What's nice there

eTrice provides an implementation of the ROOM (Real-Time Object-Oriented Modeling) modeling language together with editors, code generators for Java, C++ and C code and exemplary target middleware.
The model is defined in textual form (Xtext) with graphical editors (Graphiti) for the structural and behavioral (i.e. state machine) parts.
http://www.eclipse.org/etrice/

Trace Compass is a Java tool for viewing and analyzing any type of logs or traces. Its goal is to provide views, graphs, metrics, etc. to help extract useful information from traces, in a way that is more user-friendly and informative than huge text dumps.
http://projects.eclipse.org/projects/tools.tracecompass


https://developers.google.com/web/fundamentals/


FlatBuffers is a serialization library for games and other memory constrained apps.
https://github.com/google/flatbuffers

Protocol Buffers - Google's data interchange format.
https://github.com/google/protobuf

The C++ Network Library Project -- header-only, cross-platform, standards compliant networking library.
https://github.com/google/cpp-netlib

A fast compressor/decompressor.
https://github.com/google/snappy

Brotli compression format.
https://github.com/google/brotli

Fruit is a dependency injection framework for C++.
https://github.com/google/fruit

RE2 is a fast, safe, thread-friendly alternative to backtracking regular expression engines like those used in PCRE, Perl, and Python. It is a C++ library.
https://github.com/google/re2

redgrep is a grep based on regular expression derivatives.
https://github.com/google/redgrep

Gumbo is an implementation of the HTML5 parsing algorithm implemented as a pure C99 library with no outside dependencies.
https://github.com/google/gumbo-parser

lmctfy is the open source version of Google’s container stack, which provides Linux application containers.
https://github.com/google/lmctfy

Lovefield is a relational query engine built on top of IndexedDB. It provides SQL-like syntax and works cross-browser (currently supporting Chrome 37+, Firefox 31+, and IE 10+).
https://github.com/google/lovefield

codefmt is a utility for syntax-aware code formatting. codefmt relies on codefmtlib for registration and management of formatting plugins.
https://github.com/google/vim-codefmt

Cppcheck is a static analysis tool for C/C++ code. Unlike C/C++ compilers and many other analysis tools it does not detect syntax errors in the code. Cppcheck primarily detects the types of bugs that the compilers normally do not detect. The goal is to detect only real errors in the code (i.e. have zero false positives).
http://cppcheck.sourceforge.net/

pugixml is a light-weight C++ XML processing library (it has XPath 1.0 implementation for complex data-driven tree queries).
http://pugixml.org/

Modern, powerful open source C++ class libraries for building network- and internet-based applications
http://pocoproject.org/

Multi-paradigm automated test framework for C++ and Objective-C (and, maybe, C). It is implemented entirely in a set of header files, but is packaged up as a single header for extra convenience.
https://github.com/philsquared/Catch

Some interesting C++ articles e.g. small size containers optimization using custom allocator
http://howardhinnant.github.io/

Gold linker
https://en.wikipedia.org/wiki/Gold_(linker)

Warp preprocessor
https://github.com/facebook/warp

LevelDB is a fast key-value storage library written at Google that provides an ordered mapping from string keys to string values.
https://github.com/google/leveldb

Kyoto Cabinet is a library of routines for managing a database.
http://fallabs.com/kyotocabinet/

UnQLite is a in-process software library which implements a self-contained, serverless, zero-configuration, transactional NoSQL database engine.
http://unqlite.org/

A Fast Key-Value Storage Engine Based on Hierarchical B+-Tree Trie
https://github.com/couchbase/forestdb

LMDB is an ultra-fast, ultra-compact, crash-proof key-value embedded data store
http://symas.com/mdb/

SQLite4 (with LSM - embedded database library for key-value data)
https://sqlite.org/src4/doc/trunk/www/index.wiki

FineDB.org - A high-performance noSQL database
http://www.finedb.org/

High performance JSON manipulation library
https://github.com/couchbase/subjson

Highly portable C system library
https://github.com/saprykin/plibsys

Memory optimal Small String Optimization implementation for C++
https://github.com/elliotgoodrich/SSO-23

c2xml is a tool that generates a XML representation of pre-processed ANSI C source code
http://c2xml.sourceforge.net/

Fake Function Framework (fff)
https://github.com/meekrosoft/fff