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80 results tagged api  ✕   ✕
CLever Audio Plug-In https://cleveraudio.org/
06/07/2025 cluster icon
  • Gibberish : Gibberish is designed to be a fast audio API for the browser. It takes the low-level building blocks provided by genish.js and uses them to create hig...
  • Gibberish : Fast, JavaScript DSP library that creates JIT optimized audio callbacks using code generation techniques. It is designed to be a fast audio API for br...
  • Appwrite : Appwrite is an end-to-end backend server for Web, Mobile, Native, or Backend apps packaged as a set of Docker microservices. Appwrite abstracts the co...
  • dancer.js : dancer.js is a high-level audio API, usable with both Mozilla's Audio Data API and Webkit's Web Audio API with flash fallback, designed to make sweet ...
  • Alpaca : Given a web API, Generate client libraries in node, php, python, ruby

CLAP stands for CLever Audio Plug-in. It is an audio plug-in ABI which defines a standard for Digital Audio Workstations and audio plug-ins (synthesizers, audio effects, …) to work together.

audio plugin api daw
Gibberish https://github.com/gibber-cc/gibberish
12/04/2025 cluster icon
  • CLever Audio Plug-In : CLAP stands for CLever Audio Plug-in. It is an audio plug-in ABI which defines a standard for Digital Audio Workstations and audio plug-ins (synthesiz...
  • kimono : Turn websites into structured APIs from your browser in seconds
  • Cecilia : Cecilia is an audio signal processing environment aimed at sound designers. Cecilia mangles sound in ways unheard of. Cecilia lets you create your own...
  • Borderlands : The instrument may be performed by creating and destroying new clouds and dynamically moving them around the landscape. The landscape itself may also ...
  • Soundgrain : Soundgrain is a graphical interface where users can draw and edit trajectories to control granular sound synthesis. Soundgrain is written with Python/...

Gibberish is designed to be a fast audio API for the browser. It takes the low-level building blocks provided by genish.js and uses them to create higher-level synthesizers, effects, and sequencers. Gibberish processes each sample of each synthesis block one sample at a time, enabling a variety of effects not typically possible in JavaScript synthesis systems, most importantly single-sample feedback loops and audio-rate modulation of scheduling.

audio api browser synth synthesis
Appwrite https://appwrite.io/
10/12/2024 cluster icon
  • Postal : Postal is a complete and fully featured mail server for use by websites & web servers. Think Sendgrid, Mailgun or Postmark but open source and ready f...
  • Cool QL Cool : CoolQLCool (CQC) is an open source GraphQL server that allows you to turn websites into GraphQL APIs.
  • Prisma : Prisma turns your database into a powerful GraphQL API which you can either use to build your own GraphQL server or connect to it directly from the fr...
  • WireMock : Free and Open Source tool for building mock APIs. Create stable development environments, isolate yourself from flakey 3rd parties and simulate APIs t...
  • Izanami : Izanami is a shared configuration, feature flipping and A/B testing service perfectly well suited for micro services environment written in scala and ...

Appwrite is an end-to-end backend server for Web, Mobile, Native, or Backend apps packaged as a set of Docker microservices. Appwrite abstracts the complexity and repetitiveness required to build a modern backend API from scratch and allows you to build secure apps faster.

Using Appwrite, you can easily integrate your app with user authentication and multiple sign-in methods, a database for storing and querying users and team data, storage and file management, image manipulation, Cloud Functions, and more services.

backend server opensource docker microservice api authentication storage database
Mockoon https://github.com/mockoon/mockoon
06/11/2024 cluster icon
  • WireMock : Free and Open Source tool for building mock APIs. Create stable development environments, isolate yourself from flakey 3rd parties and simulate APIs t...
  • Motty : Motty provides the simpler way to test your client services. It is a web application which gives you ability to create your own custom responses. So y...
  • Cool QL Cool : CoolQLCool (CQC) is an open source GraphQL server that allows you to turn websites into GraphQL APIs.
  • gRPC : gRPC is a modern, open source remote procedure call (RPC) framework that can run anywhere. It enables client and server applications to communicate tr...
  • mountebank : mountebank is the first open source tool to provide cross-platform, multi-protocol test doubles over the wire. Simply point your application under tes...

Mockoon is the easiest and quickest way to design and run mock APIs. No remote deployment, no account required, free and open-source.

api testing mock opensource
Novu https://github.com/novuhq/novu
03/09/2023 cluster icon
  • ntfy : Send push notifications to your phone or desktop using PUT/POST
  • Novu : The open-source notifications infrastructure. A fully-featured microservice to send SMS, E-mail, Slack and Push notifications. Embeddable notification...
  • BlurHash : BlurHash is a compact representation of a placeholder for an image.
  • API.AI : With API.AI, you can create conversational scenarios within minutes, then build advanced dialogues to manage the conversation flow with the user. Once...
  • Bridgy : Bridgy pulls comments, likes, and reshares on social networks back to your web site. You can also use it to post to social networks - or comment, like...

Novu provides a unified API that makes it simple to send notifications through multiple channels, including In-App, Push, Email, SMS, and Chat. With Novu, you can create custom workflows and define conditions for each channel, ensuring that your notifications are delivered in the most effective way possible.

notification api service opensource
Val Town https://www.val.town/
14/07/2023 cluster icon
  • Quicktype : Quicktype generates types and helper code for reading JSON in C#, Swift, JavaScript, Flow, Python, TypeScript, Go, Rust, Objective-C, Kotlin, C++ and ...
  • StdLib : The Standard Library for Functions as a Service. Discover pre-built APIs, compose your own, build apps, and move your business faster than ever with n...
  • Bliss.js : Want to use Vanilla JS but find native APIs a bit unwieldy? Bliss is for you
  • Reset CSS : The goal of a reset stylesheet is to reduce browser inconsistencies in things like default line heights, margins and font sizes of headings, and so on...
  • semgrep : semgrep is a tool for easily detecting and preventing bugs and anti-patterns in your codebase. It combines the convenience of grep with the correctnes...

Val Town is a social website to write and run code. Vals are small JavaScript/TypeScript snippets that run on their servers. You can create APIs, scheduled functions, email yourself, and persist small pieces of data — all from the browser.

code repl cloud lamda functions api
WireMock https://wiremock.org/
28/06/2023 cluster icon
  • Motty : Motty provides the simpler way to test your client services. It is a web application which gives you ability to create your own custom responses. So y...
  • Postal : Postal is a complete and fully featured mail server for use by websites & web servers. Think Sendgrid, Mailgun or Postmark but open source and ready f...
  • Appwrite : Appwrite is an end-to-end backend server for Web, Mobile, Native, or Backend apps packaged as a set of Docker microservices. Appwrite abstracts the co...
  • Cool QL Cool : CoolQLCool (CQC) is an open source GraphQL server that allows you to turn websites into GraphQL APIs.
  • npoint.io : JSON storage bins with schema validation

Free and Open Source tool for building mock APIs. Create stable development environments, isolate yourself from flakey 3rd parties and simulate APIs that don't exist yet.

api mock server opensource
Appsmith https://github.com/appsmithorg/appsmith
01/03/2022 cluster icon
  • Quicktype : Quicktype generates types and helper code for reading JSON in C#, Swift, JavaScript, Flow, Python, TypeScript, Go, Rust, Objective-C, Kotlin, C++ and ...
  • Prisma : Prisma turns your database into a powerful GraphQL API which you can either use to build your own GraphQL server or connect to it directly from the fr...
  • ActiveJS : ActiveJS is a JavaScript application framework that provides local and REST based data modeling and pure DOM view construction with back button and hi...
  • Svelte : Svelte is a radical new approach to building user interfaces. Whereas traditional frameworks like React and Vue do the bulk of their work in the brows...
  • localForage : localForage is a handy library that improves the offline experience of your web app by using asynchronous storage (via IndexedDB or WebSQL where avail...
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Turn any datasource into an internal app in minutes. Appsmith lets you drag-and-drop UI components to build pages, connect to any API, database or GraphQL source and write logic with JavaScript objects.

graphql ui administration api database javascript
Supabase https://supabase.com/
19/11/2021 cluster icon
  • Appwrite : Appwrite is an end-to-end backend server for Web, Mobile, Native, or Backend apps packaged as a set of Docker microservices. Appwrite abstracts the co...
  • Real time event sources : A directory of high quality real-time event sources.
  • CryptPad : CryptPad is the Zero Knowledge realtime collaborative editor. Encryption carried out in your web browser protects the data from the server, the cloud ...
  • localForage : localForage is a handy library that improves the offline experience of your web app by using asynchronous storage (via IndexedDB or WebSQL where avail...
  • OpenKeyval : OpenKeyval is a completely open key-value data store, exposed as a drop-dead simple web service. The goal is to make this a very easy way to persist d...
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Supabase is an open source Firebase alternative. Create a backend in less than 2 minutes. Start your project with a Postgres Database, Authentication, instant APIs, realtime subscriptions and Storage.

postgresql realtime authentication api storage
AI21 Studio https://www.ai21.com/studio
15/08/2021 cluster icon
  • Gluon API : A clear, concise, simple yet powerful and efficient API for deep learning.
  • Alpaca : Given a web API, Generate client libraries in node, php, python, ruby
  • Wordoid : Wordoids are made-up words. They look unique and sound natural. They are great for naming new things.
  • Swagger : Swagger is a powerful open source framework backed by a large ecosystem of tools that helps you design, build, document, and consume your RESTful APIs...
  • Improv : A model-backed generative text grammar tool for javascript. Improv is similar to Tracery in that it can generate random, procedurally generated text r...

AI21 Studio allows users to generate text completions for an input prompt using Jurassic-1 language models.

api naturallanguage text generator machinelearning
Quicktype https://quicktype.io/
06/06/2021 cluster icon
  • Appsmith : Turn any datasource into an internal app in minutes. Appsmith lets you drag-and-drop UI components to build pages, connect to any API, database or Gra...
  • Data Science Toolkit : A collection of the best open data sets and open-source tools for data science, wrapped in an easy-to-use REST/JSON API with command line, Python and ...
  • Falcor : Falcor is the innovative data platform that powers the Netflix UIs. Falcor allows you to model all your backend data as a single Virtual JSON object o...
  • npoint.io : JSON storage bins with schema validation
  • localForage : localForage is a handy library that improves the offline experience of your web app by using asynchronous storage (via IndexedDB or WebSQL where avail...

Quicktype generates types and helper code for reading JSON in C#, Swift, JavaScript, Flow, Python, TypeScript, Go, Rust, Objective-C, Kotlin, C++ and more. Customize online with advanced options, or download a command-line tool.

json graphql code developer api C# swift go javascript python
FastAPI https://fastapi.tiangolo.com/
31/03/2021 cluster icon
  • Eve : Eve is an open source Python REST API framework designed for human beings. It allows to effortlessly build and deploy highly customizable, fully featu...
  • Data Science Toolkit : A collection of the best open data sets and open-source tools for data science, wrapped in an easy-to-use REST/JSON API with command line, Python and ...
  • XgeneCloud : XgeneCloud is an API Framework platform that instantly generates REST / GraphQL APIs on any SQL database. Supports MySQL, PostgreSQL, MSSQL, SQLite &...
  • Cliquet : Cliquet is a toolkit to ease the implementation of HTTP microservices, such as data-driven REST APIs.
  • Frisby.js : Frisby is a REST API testing framework built on node.js and Jasmine that makes testing API endpoints easy, fast, and fun. Read below for a quick overv...

FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints.

python rest api framework
Hoppscotch https://github.com/hoppscotch/hoppscotch
11/01/2021 cluster icon
  • htty : htty is a console application for interacting with web servers. It’s a fun way to explore web APIs and to learn the ins and outs of HTTP.
  • mountebank : mountebank is the first open source tool to provide cross-platform, multi-protocol test doubles over the wire. Simply point your application under tes...
  • Siege : Siege is an http load testing and benchmarking utility. It was designed to let web developers measure their code under duress, to see how it will stan...
  • Motty : Motty provides the simpler way to test your client services. It is a web application which gives you ability to create your own custom responses. So y...
  • YSlow for PhantomJS : YSlow for PhantomJS
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A free, online, open source API request builder

api web http tool
httpbin.org https://httpbin.org/
01/07/2020 cluster icon
  • Mockbin : Mockbin allows you to generate custom endpoints to test, mock, and track HTTP requests & responses between libraries, sockets and APIs.
  • mountebank : mountebank is the first open source tool to provide cross-platform, multi-protocol test doubles over the wire. Simply point your application under tes...
  • Smocker : Smocker (server mock) is a simple and efficient HTTP mock server. Smocker exposes a configuration user interface and a configuration api to register n...
  • Polly.JS : Polly.JS is a standalone, framework-agnostic JavaScript library that enables recording, replaying, and stubbing HTTP interactions. Polly taps into nat...
  • Mock Service Worker : Mock by intercepting requests on the network level. Seamlessly reuse the same mock definition for testing, development, and debugging.

A simple HTTP Request & Response Service.

mock http api test
RSS Box https://github.com/stefansundin/rssbox
23/06/2020 cluster icon
  • Hoppscotch : A free, online, open source API request builder
  • DuckRails : DuckRails is a development tool. Its main purpose is to allow developers to quickly mock API endpoints that for many possible reasons can't reach at a...
  • Page2RSS : Page2RSS is a service that helps you monitor web sites that do not publish feeds. It will check any web page for updates and deliver them to your favo...
  • htty : htty is a console application for interacting with web servers. It’s a fun way to explore web APIs and to learn the ins and outs of HTTP.
  • mountebank : mountebank is the first open source tool to provide cross-platform, multi-protocol test doubles over the wire. Simply point your application under tes...
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This app uses the API of other websites and gives you an RSS feed in return. Quick and simple.

rss api tool
Buf https://buf.build/
22/06/2020 cluster icon
  • htty : htty is a console application for interacting with web servers. It’s a fun way to explore web APIs and to learn the ins and outs of HTTP.
  • Hadolint : A smarter Dockerfile linter that helps you build best practice Docker images. The linter is parsing the Dockerfile into an AST and performs rules on t...
  • how2 : stackoverflow from the terminal. how2 finds the simplest way to do something in a unix shell. It's like man, but you can query it in natural language.
  • Batect : Batect allows you to define your development tasks (building, running, testing, linting and more) in terms of one or more Docker containers, run those...
  • xh : xh is a friendly and fast tool for sending HTTP requests. It reimplements as much as possible of HTTPie's excellent design, with a focus on improved p...
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A CLI tool to help working with Protocol Buffers.
Buf currently contains:

  • A linter that enforces good API design choices and structure.
  • A breaking change detector that enforces compatibility at the source code or wire level.
  • A configurable file builder that produces Images, our extension of FileDescriptorSets.
api protobuf lint build cli tool
XgeneCloud https://xgenecloud.com/
17/06/2020 cluster icon
  • FastAPI : FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints.
  • Frisby.js : Frisby is a REST API testing framework built on node.js and Jasmine that makes testing API endpoints easy, fast, and fun. Read below for a quick overv...
  • Eve : Eve is an open source Python REST API framework designed for human beings. It allows to effortlessly build and deploy highly customizable, fully featu...
  • Appsmith : Turn any datasource into an internal app in minutes. Appsmith lets you drag-and-drop UI components to build pages, connect to any API, database or Gra...
  • GatsbyJS : Gatsby is a modern framework for blazing fast websites, made with React and GraphQL.

XgeneCloud is an API Framework platform that instantly generates REST / GraphQL APIs on any SQL database.

  • Supports MySQL, PostgreSQL, MSSQL, SQLite & MariaDb.
  • Comes with a builtin GUI Database Client and API Client.
  • Host generated APIs as Serverless Functions on any Cloud Platform.
api rest graphql framework platform sql serverless
BlurHash https://blurha.sh/
23/04/2020 cluster icon
  • picfit : picfit is a reusable Go server to manipulate images (resize, thumbnail, etc.). It will act as a proxy on your storage engine and will be served ideall...
  • Novu : Novu provides a unified API that makes it simple to send notifications through multiple channels, including In-App, Push, Email, SMS, and Chat. With N...
  • Caire : Caire is a content aware image resize library
  • Matrix : Matrix is an open standard for decentralised communication, providing simple HTTP APIs and open source reference implementations for securely distribu...
  • Appwrite : Appwrite is an end-to-end backend server for Web, Mobile, Native, or Backend apps packaged as a set of Docker microservices. Appwrite abstracts the co...
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BlurHash is a compact representation of a placeholder for an image.

image api placeholder opensource
Openframe https://openframe.io/
14/03/2020 cluster icon
  • kimono : Turn websites into structured APIs from your browser in seconds
  • Collage.js : Collage.js brings together many public APIs, along a method of presenting media within a limitless two-dimesional space to create memorable experience...
  • OpenCalais : Calais is a rapidly growing toolkit of capabilities that allow you to readily incorporate state-of-the-art semantic functionality within your blog, co...
  • DERI Pipes : Inspired by Yahoo's Pipes, DERI Pipes is an engine and graphical environment for general Web Data transformations and Mashup.
  • Anything to Triples : Anything To Triples (any23) is a library, a web service and a command line tool that extracts structured data in RDF format from a variety of Web docu...

Openframe is an open source platform for artists, curators and art enthusiasts to share, discover and display digital art.

Openframe is free. Anyone can set up a frame using an HDMI display and a Raspberry Pi.

Openframe is a collaborative, on-going project. The platform consists of an API, a web app, and software for the RPi that currently supports images, video, web-based artwork, and shaders. Our goal is to create a system that is accessible and extensible, allowing artists to easily add support for new digital formats.

art display api web raspberrypi
Real time event sources https://github.com/todsac/eventsources
06/02/2020 cluster icon
  • Horizon : RethinkDB Horizon is an open-source developer platform for building realtime, scalable web apps. It is built on top of RethinkDB, and allows app devel...
  • ReactPHP : Event-driven, non-blocking I/O with PHP. React is a low-level library for event-driven programming in PHP. At its core is an event loop, on top of whi...
  • Supabase : Supabase is an open source Firebase alternative. Create a backend in less than 2 minutes. Start your project with a Postgres Database, Authentication,...
  • Gibberish : Fast, JavaScript DSP library that creates JIT optimized audio callbacks using code generation techniques. It is designed to be a fast audio API for br...
  • Mapstraction : A javascript library to hide differences between mapping APIs.
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A directory of high quality real-time event sources.

list realtime api events
page 1 / 4
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