Photo Mechanic: a.k.a. the life-changer photojournalist favorite. Would highly benefit any photographer trying to improve their editing workflow. The software is simply a photo viewer (especially useful when you shoot heavier RAW files) which allows you to rank and assign colors — for a fast n’ furious photo selection. 150$ paid once and for all.
Lightroom: took me time to get there (was using Affinity Photo for a long time, which is more of a Photoshop equivalent) - definitely NOT what you want to use for a fast edit. Run through your photos like in a library and make all the adjustments in a few clicks. Also a powerful storage/archive tool. Subscription as part of the Adobe Creative Cloud or on its own.
Format: an amazing website host exclusively made for photographers, with coo templates, which lets you create private client galleries that allow viewing, starring favorites, and downloading (with or without watermark). Professional look guaranteed.
Am I forgetting any? What are the tools that have drastically improved your own worflow?