Luc: Regroup directory by use; descriptions rewritten in house style

2026-09-08T05:59:25Z

Regroup directory by use; descriptions rewritten in house style

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== Free tier: Developer tooling ==
The plumbing between services: API clients and mocks, webhook delivery, scraping, JSON and SQL utilities, and integration tools.

Part of the [[Free Tier Services Directory]].

=== API clients, testing and mocking ===
* [https://beeceptor.com Beeceptor] — Mocks and debugs APIs across REST, SOAP, gRPC and GraphQL without writing code.
* [https://curlhub.io CurlHub] — Proxy that records and inspects API calls for debugging. 10,000 requests a month.
* [https://extendsclass.com/rest-client-online.html ExtendsClass] — Web-based HTTP client for sending requests.
* [https://hoppscotch.io Hoppscotch] — Fast, open API request builder in the browser.
* [https://insomnia.rest Insomnia] — Open-source API client for designing and testing REST and GraphQL APIs.
* [https://jsoning.com/api/ JSONing] — Turns a JSON object into a fake REST API, with control over status codes and headers.
* [https://kreya.app Kreya] — Graphical gRPC client that can import APIs through server reflection.
* [https://www.mockapi.io/ MockAPI] — Mocks up an API and generates plausible custom data behind it.
* [https://mockerito.com/ Mockerito] — Mock REST API with realistic data across nine domains, including e-commerce, finance and healthcare.
* [https://www.mockfly.dev/ Mockfly] — API mocking and feature flag management for development.
* [https://mocko.dev/ Mocko.dev] — Proxies your API and lets you mock chosen endpoints in the cloud while inspecting traffic.
* [https://openapidesigner.com/ OpenAPI3 Designer] — Builds OpenAPI 3 definitions visually.
* [https://postman.com Postman] — The widely used API collaboration platform, covering design, testing and documentation.
* [https://requestbin.com RequestBin.com] — Creates an endpoint that captures and displays whatever HTTP requests are sent to it.

=== Webhooks, scheduling and workflows ===
* [https://anyhook.net AnyHook] — Inbound webhook relay: point a Stripe, GitHub or bot webhook at it and it stores each event for inspection or replay.
* [https://www.hook0.com/ Hook0] — Open-source webhooks-as-a-service, so your own product can offer webhooks to its users.
* [https://www.inngest.com Inngest] — Durable execution and event-driven workflows for TypeScript, Python and Go. Free Hobby plan.
* [https://posthook.io Posthook] — Schedules a webhook to fire at a future time, with retries and delivery tracking.
* [https://www.prefect.io/cloud/ PrefectCloud] — Orchestration for data pipelines. Five deployed workflows and 500 minutes a month.
* [https://www.svix.com/ Svix] — Webhook sending as a service. Up to 50,000 messages a month.

=== Web scraping and extraction ===
* [https://www.apify.com/ Apify] — Scraping and automation platform that turns any website into an API, with ready-made scrapers.
* [https://www.browse.ai Browse AI] — Extracts and monitors data on the web without code. 1,000 credits a month.
* [https://dataminer.io/ Data Miner] — Browser extension that extracts page data to CSV or Excel.
* [https://www.firecrawl.dev/ Firecrawl] — Crawls a site and returns clean Markdown or structured data, intended as input for language models.
* [https://microlink.io/ microlink.io] — Turns any URL into data: normalised metadata, link previews and screenshots.
* [https://scrapersproxy.com Scraper's Proxy] — HTTP proxy API for scraping without managing proxy rotation yourself.
* [https://scrapingant.com/ ScrapingAnt] — Headless Chrome scraping API with JavaScript rendering and rotating proxies.
* [https://serpapi.com/ SerpApi] — Scrapes search engine results and returns structured JSON for Google, YouTube, Bing and others.
* [https://simplescraper.io Simplescraper] — Point-and-click scraping with a webhook after each run. 100 cloud credits.
* [https://geekflare.com/api/ Geekflare API] — Scrapes pages to Markdown, takes screenshots, and runs TLS and DNS checks.
* [https://webscraping.ai WebScraping.AI] — Scraping API with built-in parsing, Chrome rendering and proxies. 2,000 calls free.
* [https://wrapapi.com/ wrapapi.com] — Turns any website into a parameterised API. 30,000 calls a month.
* [https://zenscrape.com/web-scraping-api Zenscrape] — Scraping API with headless browsers and residential IPs. 1,000 requests free.

=== Databases, JSON and SQL tools ===
* [https://www.dbdesigner.net/ DB Designer] — Cloud database schema design and modelling. Two models free.
* [https://comparejson.com Compare JSON] — Compares two JSON structures and shows the differences.
* [https://drawdb.app/ drawDB] — Open-source database diagram editor in the browser, no signup.
* [https://formatjsononline.com FormatJSONOnline.com] — Formats, validates, compares and minifies JSON in the browser.
* [https://jsontotable.org JSON to Table] — Converts JSON into an interactive table for viewing and editing.
* [https://jsongrid.com JSONGrid] — Visualises, edits and filters complex JSON in a table grid.
* [https://www.jsonswiss.com/ JSONSwiss] — JSON viewer, editor and validator with search and formatting.
* [https://pixe.la/ Pixela] — Stores a daily number by API and renders it as a heat map, in the style of a contribution graph.
* [https://www.sofodata.com/ Sofodata] — Turns an uploaded CSV into a secure REST API.
* [https://sqlable.com/ Sqlable] — Collection of SQL tools: formatter, validator and regex tester.

=== Integration and data movement ===
* [https://commercelayer.io Commerce Layer] — Composable commerce API for building and managing orders behind any front end.
* [https://www.coupler.io/ Coupler] — Syncs data between applications and builds live dashboards and reports from it.
* [https://cube.dev/ Cube] — Semantic layer that gives applications consistent access to data across several stores.
* [https://datafetcher.com Data Fetcher] — Connects Airtable to any API without code, with a Postman-like request interface.
* [https://www.dataimporter.io Dataimporter.io] — Connects, cleans and imports data into Salesforce. 20,000 records free.
* [https://cloud.invantive.com/ Invantive Cloud] — Access to more than 70 cloud platforms, including Exact Online, Twinfield and Visma, through one interface.
* [https://preset.io/ Preset Cloud] — Hosted Apache Superset for dashboards and exploration. Free for teams of up to five.
* [https://smartparse.io SmartParse] — Data migration and CSV-to-API platform.

=== API management and monitoring ===
* [https://loginllama.app LoginLlama] — Detects suspicious logins and notifies your users.
* [https://www.treblle.com Treblle] — API log aggregation, observability and governance.
* [https://trophy.so Trophy] — Gamification layer for consumer applications, with prebuilt APIs and open-source UI components.
* [https://zuplo.com/ Zuplo] — API management at the edge, with key authentication and rate limiting. Free tier.

=== Currency ===
Compiled September 2026. Free tiers change frequently and nothing here has been independently verified — check the provider before relying on any allowance described above. Entries cover services with a standing free tier, not free trials.

=== See also ===
[[Digital sovereignty]], and the other sections of the [[Free Tier Services Directory]].

[[Category:Free Tier Services]]

Free tier: Developer tooling - Revision history

Luc: Regroup directory by use; descriptions rewritten in house style