Qt is a cross-platform C++ application framework. Qt's primary feature is its rich set of widgets that provide standard GUI functionality.

libgepub is a GObject based library for handling and rendering epub documents.

SRPC is an enterprise-level RPC framework widely used by Tencent, Sogou and many small and medium-sized companies. It handles hundreds of millions of requests every day, mainly from search engines. It supports two common IDLs: protobuf and thrift, and implements several commonly used rpc protocols. It is also an open source version of Tencent's enterprise-level RPC protocol, tRPC.

The Symfony Crowdin Translation Provider Bridge provides Crowdin integration for Symfony Translation.

SuiteSparse:GraphBLAS is a complete implementation of the GraphBLAS standard, which defines a set of sparse matrix operations on an extended algebra of semirings using an almost unlimited variety of operators and types. When applied to sparse adjacency matrices, these algebraic operations are equivalent to computations on graphs. GraphBLAS provides a powerful and expressive framework for creating graph algorithms based on the elegant mathematics of sparse matrix operations on a semiring.

R is a language and environment for statistical computing and graphics, providing a wide variety of statistical and graphical techniques (linear and nonlinear modelling, statistical tests, time series analysis, classification, clustering, and so on).