Best API Clients in 2026
Updated
API clients give you a workspace for sending requests and handling the details of API development and testing. Compared on API documentation and automated test runs, the entries also show support for GraphQL, gRPC, and WebSocket, plus available platforms and team workspaces. Check the protocol support against the APIs you work with, and consider whether collaboration features fit how your team shares work. Apidog, Bruno, and Hoppscotch are among the options, along with Postman and SoapUI. Free-plan availability and paid-from pricing add cost context as you weigh the listed capabilities against your workflow.
API clients, one module each.A lit port is something its maker publishes; 7 of 7 with a known API signal have a public API.
- 01 Apidog API yesFREE yesDOCS 8.7$9/mo
- 02 Bruno API yesFREE yesDOCS 8.6$6/mo
- 03 Hoppscotch API yesFREE yesDOCS 8.3$6/mo
- 04 Postman FREE yesDOCS 7.4$9/mo
- 05 SoapUI FREE yesDOCS 7.2Free
- 06 Insomnia FREE yesDOCS 7.2$12/mo
- 07 Refit API yesDOCS 7.1
- 08 WhoisJSON API API yesFREE yesDOCS 7.1$10/mo
- 09 HTTPie FREE yesDOCS 7.0Free
- 10 Testfully FREE yesDOCS 7.0$10/mo
- 11 Hurl FREE yesDOCS 6.9Free
- 12 OpenReq FREE yesDOCS 6.9Free
- 13 nasapower API yesFREE yesDOCS 6.9Free
- 14 Kreya FREE yesDOCS 6.8$5/mo
- 15 httpYac FREE yesDOCS 6.8Free
- 16 Altair GraphQL Client FREE yesDOCS 6.7Free
- 17 Firecamp FREE yesDOCS 6.7$4,959/mo
- 18 ReadyAPI DOCS 6.6
- 19 SPARQLWrapper API yesDOCS 6.6
- 20 Thunder Client FREE yesDOCS 6.5$3/mo
- 21 grpcurl FREE yesDOCS 6.5Free
- 22 Requestly FREE noDOCS 6.4$10/mo
- 23 Insomnium FREE yesDOCS 6.4Free
- 24 Vegha FREE yesDOCS 6.4Free
- 25 RESTK FREE yesDOCS 6.3Free
Compare all 25 in a table
| # | Platform | Score | Free plan | From | Free plan | Paid from | GraphQL support | gRPC support |
|---|---|---|---|---|---|---|---|---|
| 1 | Apidog | 8.7 | Free plan | $9/mo | Yes | $9/user/mo | Yes | |
| 2 | Bruno | 8.6 | Free plan | $6/mo | Yes | $6/user/mo | Yes | |
| 3 | Hoppscotch | 8.3 | Free plan | $6/mo | Yes | $6/user/mo | Yes | |
| 4 | Postman | 7.4 | Free plan | $9/mo | Yes | Yes | ||
| 5 | SoapUI | 7.2 | Free plan | Free | Yes | Yes | ||
| 6 | Insomnia | 7.2 | Free plan | $12/mo | Yes | $12/user/mo | Yes | |
| 7 | Refit | 7.1 | Yes | |||||
| 8 | WhoisJSON API | 7.1 | Free plan | $10/mo | Yes | |||
| 9 | HTTPie | 7.0 | Free plan | Free | Yes | Yes | ||
| 10 | Testfully | 7.0 | Free plan | $10/mo | Yes | $14/user/mo | Yes | No |
| 11 | Hurl | 6.9 | Free plan | Free | Yes | Yes | ||
| 12 | OpenReq | 6.9 | Free plan | Free | Yes | Free | Yes | No |
| 13 | nasapower | 6.9 | Free plan | Free | Yes | No | No | |
| 14 | Kreya | 6.8 | Free plan | $5/mo | Yes | $5/user/mo | Yes | |
| 15 | httpYac | 6.8 | Free plan | Free | Yes | Yes | Yes | |
| 16 | Altair GraphQL Client | 6.7 | Free plan | Yes | $7.99/user/mo | Yes | ||
| 17 | Firecamp | 6.7 | Free plan | $4,959/mo | Yes | $49/user/mo | Yes | |
| 18 | ReadyAPI | 6.6 | No | Yes | ||||
| 19 | SPARQLWrapper | 6.6 | Yes | No | No | |||
| 20 | Thunder Client | 6.5 | Free plan | $3/mo | Yes | $3/user/mo | ||
| 21 | grpcurl | 6.5 | Free plan | Free | Yes | No | Yes | |
| 22 | Requestly | 6.4 | No | $10/mo | No | $10/user/mo | Yes | Yes |
| 23 | Insomnium | 6.4 | Free plan | Free | Yes | Yes | Yes | |
| 24 | Vegha | 6.4 | Free plan | Free | Yes | Yes | Yes | |
| 25 | RESTK | 6.3 | Free plan | Free | Yes | Yes |
Is your platform on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.