Visibility winner
facebook/folly
30.5K stars
Use this as the long-horizon mindshare read, not as the final answer.
Freshness winner
facebook/folly
Momentum not captured in this snapshot
Last commit Aug 26, 2026
Adoption winner
facebook/folly
Package mapping still partial
GitStar keeps the comparison directional when linked package telemetry is missing.
Data completeness
Comparison confidence
0/2 package links
0/2 repos have weekly momentum in the current snapshot.
Compare up to four repositories with comma-separated owner/repo names. GitStar keeps missing package or momentum data explicit instead of flattening it into a false zero.
facebook/folly has the strongest current movement signal in this set. Package mapping is still partial, so this comparison cannot declare a clean adoption winner yet.
GitStar keeps cross-repository gaps visible. Missing package mappings or partial momentum data lower confidence, but they do not stop the page from showing a directional read.
facebook/folly currently leads on long-horizon mindshare with the strongest star base in this comparison.
Stars are strongest at showing durable visibility, not direct production fit.
facebook/folly has the strongest current movement signal in this set.
Recent movement is missing from the current cache, so freshness falls back to commit recency.
Package mapping is still partial, so this comparison cannot declare a clean adoption winner yet.
Treat this as a directional evaluation and verify ecosystem usage directly from package registries.
This comparison lives in the same libraries lane, so package usage and repo detail should carry more weight than raw stars alone.
Shared category overlap makes the comparison more decision-useful than a random popularity matchup.
An open-source C++ library developed and used at Facebook.
Tiny cross-platform webview library for C/C++. Uses WebKit (GTK/Cocoa) and Edge WebView2 (Windows).