Famo.us vs Riot: What are the differences?
"Speedy as native apps" is the primary reason why developers consider Famo.us over the competitors, whereas "Light weight. Fast. Clear" was stated as the key factor in picking Riot.
Famo.us and Riot are both open source tools. Riot with 13.7K GitHub stars and 1.02K forks on GitHub appears to be more popular than Famo.us with 6.48K GitHub stars and 765 GitHub forks.