API testing apps
107 API testing apps in one list: the established products, and every new one as it launches.
Updated
- Apps
- 107
- New
- +5
- Established
- 0
- Dead
- 4
New API testing apps per month
18 apps launched in the last 12 months, by month.
107 API testing apps in one list: the established products, and every new one as it launches.
Updated
18 apps launched in the last 12 months, by month.
“api testing tool” is searched 1,900 times a month on Google worldwide. These are the 120 searches around it, in the US.
| Search | Per month, US | Cost per click |
|---|---|---|
| postman | 90,500 | $6.25 |
| postman download | 14,800 | $6.36 |
| soapui | 3,600 | $1.69 |
| postman api | 2,400 | $13.69 |
| api testing tools | 1,300 | $17.42 |
| httpie | 1,300 | $135.19 |
| tool for api testing | 1,300 | $23.90 |
| postman online | 1,000 | $11.43 |
| soapui download | 720 | $16.74 |
| api testing tool postman | 210 | $11.40 |
| bruno api testing tool | 140 | $4.80 |
| rest api tools | 140 | $4.23 |
| api security testing tool | 110 | $85.93 |
| open source tool for api testing | 110 | $12.08 |
| api testing tools open source | 90 | $4.86 |
Cost per click is what advertisers bid for one visit from that search. Figures from Oct 2026.
The apps we added to this market most recently.
| # | App | Added |
|---|---|---|
| 1 |  Trellis Trellis is a native macOS terminal that's more than a terminal: windows, tabs and splits in a sidebar, saved SSH hosts, one-click project tasks, a command palette and scratchpad, plus a CLI and MCP server so scripts and AI agents can drive it. Free, MIT. | |
| 2 |  API Test Base Test what your API really did — not just what it returned. | |
| 3 |  FetchSandbox Most API tests stop at 200 OK. FetchSandbox lets developers and AI agents verify what happens next—webhooks, retries, state changes, async workflows, and failure scenarios. It reproduces the real bug, proves the fix, and remembers what breaks—so your agent catches it before production. Connect via MCP to Cursor, Claude Code, Windsurf, VS Code, and Codex. Explore 60+ APIs—Stripe, GitHub, Clerk, Resend, Twilio, Descope, OpenAI—without burning real API quota or waiting on staging. | |
| 4 | HT Httpstatus api testing, developer tools, api monitoring, mcp server, api mocking, ssl checker, json formatter, openapi validator, cors debugger, jwt decoder, security scanner, uptime monitoring, chaos engineerin | |
| 5 |  Testsprint360 Automate web, mobile, and API testing with AI for faster releases | |
| 6 |  Cognivox AI Test, debug, and automate APIs with AI chat and visual workflows | |
| 7 | OC Octrafic Octrafic is an open-source CLI for API testing. Point it at any OpenAPI spec or live endpoint, describe what you want to test in plain English, and let it handle the rest - from generating requests to validating responses and exporting a PDF report. No test scripts, no GUI, no mocks. Just a single binary. Works with OpenAI, Claude, Ollama, and any OpenAI-compatible provider | |
| 8 |  Quetzly Quetzly helps developers, GIS and IT teams test, monitor, and visualize geospatial APIs. Send http requests, adjust headers and query params, and inspect JSON with an integrated editor. Render WMS, WFS, GeoJSON and ArcGIS services on an interactive map, toggle layers, zoom to extents, and export data as GeoJSON or Shapefile. Track endpoint health to reduce downtime and keep location services reliable. Quetzly is currently in open Beta. Try it for free. | |
| 9 | AD Random Address Generator Random Address Generator | |
| 10 | DE DevScribe Developer Tools → Productivity | |
| 11 |  Kreya Postman alternative. Build APIs faster! | |
| 12 |  testlemon TestLemon - low-code API testing and website monitoring tool |
Grouped by what each app says it does. 79 of 107 apps fit a group so far.
| Type | Apps | Share | Examples |
|---|---|---|---|
| API clients and testers | 50 | 63.3% | API Checker: The Dev Test Tool, Api Client, API Client |
| Mobile API testing | 11 | 13.9% | API & HTTP Client, API Client - REST HTTP Tester, API tester |
| API test automation | 7 | 8.9% | B2ALABS, Httpstatus, keploy |
What we could detect on their websites.
| Framework | Apps | Share |
|---|---|---|
| Next.js | 12 | 63.2% |
Of 19 apps whose framework we could detect.
| Host | Apps | Share |
|---|---|---|
| Vercel | 7 | 100.0% |
Of 7 apps whose host we could detect.
How many of the 107 apps show a price, and how many sell to large companies.
| Measure | Apps | Share of 107 |
|---|---|---|
| Publish a pricing page | 13 | 12.1% |
API testing software lets you describe how an API should behave, exercise it with real requests, and check the responses automatically. You define endpoints, methods, headers, body payloads, and variables like environment or secrets.
4 more types of API testing apps with Starter.See plans
The rest of the guide to API testing apps with Starter.See plans
3 more answers about API testing apps with Starter.See plans
105 more searches around “api testing tool” on Starter and Pro. See plans