +0

985 +2

152 +0

sulong by graalvm

Obsolete repository. Moved to oracle/graal.

created at Jan. 18, 2016, 10:12 a.m.

59 +0

628 +0

63 +0

ohc by snazy

Java large off heap cache

created at Nov. 20, 2014, 12:28 a.m.

60 +0

1,071 +3

179 +1

high-scale-lib by boundary

A fork of Cliff Click's High Scale Library. Improved with bug fixes and a real build system.

created at April 15, 2011, 9:54 p.m.

63 +0

415 +0

61 +0

robovm by MobiVM

Ahead of time compiler for JVM bytecode targetting iOS, Mac OSX and Linux

created at April 20, 2016, 8:14 p.m.

66 +0

965 +3

133 +0

likwid by RRZE-HPC

Performance monitoring and benchmarking suite

created at May 4, 2015, 4:13 p.m.

66 +0

1,678 +6

229 +0