 Restbed is a comprehensive and consistent programming model for building applications that require seamless and secure communication over HTTP, with the ability to model a range of business processes, designed to target mobile, tablet, desktop and embedded production environments. More in-depth examples can be found here. 

RestBed - Asynchronous RESTful functionality to C++11 applications

libvips is a demand-driven, horizontally threaded image processing library. Compared to similar libraries, libvips runs quickly and uses little memory. It has around 300 operations covering arithmetic, histograms, convolution, morphological operations, frequency filtering, colour, resampling, statistics and others. 
 
It supports a large range of numeric formats, from 8-bit int to 128-bit complex. Images can have any number of bands. It supports a good range of image formats, including JPEG, TIFF, PNG, WebP, FITS, Matlab, OpenEXR, PDF, SVG, HDR, PPM, CSV, GIF, Analyze, NIfTI, DeepZoom, and OpenSlide. It can also load images via ImageMagick or GraphicsMagick, letting it load formats like DICOM.

libvips is a demand-driven, horizontally threaded image processing library. Compared to similar libraries, libvips runs quickly and uses little memory. It has around 300 operations covering arithmetic, histograms, convolution, morphological operations, frequency filtering, colour, resampling, statistics and others. 

libvips - A fast image processing library with low memory needs

Boost provides free peer-reviewed portable C++ source libraries. Boost libraries are intended to be widely useful, and usable across a broad spectrum of applications. It supports String, Containers, Streams, Generic programming, Concurrent programming, Math, Memory and lot more.

Boost - CPP Library

A C++ diagnostic logging API that is simple to use, 100% type-safe, generic, infinitely-extensible, atomic, platform-independent, and extremely efficient. And, best of all, it upholds the spirit of C: you only pay for what you use. Pantheios is readily extended to use the existing transport mechanisms of feature-rich diagnostic logging libraries such as ACE, log4cpp, log4cplus, log4cxx. 

Pantheios - The C/C++ Logging Sweetspot

Redpanda is a streaming platform for mission critical workloads. It is Kafka API compatible so any client that works with Kafka should work out of the box with Redpanda. It does not have dependency on ZooKeeper, JVM. Redpanda is a new storage engine, optimized for streaming data, using a thread-per-core architecture focused on delivering stable tail-latencies. It transforms data inline with embedded WASM engine. 
 
Its features include:
<ul>
<li>Kafka API compatible&nbsp;</li>
<li>Up to 4x faster Kafka transactions</li>
<li>Automatic data and load rebalancing</li>
<li>Automatic hardware optimization</li>
<li>Unlimited partitions for extreme flexibility &nbsp; &nbsp;</li>
<li>Built-in HTTP support &nbsp; &nbsp;</li>
<li>Support for favorite Kafka tooling &nbsp; &nbsp;</li>
<li>Built-in Prometheus support &nbsp; &nbsp;</li>
<li>Native K8s operator</li>
<li>Automatic leadership rebalancing &nbsp; &nbsp;</li>
<li>TLS encryption in flight</li>
<li>Unlimited horizontal scaling &nbsp; &nbsp;</li>
</ul>

Redpanda is a streaming platform for mission critical workloads. It is Kafka API compatible so any client that works with Kafka should work out of the box with Redpanda. It does not have dependency on ZooKeeper, JVM. Redpanda is a new storage engine, optimized for streaming data, using a thread-per-core architecture focused on delivering stable tail-latencies. It transforms data inline with embedded WASM engine. 

Redpanda - A Kafka API compatible streaming platform for mission-critical workloads

OpenGL Mathematics (GLM) is a header only C++ mathematics library for graphics software based on the OpenGL Shading Language (GLSL) specifications. GLM provides classes and functions designed and implemented with the same naming conventions and functionality than GLSL so that anyone who knows GLSL, can use GLM as well in C++.

GLM - OpenGL Mathematics (GLM)

Nebula Graph is an open-source graph database capable of hosting super large-scale graphs with billions of vertices (nodes) and trillions of edges, with milliseconds of latency. It delivers enterprise-grade high performance to simplify the most complex data sets imaginable into meaningful and useful information. 
 
Nebula Graph is Symmetrically distributed, Separates Storage and computation, Horizontal scalability, Strong data consistency by RAFT protocol, Role-based access control for higher level security and lot more.

Nebula Graph is an open-source graph database capable of hosting super large-scale graphs with billions of vertices (nodes) and trillions of edges, with milliseconds of latency. It delivers enterprise-grade high performance to simplify the most complex data sets imaginable into meaningful and useful information. 

Nebula Graph - A distributed, scalable, lightning-fast graph database

A C++ library of designs, containing flexible implementations of common design patterns and idioms.

Loki - C++ library of common design patterns and idioms

A cloud-native database for building mission-critical applications. This repository contains the Community Edition of the YugaByte Database.YugaByte offers both SQL and NoSQL in a single, unified db. It is meant to be a system-of-record/authoritative database that applications can rely on for correctness and availability. It allows applications to easily scale up and scale down in the cloud, on-premises or across hybrid environments without creating operational complexity or increasing the risk of outages.
 
YugaByte DB is world's only distributed database that is both non-relational (supports Redis-compatible key-value & Cassandra-compatible flexible schema APIs) and relational (PostgreSQL-compatible distributed SQL API) at the same time. It is purpose-built to power fast-growing online services on public, private and hybrid clouds with transactional integrity, low latency, high throughput and multi-region scalability while also providing unparalleled data modeling freedom to application architects.

A cloud-native database for building mission-critical applications. This repository contains the Community Edition of the YugaByte Database.YugaByte offers both SQL and NoSQL in a single, unified db. It is meant to be a system-of-record/authoritative database that applications can rely on for correctness and availability. It allows applications to easily scale up and scale down in the cloud, on-premises or across hybrid environments without creating operational complexity or increasing the risk of outages.

YugaByte Database - Transactional, high-performance database for building internet-scale, globally-distributed applications

Easy Tink provides APIs that are simple and easy to use correctly. Most cryptographic operations such as data encryption, digital signatures, etc. can be done with only a few lines of code.Security Tink reduces common cryptographic pitfalls with user-centered design, careful implementation and code reviews, and extensive testing.
 
 At Google, Tink is already being used to secure data of many products such as AdMob, Google Pay, Google Assistant, Firebase, the Android Search App, etc.

Tink is a multi-language, cross-platform library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse.. Most cryptographic operations such as data encryption, digital signatures, etc. can be done with only a few lines of code. Tink reduces common cryptographic pitfalls with user-centered design, careful implementation and code reviews, and extensive testing.

Tink - Cryptographic library that provides an easy, secure, and agile API for common cryptographic tasks

Typesense is an open source, typo tolerant search engine that is optimized for instant sub-50ms searches, while providing an intuitive developer experience. 
 
Features: 
<ul>
<li>Typo Tolerance: Handles typographical errors elegantly, out-of-the-box.</li>
<li>Simple and Delightful: Simple to set-up, integrate with, operate and scale.</li>
<li>Blazing Fast: Built in C++. Meticulously architected from the ground-up for low-latency (&lt;50ms) instant searches.</li>
<li>Tunable Ranking: Easy to tailor your search results to perfection.</li>
<li>Sorting: Sort results based on a particular field at query time (helpful for features like "Sort by Price (asc)").</li>
<li>Faceting &amp; Filtering: Drill down and refine results.</li>
<li>Grouping &amp; Distinct: Group similar results together to show more variety.</li>
<li>Federated Search: Search across multiple collections (indices) in a single HTTP request.</li>
<li>Scoped API Keys: Generate API keys that only allow access to certain records, for multi-tenant applications.</li>
<li>Synonyms: Define words as equivalents of each other, so searching for a word will also return results for the synonyms defined.</li>
<li>Curation &amp; Merchandizing: Boost particular records to a fixed position in the search results, to feature them.</li>
<li>Raft-based Clustering: Setup a distributed cluster that is highly available.</li>
<li>Seamless Version Upgrades: As new versions of Typesense come out, upgrading is as simple as swapping out the binary and restarting Typesense.</li>
</ul>

Typesense is an open source, typo tolerant search engine that is optimized for instant sub-50ms searches, while providing an intuitive developer experience. 

Typesense - Fast, typo tolerant search engine for building delightful search experiences

Kodgen is a C++17 library based on libclang. It provides tools to parse C++ source files, extract data from it, and generate files from the parsed data. The C++ entities parsed in the current implementation are namespaces, structs/classes, non-member and member variables, non-member and member functions, enums and enum values.

Kodgen -  C++ Parser and Code generator 

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