Open Source HTTP Clients
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HTTP Clients
View 8878 business solutionsBrowse free open source HTTP Clients and projects below. Use the toggles on the left to filter open source HTTP Clients by OS, license, language, programming language, and project status.
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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. -
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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. -
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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. -
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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. -
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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. -
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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. -
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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. -
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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. -
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Feign
Make writing Java http clients easier
Feign is a Java to HTTP client binder that was built primarily to make writing Java http clients easier. Inspired by previous projects Retrofit, JAXRS-2.0 and WebSocket, Feign was designed to reduce the complexity that is often involved in binding the Denominator uniformly to HTTP APIs, no matter the ReSTfulness. Feign works by processing annotations into a templatized request, to which arguments are applied in a straightforward manner before output. While it may only support text-based APIs, it simplifies system aspects dramatically and makes it much easier to unit test your conversions. Feign makes use of great tools like Jersey and CXF for writing Java clients for ReST or SOAP services. It also lets you write your own code on top of http libraries, and connects your code to http APIs with little overhead. -
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Guzzle
An extensible PHP HTTP client
Guzzle is a PHP HTTP client that makes it easy to send HTTP requests and trivial to integrate with web services. Simple interface for building query strings, POST requests, streaming large uploads, streaming large downloads, using HTTP cookies, uploading JSON data, etc... Can send both synchronous and asynchronous requests using the same interface. Uses PSR-7 interfaces for requests, responses, and streams. This allows you to utilize other PSR-7 compatible libraries with Guzzle. Abstracts away the underlying HTTP transport, allowing you to write environment and transport agnostic code; i.e., no hard dependency on cURL, PHP streams, sockets, or non-blocking event loops. Middleware system allows you to augment and compose client behavior. -
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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. -
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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. -
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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. -
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HTTP Shortcuts for Android
Android app to create home screen shortcuts
A simple Android app that allows you to create shortcuts that can be placed on your home screen. Each shortcut, when clicked, triggers an HTTP request, with the possibility to process and display the response in various ways. Run arbitrary JavaScript before & after execution, which allows for lots of customization with features such as compute values such as timestamps, random numbers, UUIDs, hashes, HMACs, base64, etc. Parse JSON or XML and extract data from them. Show toast message or message dialogs. Vibrate or play notification sounds. Trigger other shortcuts to chain multiple HTTP requests. Interact with other devices and services by sending TCP or UDP packets, MQTT messages or using Wake-on-LAN. -
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Interactsh
An OOB interaction gathering server and client library
Interactsh is an open-source tool for detecting out-of-band interactions. It is a tool designed to detect vulnerabilities that cause external interactions. Interactsh Cli client requires go1.17+ to install successfully. interactsh-client with -sf, -session-file flag can be used store/read the current session information from user defined file which is useful to resume the same session to poll the interactions even after the client gets stopped or closed. Running the interactsh-client in verbose mode (v) to see the whole request and response, along with an output file to analyze afterwards. Using the server flag, interactsh-client can be configured to connect with a self-hosted Interactsh server, this flag accepts single or multiple server separated by comma. Default servers are subject to change/rotate/down at any time, thus we recommend using a self-hosted interactsh server if you are experiencing issues with the default server. -
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Just
Swift HTTP for Humans
Just is a client-side HTTP library inspired by python-requests, HTTP for Humans. URL queries, custom headers, form, JSON HTTP body. Redirect control. Multipart file upload along with form values. Basic/digest authentication, cookies, timeouts. Synchronous/asynchronous requests. Upload/download progress tracking for asynchronous requests. Link headers and friendly accessible results. -
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Promxy
An aggregating proxy to enable HA prometheus
Promxy is a prometheus proxy that makes many shards of prometheus appear as a single API endpoint to the user. This significantly simplifies operations and use of prometheus at scale (when you have more than one prometheus host). Promxy delivers this unified access endpoint without requiring any sidecars, custom-builds, or other changes to your prometheus infrastructure. Prometheus itself provides no real HA/clustering support. As such the best-practice is to run multiple (e.g N) hosts with the same config. Similarly prometheus has no real built-in query federation, which means that you end up with N sources in grafana which is (1) confusing to grafana users and (2) has no support for aggregation across the sources. Promxy enables an HA prometheus setup by "merging" the data from the duplicate hosts (so if there is a gap in one, promxy will fill with the other). In addition Promxy provides a single datasource for all promql queries. -
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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. -
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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. -
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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. -
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Trafexia
Mobile Traffic Interceptor
Trafexia is a lightweight web application designed to visualize real-time and historical transportation data, such as traffic flows, transit schedules, or route usage, with clean dashboards and map overlays that help users and analysts interpret mobility patterns quickly. It integrates data streams from APIs, CSV feeds, or sensor inputs and processes them into intuitive visualizations including flow diagrams, heatmaps, time series charts, and route performance boards. The UI balances rich visuals with clarity, enabling quick switches between granular road-level insights and broader corridor analytics without overwhelming the viewer. It also supports filtering by time ranges, vehicle types, or geographic zones so analysts can drill into peak congestion periods or specific transit routes. -
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cpprestsdk
Microsoft project for cloud-based client-server communication
The C++ REST SDK is a Microsoft project for cloud-based client-server communication in native code using a modern asynchronous C++ API design. This project aims to help C++ developers connect to and interact with services. cpprestsdk is in maintenance mode and we do not recommend its use in new projects. We will continue to fix critical bugs and address security issues. Once you have the library, look at our tutorial to use the http_client. It walks through how to setup a project to use the C++ Rest SDK and make a basic Http request. HTTP client/server, JSON, URI, asynchronous streams, WebSockets client, oAuth. A powerful model for composing asynchronous operations based on C++ 11 features. Windows desktop, Windows Store (UWP), Linux, OS X, Unix, iOS, and Android. Support for Visual Studio 2015 and 2017 with debugger visualizers. -
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hackney
simple HTTP client in Erlang
hackney is an HTTP client library for Erlang. No message passing (except for asynchronous responses): response is directly streamed to the current process and state is kept in a #client{} record. Binary streams, SSL support, keepalive handling, basic authentication. Stream the response and the requests, fetch a response asynchronously, multipart support (streamed or not), and chunked encoding support. It can send files using the sendfile API. Optional socket pool, REST syntax, hackney, Method(URL) (where a method can get, post, put, delete, ...) -
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oha
HTTP load generator, inspired by rakyll/hey with tui animation
oha is a tiny program that sends some load to a web application and shows real-time tui inspired by rakyll/hey. This program is written in Rust and powered by tokio and beautiful tui by tui-rs. -q option works differently from rakyll/hey. It's set the overall query per second instead of for each worker. -
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POCO C++ Libraries
Cross-platform C++ libraries with a network/internet focus.
NOTE: Current source code as well as bugs/patches are on GitHub: https://github.com/pocoproject/poco/ C++ class libraries for network-centric, portable applications, integrated perfectly with the C++ Standard Library. Includes network protocols (Sockets, HTTP, FTP, SMTP, POP3, etc.), SQL database access and XML parsing. Licensed under Boost license.
Open Source HTTP Clients Guide
Open source HTTP clients areprograms that enable users to send and receive data over the internet. These clients use Hypertext Transfer Protocol (HTTP) to communicate with web server applications. The source code of open source HTTP clients is usually available for free, allowing users to customize and modify the program as they like.
Open source HTTP client programs are typically designed to work with multiple protocols, such as FTP, Gopher, Telnet or SSH. This makes them ideal for many different types of applications and environments since they provide a single solution for managing different kinds of network connections. Additionally, open source HTTP clients can often be more secure than commercially-available solutions due to their ability to be tweaked according to individual needs and preferences.
When it comes to performance, most open source HTTP clients feature algorithms that minimize the number of requests sent out by the system in order to improve speed and reliability. Furthermore, most open source products are built with extensibility in mind meaning they offer an array of options which allow developers to customize how their product works or behaves when certain conditions are met – allowing them better control over their own projects' performance as well as security levels since many open sources have publicly visible code.
On top of this, popular open-source HTTP clients come packed with a wide range of features including support for cookies management; caching policies; SSL/TLS support; proxy control; content encoding settings; MIME type detection; character sets handling; parsing & formatting capabilities etc., thus making them suitable for creating powerful web-based applications that efficiently interact with remote servers and data stores over the Internet without having complex custom coding requirements from scratch..
What Features Do Open Source HTTP Clients Provide?
- HTTP Requests: Open source HTTP clients provide support for various types of requests, such as GET, POST, HEAD, PUT and DELETE. In addition to standard requests, some clients also offer support for other custom requests.
- Authentication: Most open source HTTP clients allow authentication using Basic or Digest authentication. This allows user credentials to be sent over a secured connection without revealing the password in plain text.
- Proxy Servers: Open source clients can use proxy servers when making connections. This enables them to access resources from behind a firewall or through an anonymizing network (such as Tor).
- Cookies: Some open source clients are able to save cookies that are received from web servers and re-submit them on subsequent requests. This makes it easier for sites to remember user preferences and settings between visits.
- SSL/TLS Support: Many open source clients include support for secure connections via SSL (Secure Sockets Layer) or TLS (Transport Layer Security). This ensures that all data transmitted between the client and server is encrypted, preventing eavesdropping by third parties.
- Data Compression: Most open source HTTP clients have the ability to negotiate data compression with web servers they make connections with. Compression reduces the size of transmitted data which makes downloading files faster and more efficient use of bandwidth.
Types of Open Source HTTP Clients
- cURL: cURL is an open source command-line tool and library for transferring data from or to a server using various protocols, such as HTTP, FTP, IMAP, SMTP, and SCP. It can be used to quickly download web pages or other files from remote servers as well as uploading local files to remote servers.
- libcurl: This is an open source C-based library that allows developers to write their own client applications that can make HTTP requests. It provides a wide range of features like supporting various transfer protocols (HTTP/2 and HTTPS) and authentication methods like NTLM. It also supports Advanced Encryption Standard (AES) encryption for secure transactions.
- Apache HttpClient: This is an open source java library which provides high level client API for interacting with web servers via the Hypertext Transfer Protocol (HTTP). It enables developers to easily send GET/POST requests along with parameter manipulation, cookies handling and authorization capabilities.
- Unirest: Unirest is an open-source lightweight Java library which facilitates making HTTP calls by providing objects representing responses without having the need for manual parsing. Using this library, it becomes easier for developers to build HTTP clients in different languages like nodejs, Java, PHP etc., quickly and efficiently using fewer lines of code compared to traditional approaches.
- Requests: Requests is a Python based HTTP Client Library which allows engineers to make easy and quick use of sending all kinds of HTTP requests including GET/POST/PUT etc., even though it doesn't include support for streaming large uploads like some other libraries do.
What Are the Advantages Provided by Open Source HTTP Clients?
- Cost Savings: Open source clients are free to download and use. This eliminates the need to purchase licenses or licenses from third-party vendors, resulting in significant cost savings over time.
- Flexibility: Customization is easy with open source clients since developers have access to the code and can modify it as needed. This provides added flexibility when developing applications, allowing for a wider choice of features and functionalities.
- Security: Open source clients employ multiple layers of security to ensure reliable data transfer and communication between two systems. These measures help protect against malicious attacks like malware and unauthorized eavesdropping on sensitive information.
- Ease of Use: Simplicity is key with many open source clients, making them user-friendly without sacrificing efficiency or effectiveness. The intuitive design makes programming tasks easier while providing an enjoyable experience along the way.
- Scalability: As new technologies become available, open source solutions are easily scalable by leveraging its adaptation capabilities. This allows users to take advantage of advancements without needing major overhauls down the line.
Types of Users That Use Open Source HTTP Clients
- Web Developers: These users typically use open source HTTP clients for web development. They may need to pull data from a remote server, debug issues in the network environment, create custom APIs and manage traffic on their websites.
- System Administrators: Open source HTTP clients are often used by system administrators who need to troubleshoot problems with a web server or website, test applications on either side of a firewall or generate reports related to performance.
- Network Engineers: Network engineers use these tools to diagnose problems with networks, such as finding bottlenecks causing slow speeds or authentication errors causing connection issues.
- Security Analysts: Security analysts often rely on open source HTTP clients because they can inspect requests and responses between two systems without disturbing the underlying network infrastructure.
- DevOps Professionals: These professionals often use the same types of tools as security analysts since they have similar tasks of inspecting requests and responses between different servers in order to monitor performance, prevent attacks and scale capacity quickly when needed.
How Much Do Open Source HTTP Clients Cost?
Open source HTTP clients are completely free, meaning there is no cost associated with them. This is part of what makes open source software so attractive; its free availability for all to use and modify as needed. The only cost associated with an open source HTTP client would be the time and effort spent into setting it up and configuring it properly. Additionally, depending on the open source license that has been applied to the software, you may need to adhere to certain rules when sharing any modifications made to the code or making any derived works. It should also be noted that if you hire a professional developer to assist in installing and configuring the open source client, then you will be responsible for paying their fees as well.
What Do Open Source HTTP Clients Integrate With?
Open source http clients can integrate with a variety of types of software. This includes applications such as web browsers and content management systems, which allow users to view and interact with websites over the internet. Other types of software that can interface with open source http clients include server-side scripting languages like PHP, client-side development frameworks such as AngularJS, and libraries for routing requests and responses between different parts of an application. Additionally, many tools for testing APIs like Selenium or JMeter can be connected to open source http clients in order to perform automated tests on web services. Finally, popular databases such as MySQL and MongoDB often have drivers that are compatible with open source HTTP clients, allowing them to be used together in applications.
Trends Related to Open Source HTTP Clients
- Increased Adoption: Open source http clients are becoming increasingly popular among developers, especially since they are free to use and often offer more features than paid options.
- Improved Security: Open source http clients are designed with greater security in mind, which makes them ideal for applications that require a high level of security.
- More Flexibility: Open source http clients offer a wide range of customization options, allowing developers to tailor the client to their specific needs.
- Better Integration with Other Technologies: Open source http clients can be integrated easily with other technologies, such as databases and web servers, making them ideal for larger projects.
- Lower Development Costs: Using open source http clients eliminates the need for expensive license fees associated with proprietary software solutions.
- Increased Reliability: Open source http clients have been developed by a large community of developers, which means that any issues or bugs can be quickly identified and addressed.
- Faster Performance: Open source http clients offer faster performance than their proprietary counterparts, which can result in significant time savings for developers.
Getting Started With Open Source HTTP Clients
Getting started with open source HTTP clients is a great way to access websites and other web-based services. It can also be an easy way to get more familiar with the technologies that power the networked world we live in.
The first step for getting started with open source HTTP clients is to choose one of the many available options. There are numerous popular open source projects that provide different types of HTTP clients, so it’s important to review them and decide which best meets your needs. Popular choices include cURL, Apache HttpClient, Unirest, Requests and Spring RestTemplate. Most of these tools have comprehensive documentation that walks you through the steps needed to install and configure them on your system.
Once you have chosen and installed an appropriate tool, configuring it should be relatively straightforward. Each program may require its own configuration parameters, but most will need basic details such as domain name or IP address of the server as well as port number used for communication between client and server. Additionally some programs may require credentials for secure connection such as username/password combinations or authorization tokens.
The next step is actually making requests from your environment using your favorite programming language or REST API test applications like Postman or SoapUI depending on how exactly you want your request processed - if at all. This usually involves writing code that builds a “request object” containing all necessary information about what type of request you want performed (e.g., GET or POST) plus any data required by the target resource as part of that specific call (e.g., query parameters). If everything is configured correctly this should result in receiving response from the remote resource which is then consumed by our application according to our usage scenario; this could range from simple logging/printing out results all way up to feeding data fetched into machine learning models etc.
Finally there are certain safeguards in place when dealing with sensitive data over public networks like HTTPS encryption; here proper configuration would involve setting protocols such as SSL/TLS appropriately depending on resources accessed being secured by them or not etc… Needless to say most lower level details (such as TLS connection establishment order) can usually be set automatically through frameworks etc, though doing so manually does offer more control should potentially difficult compatibility issues arise between systems involved in communication due variety of versions employed for example within each language's toolset library versions available up until application deployment etc…
That said before trying use open source HTTP clients make sure all possible security precautions were taken care of first since misuse might lead wrongfully expose private & confidential information albeit intentionally or unintentionally.
