Modd is a developer tool that triggers commands and manages daemons in response to filesystem changes.If you use modd, you should also look at devd, a compact HTTP daemon for developers. Devd integrates with modd, allowing you to trigger in-browser livereload with modd.

modd - A flexible tool for responding to filesystem changes

rtsp-simple-server is a ready-to-use and zero-dependency server and proxy that allows users to publish, read and proxy live video and audio streams through various protocols like RTSP, RTMP, HLS. It publish and read live streams to the server. It acts as a proxy and serve streams from other servers or cameras, always or on-demand. 
 
Streams are automatically converted from a protocol to another. For instance, it's possible to publish a stream with RTSP and read it with HLS. Each stream can have multiple video and audio tracks, encoded with any codec, including H264, H265, VP8, VP9, MPEG2, MP3, AAC, Opus, PCM, JPEG. It can serve multiple streams at once in separate paths.

rtsp-simple-server is a ready-to-use and zero-dependency server and proxy that allows users to publish, read and proxy live video and audio streams through various protocols like RTSP, RTMP, HLS. It publish and read live streams to the server. It acts as a proxy and serve streams from other servers or cameras, always or on-demand. 





rtsp-simple-server - ready-to-use server and proxy that allows to read, publish and proxy video and audio streams with RTSP, RTMP, HLS 

ali is a load testing tool capable of performing real-time analysis, inspired by vegeta and jplot. It comes with an embedded terminal-based UI where you can plot the metrics in real-time, so lets you perform real-time analysis on the terminal.

ali - Generate HTTP load and plot the results in real-time

An ESMTP client and server library written in Go. It supports SMTP AUTH and PIPELINING, UTF-8 support for subject and message and LMTP support. 

go-smtp - An SMTP client & server library written in Go

Go-Diagrams is a fast and easy application diagrams. It is a is a loose port of diagrams.

Go Diagrams -  Create beautiful system diagrams with Go

Testing distributed systems under hard failures like network partitions and instance termination is critical, but it's also important we test them under less catastrophic conditions because this is what they most often experience. Comcast is a tool designed to simulate common network problems like latency, bandwidth restrictions, and dropped/reordered/corrupted packets.



Comcast - Simulating shitty network connections so you can build better systems.

Small Go package for fast high-level image processing using libvips via C bindings, providing a simple programmatic API. bimg is able to output images as JPEG, PNG and WEBP formats, including transparent conversion across them.

bimg - Small Go package for fast high-level image processing powered by libvips C library

 A tool similar to cloc, sloccount and tokei. For counting physical the lines of code, blank lines, comment lines, and physical lines of source code in many programming languages. Goal is to be the fastest code counter possible, but also perform COCOMO calculation like sloccount and to estimate code complexity similar to cyclomatic complexity calculators. 

Sloc, Cloc and Code: scc is a very fast accurate code counter with complexity calculations and COCOMO estimates written in pure Go

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

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

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