Image Color Transfer is a free, browser-based application that allows a photo to be color graded to match the color of another photo, similar to the "Match Color" feature found in standalone photo editing applications.
The founder of lutify.me has launched fylm.ai, a modern AI-powered and browser-based approach to motion and stills color grading that helps users easily match and extract color, emulate print film, share and collaborate remotely, and more.
The School of Photography has shared a detailed 19-minute video breakdown that explains how to color grade in both Adobe Photoshop and the latest version of Lightroom, details the differences between the two systems, and talks why you might want to use one or the other.
Here's a 5-minute tutorial from Evan Ranft that shows you why and how you can easily split tone your photos for better colors using Adobe Lightroom.