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API Specifications

Repositories hosting machine‐readable API definitions and specifications (e.g. in OpenAPI/Swagger format) used to describe and validate RESTful services.

The Linux Foundation

by The Linux Foundation

・

34 projects ・ Updated 14 Mar 2025

Project
Contributors
Organizations
Software value
Kubernetes
117,218
22,059
$5.8B
Istio
13,610
2,964
$451M
NestJS
7,792
1,947
$3.6M
OpenShift Origin
4,504
966
$365M
AsyncAPI
3,987
734
$35M
Swagger Core
3,873
807
$3.4M
OpenAPI Initiative
3,559
1,032
$30M
go-swagger
2,273
691
$19M
SwaggerEditor
2,173
596
$797K
swagger-php
1,395
326
$1.1M
Swagger Parser
1,075
221
$6.6M
TypeSpec
868
190
$43M
kin-openapi
817
236
$3.6M
Open API Node.js
538
161
$1.2M
Micronaut OpenAPI
491
109
$4.2M
apispec
385
131
$279K
SmallRye OpenAPI
378
92
$2.7M
gnostic
321
111
$2.2M
libopenapi
220
83
$21M
OSGi
172
34
$42M
Agent Payments Protocol (AP2)
117
26
$341K
OpenAPI3-TS
96
34
$73K
Smithy Kotlin
96
16
$12M
Swag
70
39
$447K
ApiDOM
61
20
$13M
API Guardian
30
19
$21K
Azure REST API Specifications
0
0
$0
GitHub Webhooks Specifications
0
0
$0
Google API Client Library
0
0
$0
OGC API - Features
0
0
$0
OpenAPI TS Type Generator
0
0
$0
OpenAPI.NET SDK
0
0
$0
Springdoc OpenAPI
0
0
$0
Swashbuckle.AspNetCore
0
0
$0
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