1.openreplay / openreplaySession replay, cobrowsing and product analytics you can self-host. Best for reproducing issues and iterating on your product.session-replayreactjavascriptanalyticsangulardevtools+10 moreTypeScriptOther license13K total879 forks+1,166 starsfrom 11,919 · score 7.06
2.unjs / fontaineAutomatic font fallback based on font metricsclsfontsweb-vitalshacktoberfestTypeScriptMIT2K total50 forks+66 starsfrom 1,937 · score 4.20