Bakery is a high-end, production-ready, hassle-free GPU lightmapper, designed as an alternative to Enlighten and Progressive.

NOTE: Requires modern Nvidia GPU (6xx or newer) and 64-bit Windows (7 or higher).
Doesn't support AMD cards for baking.
Doesn't support Macs.
Tested on everything from Unity 5.6 to 6000.0.10f, as well as URP/HDRP.
If Asset Store does not allow downloading to pre-2019.4 versions, you can install 2019.4, download it and then copy to an earlier version project.
Resulting lightmaps are compatible with all platforms.

Manual - make sure you read FAQ
Forum thread

Features:

- Physically correct baked lighting. All results were compared against Mitsuba offline renderer.

- Performance: uses GPU for ray-tracing.

- Can take advantage of (but not requires) RTX hardware.

- Uses NVidia AI Denoiser to remove noise, powered by deep learning.

- Fixes common baking artifacts, such as lighting leaks and UV seams.

- Global Illumination (supports custom shaders).

- Sky lighting (HDRI or color).

- Emissive textured meshes.

- IES Lights.

- Directional, point, spot light sources.

- Materials: supports albedo, emissive, opacity.

- Can produce both complete and indirect lightmaps, or even mix both per-light.

- Can produce shadowmasks.

- Supports directional baking (bump/specular) with 4 modes: dominant direction (compatible with most shaders), Radiosity Normal Mapping, per-pixel spherical harmonics, as well as simply baking normal maps to diffuse.

- Light probes.

- Can bake 3D textures as well.

- Automatic atlas packing.

- Supports Mesh Renderers, Skinned Meshes and Terrains.

- Supports LODs.

- Supports baked prefabs.

- Real-time ray traced preview can be additionally installed.

Some notable games shipped using Bakery:
Call of Duty Mobile
Totally Accurate Battle Simulator
Dead and Buried II

... and many more!