libev vs Usetiful
A side-by-side look at libev and Usetiful. 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
Usetiful
Online Services
Usetiful is a user research and usability testing platform that allows you to conduct remote user interviews, usability tests, card sorts, prototype tests, and more. It provides an easy way to recruit participants from a diverse panel and includes built-in analysis tools.
user-researchusability-testinguser-interviewscard-sorting
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