Showing 620 open source projects for "middleware"

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    Plug Claude into your app's actual errors.

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  • 1
    Go CORS handler

    Go CORS handler

    Go net/http configurable handler to handle CORS requests

    Go CORS handler is a Go package that provides a configurable middleware handler for Cross-Origin Resource Sharing in net/http applications. It is designed to make CORS behavior explicit, predictable, and easy to insert into an existing HTTP handler chain. Developers can define which origins, methods, headers, and credentials are allowed, instead of scattering CORS logic across routes. The library also handles preflight requests, making it useful for APIs consumed by browsers, frontend apps, and third-party clients. ...
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  • 2
    Claude Relay Service

    Claude Relay Service

    Claude Code image, a one-stop open source transit service

    claude-relay-service is an open-source proxy and relay platform that enables unified access to multiple AI model providers through a single self-hosted gateway. The project is designed to help users centralize subscriptions and API usage for services such as Claude, OpenAI, Gemini, and related tools. It acts as a middleware layer that forwards requests while managing authentication, routing, and cost-sharing scenarios. The system is particularly useful for teams or communities that want to pool access or simplify integration with different AI backends. Its architecture supports compatibility with native client tools so existing workflows can continue to function without major modification. ...
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  • 3
    Practical ASP.NET Core

    Practical ASP.NET Core

    Practical samples of ASP.NET Core 10 RC

    practical-aspnetcore is a repository containing hundreds of sample projects, micro-applications, and code snippets across multiple versions of .NET Core (including 2.1, 3.1, 5.0, 6.0, 7.0, 8.0, 9.0, 10 RC) to illustrate real-world patterns, advanced topics, and features in .NET Core development. It is intended as a hands-on learning resource for building web APIs, middleware, authentication, real-time, microservices, etc.
    Downloads: 0 This Week
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  • 4
    Flags SDK

    Flags SDK

    Flags SDK by Vercel

    Flags SDK is an open source library designed for integrating feature flags into Next.js and SvelteKit applications. It allows developers to manage and implement feature flags, providing flexibility with integrations for any flag provider. The SDK supports AB testing, controlled rollouts, and experimentation, helping developers ship features faster and more efficiently. It features a simple, declarative API to define and use flags, making integration effortless. With Flags SDK, developers can...
    Downloads: 0 This Week
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  • 5
    morgan

    morgan

    HTTP request logger middleware for node.js

    This is a Node.js module available through the npm registry. Installation is done using the npm install command. Create a new morgan logger middleware function using the given format and options. The format argument may be a string of a predefined name, a string of a format string, or a function that will produce a log entry. The format function will be called with three arguments tokens, req, and res, where tokens is an object with all defined tokens, req is the HTTP request and res is the HTTP response. ...
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  • 6
    CIM

    CIM

    Distributed instant messaging system for developers

    CIM(CROSS-IM)A developer-oriented system, provides components to help developers build their own distributed instant messaging system that can be a horizontal scaling IM. CIM is an IM Instant messaging system, can be applied as a message push middleware. IOT Message transparent transmission middleware in massive connection scenarios. Provides flexible horizontal expansion and contraction according to the actual situation. The server automatically removes offline clients. Client reconnects automatically. You can use Google Protocol Bufferefficient codec. Its protocol supports message encryption. ...
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  • 7
    Gin Web Framework

    Gin Web Framework

    The fastest full-featured web framework for Go

    ...It’s got a very small memory footprint, no reflection and Radix tree based routing as well. For those looking for unprecedented speed and good productivity, Gin is the way to go. Gin is packed with great features, including middleware support, JSON validation and more. It gives an easy to use API for JSON, XML and HTML rendering, and can be extended easily with plenty of sample codes.
    Downloads: 0 This Week
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  • 8
    RESTHeart

    RESTHeart

    Rapid API Development with MongoDB

    RESTHeart is an open-source middleware that exposes MongoDB databases as a RESTful API, allowing developers to interact with MongoDB using HTTP-based queries instead of traditional drivers.
    Downloads: 3 This Week
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  • 9
    Dynamoose

    Dynamoose

    Dynamoose is a modeling tool for Amazon's DynamoDB

    Dynamoose is a modeling tool for Amazon's DynamoDB, providing a simple and schema-based solution to interact with DynamoDB tables in Node.js applications.
    Downloads: 0 This Week
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    Train ML Models With SQL You Already Know

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  • 10
    ShareDB

    ShareDB

    Realtime database backend based on Operational Transformation (OT)

    ...Realtime synchronization of any JSON document. Synchronous editing API with asynchronous eventual consistency. Projections to select desired fields from documents and operations. Middleware for implementing access control and custom extensions. Ideal for use in browsers or on the server. In-memory implementations of database and pub/sub for unit testing. Access to historic document versions. Realtime user presence syncing.
    Downloads: 23 This Week
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  • 11
    Laravel Framework

    Laravel Framework

    Elegant PHP web application framework with expressive syntax

    Laravel is a popular open-source PHP web framework designed for building modern web applications with an elegant and readable syntax. It emphasizes developer productivity, offering features like routing, Eloquent ORM, blade templating, and an extensive ecosystem of packages. Laravel makes common tasks like authentication, caching, and session management simple and intuitive, making it a top choice for PHP developers.
    Downloads: 9 This Week
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  • 12
    Echo

    Echo

    High performance, minimalist Go web framework

    ...Build robust and scalable RESTful API, easily organized into groups. Automatically install TLS certificates from Let's Encrypt. HTTP/2 support improves speed and provides better user experience. Many built-in middleware to use, or define your own. Middleware can be set at root, group or route level. Data binding for HTTP request payload, including JSON, XML or form-data. API to send variety of HTTP response, including JSON, XML, HTML, File, Attachment, Inline, Stream or Blob. Template rendering using any template engine. Customized central HTTP error handling. ...
    Downloads: 1 This Week
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  • 13
    TinyAuth

    TinyAuth

    The simplest way to protect your apps with a login screen

    TinyAuth is a lightweight authentication middleware designed to protect your self-hosted web services without forcing you to build a full login system from scratch. It integrates easily with reverse proxies and container orchestrators (like Traefik, Caddy, or Nginx) to gate access behind simple policies and supports multiple auth backends, giving you flexible control over who can reach your apps.
    Downloads: 0 This Week
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  • 14
    Scalatra

    Scalatra

    Tiny Scala high-performance, async web framework

    ...Its goal is to provide a minimal but expressive foundation for building web applications or REST APIs in Scala without the verbosity or steep learning curve of larger frameworks. It supports asynchronous request handling, routing, filters, content negotiation, and easy integration with templating, JSON libraries, and other web middleware. Being unopinionated, it lets developers pick their persistence, dependency injection, or templating layers, rather than enforcing heavy conventions. Scalatra is well-suited for services, APIs, or small–to–medium web applications where you want fine control over latency and structure, and it benefits from Scala’s type system and ecosystem.
    Downloads: 0 This Week
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  • 15
    Aleph

    Aleph

    Asynchronous streaming communication for Clojure

    ...However, it also allows for the handler function to return a Manifold deferred to represent an eventual response. This feature may not play nicely with synchronous Ring middleware, which modifies the response, but this can be easily fixed by reimplementing the middleware using Manifold's let-flow operator. The aleph.http/wrap-ring-async-handler helper can be used to convert async 3-arity Ring handler to an Aleph-compliant one.
    Downloads: 0 This Week
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  • 16
    OmniAuth

    OmniAuth

    OmniAuth is a flexible authentication system utilizing Rack middleware

    OmniAuth is a library that standardizes multi-provider authentication for web applications. It was created to be powerful, flexible, and do as little as possible. Any developer can create strategies for OmniAuth that can authenticate users via disparate systems. OmniAuth strategies have been created for everything from Facebook to LDAP. In order to use OmniAuth in your applications, you will need to leverage one or more strategies. These strategies are generally released individually as...
    Downloads: 0 This Week
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  • 17
    Kemal

    Kemal

    Fast, effective, simple web framework

    ...By default Kemal gzips most files, skipping only very small files, or those which don’t benefit from zipping. Websocket support. Request/Response context, easy parameter handling. Middleware support. Built-in JSON support. Built-in static file serving. Built-in view templating via ECR. Documentation. Before filters are evaluated before each request within the same context as the routes. They can modify the request and response. Since Crystal does not allow using variables in macro literals, you need to generate another helper macro to make the code easier to read and write. ...
    Downloads: 0 This Week
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  • 18
    Spring Cloud Alibaba

    Spring Cloud Alibaba

    One-stop solution for application development for Alibaba middleware

    ...With Spring Cloud Alibaba, you only need to add some annotations and a small amount of configurations to connect Spring Cloud applications to the distributed solutions of Alibaba, and build a distributed application system with Alibaba middleware. Flow control and service degradation: flow control, circuit breaking and system adaptive protection with Alibaba Sentinel. Service registration and discovery: instances can be registered with Alibaba Nacos and clients can discover the instances using Spring-managed beans. Supports Ribbon, the client side load-balancer via Spring Cloud Netflix. ...
    Downloads: 0 This Week
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  • 19
    Django

    Django

    The Web framework for perfectionists with deadlines

    Django is a high-level, free and open-source Python web framework founded on the Model–Template–View (MTV) pattern, designed to facilitate rapid development of secure, maintainable, and scalable database-driven websites. First, read docs/intro/install.txt for instructions on installing Django. Next, work through the tutorials in order (docs/intro/tutorial01.txt, docs/intro/tutorial02.txt, etc.). If you want to set up an actual deployment server, read docs/howto/deployment/index.txt for...
    Downloads: 34 This Week
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  • 20
    Keyv

    Keyv

    Simple key-value storage with support for multiple backends

    Keyv is a simple key-value storage system that supports multiple backends. It's designed to be a simple and consistent way to work with key-value stores.
    Downloads: 0 This Week
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  • 21
    Laravel Mail Preview

    Laravel Mail Preview

    A mail driver to quickly preview mail

    This package can display a small overlay whenever a mail is sent. The overlay contains a link to the mail that was just sent.
    Downloads: 0 This Week
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  • 22
    x402

    x402

    A payments protocol for the internet. Built on HTTP

    ...The system eliminates the need for accounts, sessions, or traditional payment rails by using cryptographic authorization and wallet-based transactions. Developers can integrate payment requirements into endpoints with minimal code using middleware and SDKs. Overall, x402 introduces a new economic layer to the web, enabling micropayments and pay-per-use services natively over HTTP.
    Downloads: 0 This Week
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  • 23
    E2M

    E2M

    E2M converts various file types (doc, docx, epub, html, htm, url

    ...The mirrored repository allows users to access the project’s codebase independently from its original hosting platform while preserving the development history and release artifacts. Systems like e2m often serve as middleware components that connect different software systems or facilitate data processing pipelines. By acting as a transformation layer, the software can support workflows such as converting data formats, integrating services, or bridging incompatible systems. The mirror hosted on SourceForge ensures that developers can continue accessing the project even if the primary repository becomes unavailable.
    Downloads: 0 This Week
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  • 24
    OpenNext

    OpenNext

    Open-source Next.js adapter for AWS

    This project packages Next.js applications to run natively on AWS’s serverless stack, mapping framework features onto services like Lambda, CloudFront, and S3. It translates routing, API handlers, and middleware into deployable artifacts, handling edge cases such as image optimization, ISR, and streaming responses. Static assets are uploaded to object storage and cached at the edge, while dynamic routes are executed in short-lived compute with cold-start-aware build settings. The adapter aims to preserve the Next.js developer experience—file-based routing, app/router features, and incremental builds—while producing infrastructure that scales automatically. ...
    Downloads: 0 This Week
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  • 25
    Laravel Auth

    Laravel Auth

    Laravel with user authentication, registration with email confirmation

    Laravel 10 with user authentication, registration with email confirmation, social media authentication, password recovery, and captcha protection. Uses offical [Bootstrap 4]. This also makes full use of Controllers for the routes, templates for the views, and makes use of middleware for routing. 5 Minutes Stand-up time. Laravel 10 with user authentication, registration with email confirmation, social media authentication, password recovery, and captcha protection. Uses official Bootstrap 4. This also makes full use of Controllers for the routes, templates for the views, and makes use of middleware for routing. ...
    Downloads: 0 This Week
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