MVC framework making it easy to write realtime, collaborative applications that run in both Node.js and browsers.
 
Derby includes a powerful data synchronization engine called Racer that automatically syncs data among browsers, servers, and a database. Models subscribe to changes on specific objects, enabling granular control of data propagation without defining channels. Racer supports offline usage and conflict resolution out of the box, which greatly simplifies writing multi-user applications.
 
Derby applications load immediately and can be indexed by search engines, because the same templates render on both server and client. In addition, templates define bindings, which instantly update the view when the model changes and vice versa. Derby makes it simple to write applications that load as fast as a search engine, are as interactive as a document editor, and work offline.

MVC framework making it easy to write realtime, collaborative applications that run in both Node.js and browsers.

derby - MVC framework making it easy to write realtime, collaborative applications that run in both Node

BuntDB is a low-level, in-memory, key/value store in pure Go. It persists to disk, is ACID compliant, and uses locking for multiple readers and a single writer. It supports custom indexes and geospatial data. It's ideal for projects that need a dependable database and favor speed over data size.The desire to create BuntDB stems from the need for a new embeddable database for Tile38 and SummitDB.

BuntDB - Embeddable, in-memory key/value database for Go with custom indexing and geospatial support

GJSON is a Go package that provides a fast and simple way to get values from a json document. It has features such as one line retrieval, dot notation paths, iteration.

GJSON - JSON Parser for Go

Tile38 is a in-memory geolocation data store, spatial index, and realtime geofence. It supports a variety of object types including lat/lon points, bounding boxes, XYZ tiles, Geohashes, and GeoJSON. It supports spatial index with search methods such as Nearby, Within, and Intersects, Realtime geofencing through persistent sockets or webhooks and lot more.
 
Tile38 uses the Redis RESP protocol natively. Therefore most clients that support basic Redis commands will in turn support Tile38.

Tile38 is a  in-memory geolocation data store, spatial index, and realtime geofence. It supports a variety of object types including lat/lon points, bounding boxes, XYZ tiles, Geohashes, and GeoJSON. It supports spatial index with search methods such as Nearby, Within, and Intersects, Realtime geofencing through persistent sockets or webhooks and lot more. 

Tile38 - Geospatial database, spatial index, and realtime geofence

SummitDB is an in-memory, NoSQL key/value database. It persists to disk, uses the Raft consensus algorithm, is ACID compliant, and built on a transactional and strongly-consistent model. It supports custom indexes, geospatial data, JSON documents, and user-defined JS scripting.Under the hood it utilizes Finn, Redcon, BuntDB, GJSON, and Otto.

SummitDB - In-memory NoSQL database with ACID transactions, Raft consensus, and Redis API

NSQ is a realtime distributed messaging platform designed to operate at scale, handling billions of messages per day. It promotes distributed and decentralized topologies without single points of failure, enabling fault tolerance and high availability coupled with a reliable message delivery guarantee. It scales horizontally, without any centralized brokers. Built-in discovery simplifies the addition of nodes to the cluster.
 
<ul>
 <li>support distributed topologies with no SPOF</li>
 <li>horizontally scalable (no brokers, seamlessly add more nodes to the cluster)</li>
 <li>low-latency push based message delivery </li>
 <li>combination load-balanced and multicast style message routing</li>
 <li>excel at both streaming (high-throughput) and job oriented (low-throughput) workloads</li>
 <li>primarily in-memory (beyond a high-water mark messages are transparently kept on disk)</li>
 <li>runtime discovery service for consumers to find producers</li>
 <li>transport layer security (TLS)</li>
 <li>data format agnostic</li>
 <li>few dependencies (easy to deploy) and a sane, bounded, default configuration</li>
 <li>simple TCP protocol supporting client libraries in any language</li>
 <li>HTTP interface for stats, admin actions, and producers (no client library needed to publish)</li>
 <li>integrates with statsd for realtime instrumentation</li>
 <li>robust cluster administration interface</li>
</ul>

NSQ is a realtime distributed messaging platform designed to operate at scale, handling billions of messages per day. It promotes distributed and decentralized topologies without single points of failure, enabling fault tolerance and high availability coupled with a reliable message delivery guarantee. It scales horizontally, without any centralized brokers. Built-in discovery simplifies the addition of nodes to the cluster.

NSQ - A realtime distributed messaging platform in Go

Fixer.io is a free JSON API for current and historical foreign exchange rates published by the European Central Bank.The rates are updated daily around 4PM CET.

fixer.io - A foreign exchange rates and currency conversion API

Are you used to tools such as Cargo, npm, Composer, Nuget, Pip, Maven, Bundler, or other modern package managers? If so, Glide is the comparable Go tool. Manage your vendor and vendored packages with ease. Glide is a tool for managing the vendor directory within a Go package. This feature, first introduced in Go 1.5, allows each package to have a vendor directory containing dependent packages for the project. These vendor packages can be installed by a tool (e.g. glide), similar to go get or they can be vendored and distributed with the package.

Glide - Package Management for Golang

usql is a universal command-line interface for PostgreSQL, MySQL, Oracle, SQLite3, Microsoft SQL Server, and other databases.The below is a demonstration using usql with xo's booktest simple test database, showcasing the release version v0.5.0. In the demonstration, usql connects to a PostgreSQL database, executes some queries, with variable interpolation, connects to a SQLite3 database file, and does some more queries, before then connecting to a Microsoft SQL database and ending the session.

usql - universal command-line interface for SQL databases

Let's Encrypt client and ACME library written in Go.
 
Its feature include: 
<ul>
<li>Register with CA</li>
<li>Obtain certificates, both from scratch or with an existing CSR</li>
<li>Renew certificates</li>
<li>Revoke certificates</li>
<li>Robust implementation of all ACME challenges
<ul>
<li>HTTP (http-01)</li>
<li>TLS with Server Name Indication (tls-sni-01)</li>
<li>DNS (dns-01)</li>
</ul>
</li>
<li>SAN certificate support</li>
<li>Comes with multiple optional <a href="https://github.com/xenolf/lego/tree/master/providers/dns">DNS providers</a></li>
<li><a href="https://github.com/xenolf/lego/wiki/Writing-a-Challenge-Solver">Custom challenge solvers</a></li>
<li>Certificate bundling</li>
<li>OCSP helper function</li>
</ul>

Let's Encrypt client and ACME library written in Go.

Lego - Let's Encrypt client and ACME library

Service registry bridge for Docker.Registrator automatically registers and deregisters services for any Docker container by inspecting containers as they come online. Registrator supports pluggable service registries, which currently includes Consul, etcd and SkyDNS 2.

Service registry bridge for Docker. Registrator automatically registers and deregisters services for any Docker container by inspecting containers as they come online. Registrator supports pluggable service registries, which currently includes Consul, etcd and SkyDNS 2.

Registrator - Service registry bridge for Docker with pluggable adapters

A Go client for the NATS messaging system.

Go Nats - Golang client for NATS, the cloud native messaging system.

html5lib is a pure-python library for parsing HTML. It is designed to conform to the WHATWG HTML specification, as is implemented by all major web browsers.By default, the document will be an xml.etree element instance. Whenever possible, html5lib chooses the accelerated ElementTree implementation (i.e. xml.etree.cElementTree on Python 2.x). Two other tree types are supported: xml.dom.minidom and lxml.etree.

html5lib - Standards-compliant library for parsing and serializing HTML documents and fragments in Python

Zcash is an implementation of the "Zerocash" protocol. Based on Bitcoin's code, it intends to offer a far higher standard of privacy through a sophisticated zero-knowledge proving scheme that preserves confidentiality of transaction metadata. Bitcoin and most cryptocurrencies expose your entire payment history to the public. Zcash is the first open, permissionless cryptocurrency that can fully protect the privacy of transactions using zero-knowledge cryptography.
 
 Zcash also enables users to send public payments which work similarly to Bitcoin. With the support for both shielded and transparent addresses, users can choose to send Zcash privately or publicly. Zcash payments sent from a shielded address to a transparent address reveal the received balance, while payments from a transparent address to a shielded address protect the receiving value.

Zcash is an implementation of the "Zerocash" protocol. Based on Bitcoin's code, it intends to offer a far higher standard of privacy through a sophisticated zero-knowledge proving scheme that preserves confidentiality of transaction metadata. Bitcoin and most cryptocurrencies expose your entire payment history to the public. Zcash is the first open, permissionless cryptocurrency that can fully protect the privacy of transactions using zero-knowledge cryptography.

Zcash - Internet Money

LBRY is a protocol that provides a fully decentralized network for the discovery, distribution, and payment of data. It utilizes the LBRY blockchain as a global namespace and database of digital content. Blockchain entries contain searchable content metadata, identities, and rights and access rules. It also provides a data network consists of peers uploading and downloading data from other peers, possibly in exchange for payments, and a distributed hash table, used by peers to discover other peers.
 
LBRY is a free, open, and community-run digital marketplace. You own your data. You control the network. Indeed, you are the network.

LBRY is a protocol that provides a fully decentralized network for the discovery, distribution, and payment of data. It utilizes the LBRY blockchain as a global namespace and database of digital content. Blockchain entries contain searchable content metadata, identities, and rights and access rules. It also provides a data network consists of peers uploading and downloading data from other peers, possibly in exchange for payments, and a distributed hash table, used by peers to discover other peers.

Lbry - A fully decentralized network for distributing data

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