Zenko CloudServer open-source Node.js implementation of S3 protocol
Tencent Server Web
WireMock.Net is a product for stubbing and mocking web HTTP responses
An OOB interaction gathering server and client library
Eclipse Jetty - Web Container & Clients - supports HTTP/2, HTTP
Upload files via DDP or HTTP to Meteor server FS
C++ parallel computing and asynchronous networking engine
The most advanced tool for HTTP API
Microsoft project for cloud-based client-server communication
An Open Source "product catalogue" that is customizable and versatile.
Generate custom HTTP responses, the simpler way to test your services
Fast Parallel Async HTTP/SSH/TCP/UDP/Ping Client Java Library