Open Source Windows HTTP Clients
Sort By:
HTTP Clients for Windows
View 2839 business solutionsBrowse free open source HTTP Clients and projects for Windows below. Use the toggles on the left to filter open source HTTP Clients by OS, license, language, programming language, and project status.
-
Try Google Cloud Risk-Free With $300 in CreditUse your credit across every product. Compute, storage, AI, analytics. When it runs out, 20+ products stay free. You only pay when you choose to.
-
Enterprise-grade ITSM, for every businessFreshservice is an intuitive, AI-powered platform that helps IT, operations, and business teams deliver exceptional service without the usual complexity. Automate repetitive tasks, resolve issues faster, and provide seamless support across the organization. From managing incidents and assets to driving smarter decisions, Freshservice makes it easy to stay efficient and scale with confidence.
-
1
Gopeed
High speed downloader that supports all platforms
Gopeed (full name Go Speed), a high-speed downloader developed by Golang + Flutter, supports (HTTP, BitTorrent, Magnet) protocol, and supports all platforms. This project is divided into two parts, the front end uses flutter, the back end uses Golang, and the two sides communicate through the http protocol. On the unix system, unix socket is used, and on the windows system, tcp protocol is used. -
2
aria2
aria2 is a lightweight multi-protocol & multi-source download utility
aria2 is a lightweight multi-protocol & multi-source command-line download utility. It supports HTTP/HTTPS, FTP, SFTP, BitTorrent and Metalink. aria2 can be manipulated via built-in JSON-RPC and XML-RPC interfaces. aria2 can download a file from multiple sources/protocols and tries to utilize your maximum download bandwidth. Really speeds up your download experience. aria2 doesn’t require much memory and CPU time. When disk cache is off, the physical memory usage is typically 4MiB (normal HTTP/FTP downloads) to 9MiB (BitTorrent downloads). CPU usage in BitTorrent with a download speed of 2.8MiB/sec is around 6%. aria2 supports The Metalink Download Description Format (aka Metalink v4), Metalink version 3, and Metalink/HTTP. Metalink offers the file verification, HTTP/FTP/SFTP/BitTorrent integration and various configurations for language, location, OS, etc. -
3
Jellyfin Android TV
Android TV Client for Jellyfin
Jellyfin Android TV is a Jellyfin client for Android TV, Nvidia Shield, and Amazon Fire TV devices. We welcome all contributions and pull requests! If you have a larger feature in mind please open an issue so we can discuss the implementation before you start. Jellyfin is the volunteer-built media solution that puts you in control of your media. Stream to any device from your own server, with no strings attached. Your media, your server, your way. Jellyfin enables you to collect, manage, and stream your media. Run the Jellyfin server on your system and gain access to the leading free-software entertainment system, bells and whistles included. -
4
Restfox
Offline-first web HTTP client
Offline-first web HTTP client. Package available through snap can be installed using sudo snap install restfox. There are precompiled binaries in the releases page. -
Our Free Plans just got better! | Auth0You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
-
5
bombardier
Fast cross-platform HTTP benchmarking tool written in Go
bombardier is an HTTP(S) benchmarking tool. It is written in Go programming language and uses excellent fast HTTP instead of Go's default HTTP library, because of its lightning-fast performance. With bombardier v1.1 and higher, you can now use the net/HTTP client if you need to test HTTP/2.x services or want to use a more RFC-compliant HTTP client. -
6
Axios
Promise based HTTP client for the browser and node.js
Axios is a promise-based HTTP client for the browser and Node.js. It makes sending asynchronous HTTP requests to REST endpoints and performing CRUD operations much easier. The Axios library can be used in plain JavaScript or with more advanced frameworks like Vue.js or React.js. -
7
r2
HTTP client, spiritual successor to request
Early in Node.js I wrote an HTTP client library called request. It evolved along with Node.js and eventually became very widely depended upon. A lot has changed since 2010 and I've decided to re-think what a simple HTTP client library should look like. This new library, r2, is a completely new approach from request. Rather than being built on top of the Node.js Core HTTP library and shimmed for the browser, r2 is built on top of the browser's Fetch API and shimmed for Node.js. APIs are meant to be used with async/await, which means they are based on promises. Being written to the Fetch API is a huge benefit for browser users. When running through browserify request is ~2M uncompressed and ~500K compressed. r2 is only 66K uncompressed and 16K compressed. -
8
go-mitmproxy
mitmproxy implemented with golang
go-mitmproxy is a Golang implementation of mitmproxy that supports man-in-the-middle attacks and parsing, monitoring, and tampering with HTTP/HTTPS traffic. Parses HTTP/HTTPS traffic and displays traffic details via a web interface. Supports a plugin mechanism for easily extending functionality. Various event hooks can be found in the examples directory. HTTPS certificate handling is compatible with mitmproxy and stored in the ~/.mitmproxy folder. If the root certificate is already trusted from the previous use of mitmproxy, go-mitmproxy can use it directly. Map Remote and Map Local support. -
9
plow
A high-performance HTTP benchmarking tool
Plow is an HTTP(S) benchmarking tool, written in Golang. It uses excellent fast HTTP instead of Go's default net/http due to its lightning-fast performance. Plow runs at specified connections (option -c) concurrently and real-time records summary statistics, histogram of execution time and calculates percentiles to display on Web UI and terminal. It can run for a set duration( option -d), for a fixed number of requests(option -n), or until Ctrl-C is interrupted. The implementation of real-time computing Histograms and Quantiles using stream-based algorithms inspired by Prometheus with low memory and CPU bounds. so it's almost no additional performance overhead for benchmarking. -
Custom VMs From 1 to 96 vCPUs With 99.95% UptimeLive migration and automatic failover keep workloads online through maintenance. One free e2-micro VM every month.
-
10
Fast Android Networking
A Complete Fast Android Networking Library that also supports HTTP/2
Fast Android Networking Library is a powerful library for doing any type of networking in Android applications which is made on top of OkHttp Networking Layer. Fast Android Networking Library takes care of each and everything. So you don't have to do anything, just make a request and listen for the response. The recent removal of HttpClient in Android Marshmallow(Android M) made other networking libraries obsolete. No other single library does and everything like making requests, downloading any type of file, uploading file, loading images from the network in ImageView, etc. There are some libraries but they are outdated. No other library provides a simple interface for doing all types of things in networking like setting priority, canceling, etc. As it uses Okio , No more GC overhead in android applications. Okio is made to handle GC overhead while allocating memory. Okio does some clever things to save CPU and memory. -
11
Hurl
Hurl, run and test HTTP requests with plain text
Hurl is a command line tool that runs HTTP requests defined in a simple plain text format. It can chain requests, capture values and evaluate queries on headers and body responses. Hurl is very versatile: it can be used for both fetching data and testing HTTP sessions. Hurl makes it easy to work with HTML content, REST / SOAP / GraphQL APIs, or any other XML / JSON-based APIs. Hurl can run HTTP requests but can also be used to test HTTP responses. Different types of queries and predicates are supported, from XPath and JSONPath on body response, to assert on status code and response headers. -
12
UBoat HTTP
HTTP Botnet
A proof-of-concept HTTP Botnet designed to replicate a full weaponized commercial botnet. This project should be used for authorized testing or educational purposes only. The main objective behind creating this offensive project was to aid security researchers and to enhance the understanding of commercial HTTP loader-style botnets. We hope this project helps to contribute to the malware research community and that people can develop efficient countermeasures. Written in C++ with no dependencies. Encrypted C&C communications. Persistence to prevent your control from being lost. Connection redundancy (Uses a fallback server address or domain). DDoS methods (TCP & UDP Flood). Task Creation System (Altering system HWID, Country, IP, OS.System). Remote command execution. Update and uninstall other malware. Download and execute other malware. Active as well as a passive key-logger. Enable Windows RDP. Plugin system for easy feature updates. -
13
rathole
A lightweight and high-performance reverse proxy for NAT traversal
A secure, stable and high-performance reverse proxy for NAT traversal, written in Rust. rathole, like frp and ngrok, can help to expose the service on the device behind the NAT to the Internet, via a server with a public IP. High Performance Much higher throughput can be achieved than frp, and more stable when handling a large volume of connections. Low Resource Consumption Consumes much fewer memory than similar tools. See Benchmark. The binary can be as small as ~500KiB to fit the constraints of devices, like embedded devices as routers. Security Tokens of services are mandatory and service-wise. The server and clients are responsible for their own configs. With the optional Noise Protocol, encryption can be configured at ease. No need to create a self-signed certificate! TLS is also supported. -
14
Jimp
An image processing library written entirely in JavaScript for Node
An image processing library for Node written entirely in JavaScript, with zero native dependencies. If you're using this library with TypeScript the method of importing slightly differs from JavaScript. Instead of using require, you must import it with ES6 default import scheme. If you're using a web bundles (webpack, rollup, parcel) you can benefit from using the module build of jimp. Using the module build will allow your bundler to understand your code better and exclude things you aren't using. If you're using webpack you can set process.browser to true and your build of jimp will exclude certain parts, making it load faster. The static Jimp.read method takes the path to a file, URL, dimensions, a Jimp instance or a buffer and returns a Promise. In some cases, you need to pass additional parameters with an image's URL. -
15
OAuth2 (Client)
An Elixir OAuth 2.0 Client Library
This library can be configured to handle encoding and decoding requests and responses automatically based on the accept and/or content-type headers. An Elixir OAuth 2.0 Client Library. This library can be configured to handle encoding and decoding requests and responses automatically based on the accept and/or content-type headers. The http client library used is tesla, the default adapter is Httpc, since it comes out of the box with every Erlang instance but you can easily change it to something better. -
16
Open Directory Downloader
Indexes open directories
Indexes open directories listings in 130+ supported formats, including FTP(S), Google Drive, Bhadoo, GoIndex, Go2Index (alternatives), Dropbox, Mediafire, GoFile, GitHub. Written in C# with .NET (Core), which means it is cross-platform! Downloading is not (yet) implemented, but is already possible when you use the resulting file into another tool (for most of the formats). When you are NOT using the self-contained releases, you need to install the latest/current Runtime version of .NET 7. -
17
RestSharp
Simple REST and HTTP API Client for .NET
RestSharp is probably the most popular HTTP client library for .NET. Featuring automatic serialization and deserialization, request and response type detection, variety of authentications and other useful features, it is being used by hundreds of thousands of projects. RestSharp passed over 32 million downloads on NuGet, with average daily download count of 10,000. It's being used by many popular OSS projects, including Roslyn and Swagger. The main purpose of RestSharp is to make synchronous and asynchronous calls to remote resources over HTTP. As the name suggests, the main audience of RestSharp are developers who use REST APIs. However, RestSharp can call any API over HTTP (but not HTTP/2), as long as you have the resource URI and request parameters that you want to send comply with W3C HTTP standards. RestSharp can take care of serializing the request body to JSON or XML and deserialize the response. It can also form a valid request URI based on different parameter kinds. -
18
urllib3
Python HTTP library with thread-safe connection pooling
urllib3 is a powerful, user-friendly HTTP client for Python. Much of the Python ecosystem already uses urllib3 and you should too. Thread safety, connection pooling. Client-side TLS/SSL verification. File uploads with multipart encoding. Helpers for retrying requests and dealing with HTTP redirects. Support for gzip, deflate, brotli, and zstd encoding. Proxy support for HTTP and SOCKS. 100% test coverage. Professional support for urllib3 is available as part of the Tidelift Subscription. Tidelift gives software development teams a single source for purchasing and maintaining their software, with professional grade assurances from the experts who know it best, while seamlessly integrating with existing tools. -
19
Echo HTML Viewer
Fast offline HTML viewer for opening local HTML files on Windows
Echo HTML Viewer is a lightweight desktop app for viewing local HTML files without a browser or internet connection. Designed for simplicity and privacy, it lets you open saved web pages, documentation, and archived content in a clean, distraction-free interface. Key features: • Open HTML files instantly • Drag & drop support • Fast startup and low resource usage • Fully offline — no telemetry, no tracking • No background services Use cases: • View saved websites offline • Read HTML documentation • Preview local HTML files quickly FREE version includes core functionality. 🚀 PRO version available: Upgrade directly inside the app using the built-in “Unlock PRO” button. © 2026 Echo Technology -
20
AIOHTTP
Asynchronous HTTP client/server framework for asyncio and Python
Asynchronous HTTP Client/Server for asyncio and Python. AIOHTTP supports both client and server side of HTTP protocol. A long awaited new feature is tracing client request life cycle to figure out when and why client request spends a time waiting for connection establishment, getting server response headers etc. Now it is possible by registering special signal handlers on every request processing stage. The main change is dropping yield from support and using async/await everywhere. Farewell, Python 3.4. You often want to send some sort of data in the URL’s query string. If you were constructing the URL by hand, this data would be given as key/value pairs in the URL after a question mark, e.g. httpbin.org/get?key=val. Requests allows you to provide these arguments as a dict, using the params keyword argument. aiohttp internally performs URL canonicalization before sending request. -
21
Faraday
Simple, but flexible HTTP client library, with support for backends
Faraday is an HTTP client library abstraction layer that provides a common interface over many adapters (such as Net::HTTP) and embraces the concept of Rack middleware when processing the request/response cycle. You probably don't want to use Faraday directly in your project, as it will lack an actual client library to perform requests. Instead, you probably want to have a look at Awesome Faraday for a list of available adapters. The best starting point is the Faraday Website, with its introduction and explanation. This library aims to support and is tested against the currently officially supported Ruby implementations. This means that, even without a major release, we could add or drop support for Ruby versions, following their EOL. Currently that means we support Ruby 2.6+. You can also install the faraday_middleware extension gem to access a collection of useful Faraday middleware. -
22
HTTPX
A next generation HTTP client for Python
HTTPX is a fully featured HTTP client for Python 3, which provides sync and async APIs, and support for both HTTP/1.1 and HTTP/2. HTTPX should currently be considered in beta. A 1.0 release is expected to be issued sometime in 2021. International domains and URLs, keep-alive and connection pooling, sessions with cookie persistence, browser-style SSL verification. Basic/digest authentication, elegant key/value cookies, automatic decompression. Automatic content decoding, unicode response bodies, multipart file uploads, HTTP(S) proxy support. Connection timeouts, streaming downloads, .netrc support, and chunked requests. For more advanced topics, see the Advanced Usage section, the async support section, or the HTTP/2 section. The Developer Interface provides a comprehensive API reference. -
23
Hetty
An HTTP toolkit for security research
Hetty is an HTTP toolkit for security research. It aims to become an open-source alternative to commercial software like Burp Suite Pro, with powerful features tailored to the needs of the infosec and bug bounty communities. Machine-in-the-middle (MITM) HTTP proxy, with logs and advanced search. HTTP client for manually creating/editing requests, and replay proxied requests. Intercept requests and responses for manual review (edit, send/receive, cancel) Scope support, to help keep work organized. Easy-to-use web-based admin interface. Project-based database storage, to help keep work organized. -
24
OpenAPI.NET
Object model for OpenAPI documents in .NET
The OpenAPI.NET SDK contains a useful object model for OpenAPI documents in .NET along with common serializers to extract raw OpenAPI JSON and YAML documents from the model. The OpenAPI.NET project holds the base object model for representing OpenAPI documents as .NET objects. Some developers have found the need to write processors that convert other data formats into this OpenAPI.NET object model. We'd like to curate that list of processors in this section of the readme. Converts standard .NET annotations ( /// comments ) emitted from your build (MSBuild.exe) into OpenAPI.NET document object. Converts the XML representation of the Entity Data Model (EDM) describing an OData Service into OpenAPI.NET document object. -
25
Requests for PHP
Requests for PHP is a humble HTTP request library
Requests is a HTTP library written in PHP, for human beings. It is roughly based on the API from the excellent Requests Python library. Requests is ISC Licensed (similar to the new BSD license) and has no dependencies, except for PHP 5.6+. Despite PHP’s use as a language for the web, its tools for sending HTTP requests are severely lacking. cURL has an interesting API, to say the least, and you can’t always rely on it being available. Sockets provide only low-level access and require you to build most of the HTTP response parsing yourself. Requests allows you to send HEAD, GET, POST, PUT, DELETE, and PATCH HTTP requests. You can add headers, form data, multipart files, and parameters with basic arrays, and access the response data in the same way. Requests uses cURL and fsockopen, depending on what your system has available, but abstracts all the nasty stuff out of your way, providing a consistent API.
