After Wizards of the Coast screwed the pooch by trying to rescind the OGL several designers, youtubers, and TTRPG streamers decided to make their own D&D-adjacent games. Let's have a look at them! (These are not reviews, and I have not played or read many of these. Just an overview of the field for future reference. Please let me know if I've skipped any entries I should have included.)
Tales of the Valiant by Kobold Press is to D&D 5e as Pathfinder 1e was to D&D 3.5. It's basically the same experience as D&D, updated and tweaked, but recognizably still the same game. Like Paizo back in the day, Kobold Press is a highly rated third party D&D publisher, and this has a good chance of getting continued development and support. If you like 2014 5e but want some quality of life updates and don't want to support Wizards of the Coast, this is a great option for you. On the other hand, if you have the 2014 5e books and just want to keep playing them...no one's stopping you, and this may feel redundant. It's already available.
Draw Steel by MCDM is the RPG from Matthew Colville's company, announced very quickly after the OGL dooblydoo. This is not a 5e or D&D clone, but a new cinematic heroic fantasy RPG. While D&D is kind of locked into supporting several different directions and styles, Draw Steel purposefully eschews "zero-to-hero" character development and dungeon crawling. The characters start as powerful, competent heroes. If that's the style of play you want, this could be a good option! If you're interested in a steeper leveling experience or OSR rat-catching, maybe it's not the one? Draw Steel is still in development.
Daggerheart by Darrington Press is Critical Role's long-form fantasy RPG. Like Draw Steel, it is not a 5e clone, but an entirely new fantasy RPG system. Unlike Draw Steel (from what I've seen, correct me if I'm wrong) Daggerheart does not appear to require/support tactical miniature combat, so if that's your jam in D&D (and, honestly it kind of *is* for me) this may not scratch that itch. I wasn't really impressed with Candela Obscura, Darrington Press' previous RPG, but I'm still willing to give this a fair look when it's finished (if only to understand what's going on when the Critical Role team inevitably play it on stream). Daggerheart is still in development.
DC20 by The Dungeon Coach. Of the RPGs on this list this probably has my least favorite title, if only because it's based on a pun which itself requires knowledge of D&D mechanics to understand. I've heard the rules described as "5e and Pathfinder 2e's lovechild". The game itself seems to be a collection of often interesting homebrew rules; it's as if the author looked at each part of D&D, took it out, thought of something they liked better (maybe from PF2?), and replaced it with that. That means it could be a good game to try if you like D&D but want something a bit "more", or could be good resource for homebrew ideas to plug into your own "actual D&D" game. Available now.
Nimble by Nimble Co, like DC20, is an attempt to take the 5e rules and improve and streamline them, in a fairly modular way that would be easy to cross-pollinate into existing D&D games (according to the KS page, it's fully compatible with existing 5e adventure modules, monster books, and supplements). This one does seem a little more polished than DC20, at least in terms of production values. But ultimately, like DC20, whether you want to play the game as-is or how helpful as a resource it will be will depend on how much you like the adjustments to base-5e that they've made -- YMMV. Still in development.
Vagabond by Land of the Blind is an RPG by youtuber Indestructoboy (aka Taron Pounds). It appears to be more generally "D&D"-like rather than specifically 5e-like, if that makes sense. As such, it does advertise some compatibility with previous D&D editions, as well some more modern rules design ideas cross-pollinated from elsewhere (e.g., the monsters don't roll for attacks!). Like both DC20 and especially Nimble, it boasts a streamlined experience, particularly during combat. It's still in development.
We've had another disaster strike the #ttrpgcommunity. One of our own is being eviscerated on YouTube by a cluster of ne're-do-wells representing the anti TTRPG Safety Tool movement. To them, I say kindly knock it off!