8 API Testing Tools for the Present Year

Postman: A popular tool for API testing, Postman offers easy setup, assertion capabilities, and automation for both coders and non-coders.

[{"selector":"#anim-fe061672-021b-4cb0-add0-e0c6d3ebcdca","keyframes":{"transform":["translate3d(-114.8265%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-2b42b053-9d09-48b4-ab0b-32ad1796df19","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-2067b7e3-badd-4d0d-b7b9-934137a6c806","keyframes":{"transform":["scale(0.15)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"forwards"}] [{"selector":"#anim-e67d8ef1-801f-4eb3-93cf-391a437bb6e8 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(9.781941176147443%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}]

Insomnia: A versatile REST client for testing RESTful and GraphQL APIs, featuring a user-friendly interface and security helpers.

[{"selector":"#anim-1d0fa9ac-908b-4ea3-b278-282098e0cb84 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(62.56818159104699%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-a98eb754-1a87-4959-b447-0a98af7bf40b","keyframes":{"transform":["translate3d(-114.8265%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-4d139607-22a9-410c-b74b-a5bd62d20a45","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-e52f6b96-cc37-4441-addd-9fff90863f20","keyframes":{"transform":["scale(0.15)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"forwards"}]

Testim Automate: Facilitates automated API testing with a graphical interface, including various assertions and verifications.

[{"selector":"#anim-79e4df4f-81d8-49cb-9aed-da3946548043 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(35.234374910402764%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-5da4b684-e589-4806-ac14-145f19ffb0e7","keyframes":{"transform":["translate3d(-114.8265%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-26594e38-5d10-4894-afc9-dcb3187758d0","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-6038bbfb-d95a-42c2-9ee2-5ddfcdd7a070","keyframes":{"transform":["scale(0.15)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"forwards"}]

Soap UI: A feature-rich tool for testing REST and SOAP APIs, offering access to source code and excellent for exploratory testing.

[{"selector":"#anim-dbfb0d1f-ee59-4091-896c-e361921774c9 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(20.27439006352859%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-0e49f260-e4b4-4993-aaf8-80f682d048ba","keyframes":{"transform":["translate3d(-116.71925%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-d234f872-f041-4c95-b688-78e6b653b869","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-a3d65dca-d506-4688-b6ef-8bc3765cecbb","keyframes":{"transform":["scale(0.15)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"forwards"}]

REST Assured: Java library supporting Behavior-Driven Development syntax for testing and validating Restful Web Services.

[{"selector":"#anim-5fa12af2-0316-4821-88d7-7509f346d356 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(39.36103357601796%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-10b6ee5b-8158-49b8-b912-f8fda2274855","keyframes":{"transform":["translate3d(-115.14196%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-28f98fe1-016a-4712-bf74-23e7be5e4a77","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-010d1a09-4683-4ecf-8f5b-3a4f91600c83","keyframes":{"transform":["scale(0.15)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"forwards"}]

Karate DSL: Allows testing REST APIs with domain-specific language, ensuring readable code for verifying status and response JSON.

[{"selector":"#anim-7c15fe27-b55f-4cdf-b991-06db40464355 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(21.94531232976524%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-d634dab5-988e-4522-9a6d-dcb411b95e77","keyframes":{"transform":["translate3d(-115.14196%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-bddbfc42-5998-48ff-8150-849311f64cef","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-302e66f9-0699-4860-b7de-a40daca50873","keyframes":{"transform":["scale(0.15)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"forwards"}]

Hoppscotch: A customizable tool with a modern UI for swift creation of API requests, suitable for those avoiding heavy software installations.

[{"selector":"#anim-e4402d84-617a-42bd-bd55-e49888ba7b35 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(27.5390612421499%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-8d53a2b9-e336-48ba-981e-80f303b513d0","keyframes":{"transform":["translate3d(-116.71925%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-cb9968f2-e452-4603-aa29-b5a3d9d73a77","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-2184e155-b12e-44b4-a0d3-6f0e832edd54","keyframes":{"transform":["scale(0.15)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"forwards"}]

Citrus Framework: A mature tool for testing beyond REST services, automating integration tests for messaging protocols or data formats.

[{"selector":"#anim-af1d0906-c2f4-4abd-a205-2ba3fceb62a5 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(32.418406253446264%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-112ef252-2343-44f0-8868-6b7fe787e9e8","keyframes":{"transform":["translate3d(-114.8265%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-794ac709-9c2d-4ae3-a2cc-4439d60165e5","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-1ac0f47b-38cc-43e6-b2dc-4486d45527d1","keyframes":{"transform":["scale(0.15)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"forwards"}]