resttesttest.com
A simple web page for testing APIs. Users specify an HTTP method, URL and parameters and click to send an Ajax request. The page requires a browser with HTML5 support.
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globalping.io
Globalping is a platform for running network commands such as ping, traceroute and DNS resolve on probes distributed worldwide. It is used to monitor, debug and benchmark internet infrastructure. It offers a REST API, CLI and integrations.
github.com
Heritrix is the Internet Archive's open-source web crawler project, described as extensible, web-scale and archival-quality. It is designed to respect robots.txt exclusion directives and META nofollow tags. Documentation covers getting started, operating, configuring crawl jobs and the REST API. It is free software under the Apache License, Version 2.0, with some files under other licenses.
httpie.io
HTTPie is an open-source API testing client for the terminal, also offered as a graphical app for web and desktop in public beta. It is described as making APIs simple and intuitive, and is used for API testing with HTTP servers, RESTful APIs, and web services.
vegetableman.github.io
Vandal is a browser extension that serves as a navigator for the Web Archive, helping users move back in time without leaving the current tab. It is built on the Wayback Machine API and offers calendar and graph views, a built-in browser for archived snapshots, navigation history, a resource drawer and a beta historical view. Limitations include iframe restrictions on some websites and no support for saving pages.
onlinehashcrack.com
A cloud GPU password recovery and credential auditing service for data the user owns or is authorized to test. It supports Office, ZIP, PDF, Wi-Fi captures, NTLM and AD hashes, with a free Basic Search and optional paid custom GPU jobs and unlocks. An authenticated REST API and MCP tools are documented. Uploaded files are deleted after hash extraction.
alttextlab.com
AltTextLab is an AI-powered alt text generator for images. It produces descriptions in 130+ languages and integrates with WordPress, Shopify, Webflow, and 20+ tools, also offering a web snippet and REST API. It provides 25 free credits monthly with no credit card required.
atomcentral.com
AtomCentral is dedicated to the restoration and preservation of US Atomic and Nuclear Test footage. It is a division of VCE Films and offers footage and productions content along with licensing.
beeceptor.com
Beeceptor is a tool for testing, mocking and intercepting HTTP requests. It builds mock REST, SOAP, GraphQL and gRPC servers, supports OpenAPI import, proxying and recording, delays and timeouts, and CRUD routes. Request history is accessible for ten days.
sordum.org
DNS Jumper is a free, portable tool that lets users change DNS servers with a few clicks. It includes IPv6 support, backup and restore of DNS settings, a command-line interface, and a feature that tests DNS response times to find the fastest server. The tool can also flush the DNS cache and add custom DNS servers.
driftguard.app
DriftGuard is a browser-based dashboard for testing and tuning gamepads. It offers drift checks, stick visualization and calibration tools, along with stick, trigger and range calibration, live input display, rumble settings and audio tests. Supported options include selecting target sticks or triggers and saving or restoring calibration.
i-marine.d4science.org
The Global Record of Stocks and Fisheries (GRSF) catalogue is a beta version integrating data from FIRMS, the RAM Legacy Stock Assessment Database, FishSource and the FAO SDG 14.4.1 Questionnaire. It tests logic for generating unique identifiers for stocks and fisheries. Public access is to beta content only, and review of collated stock and fishery data is restricted to selected users.
insomnia.rest
Insomnia is an open-source collaborative API development platform. It supports HTTP, REST, GraphQL, gRPC, SOAP, and WebSockets, and offers AI-native API design, testing, mocking, and debugging features. Users can store data locally, via Git, or in the cloud. The platform has a free tier, paid plans, and integrates with Kong Konnect.
github.com
Ladder is a self-hosted HTTP web proxy and developer tool for testing and analyzing paywall implementations and content delivery behavior on websites. It can remove or modify CORS and other headers, inject custom code, apply domain-based rulesets and emulate different client types. The project states it does not circumvent advanced access restrictions and may not function on services that actively restrict access.
librecrawl.com
LibreCrawl is a free, open-source SEO crawler offered as an alternative to Screaming Frog. It performs technical audits covering meta tags, schema markup, hreflang, social tags and PageSpeed metrics, and integrates Playwright for JavaScript rendering of single-page applications. The project is MIT-licensed and can be self-hosted, with CSV, JSON and XML exports. A REST API provides programmatic control of crawls.