libev vs userinput.io
A side-by-side look at libev and userinput.io. For an in-depth review of either product, follow the links below.
libev
Development
libev is a high-performance event loop/event model library written in C. It allows asynchronous events and callbacks to be registered and handled efficiently in applications. libev supports various event notification interfaces like timers, signals, sockets, pipes, and more.
cevent-loopasynchronouscallbackstimerssignalssocketspipes
userinput.io
Online Services
userinput.io is a user research platform that allows you to get feedback on websites, apps, concepts and more through remote user tests and surveys. It makes user research easy and affordable.
user-testingsurveysfeedbackuser-experience
Related Comparisons
PingPong
Userbrain
Userfeel.com
ATryBox
UserTest.io
upNable