Flight vs jsblocks: What are the differences?

Developers describe Flight as "A component-based, event-driven JavaScript framework from Twitter". Flight is distinct from existing frameworks in that it doesn't prescribe or provide any particular approach to rendering or providing data to a web application. It's agnostic to how requests are routed, which templating language you use or even if you render your HTML on the client or the server. While some web frameworks encourage developers to arrange their code around a prescribed model layer, Flight is organized around the existing DOM model with functionality mapped directly to DOM nodes. On the other hand, jsblocks is detailed as "An Isomorphic JavaScript Framework Faster Than React". From simple user interfaces to complex single-page applications using faster, server-side rendered and easy to learn framework.

Flight and jsblocks can be primarily classified as "Javascript UI Libraries" tools.

Flight and jsblocks are both open source tools. It seems that Flight with 6.64K GitHub stars and 588 forks on GitHub has more adoption than jsblocks with 2.82K GitHub stars and 120 GitHub forks.