Texturefun - Texturefun is software that offers high-quality textures in every size, making you download and use any texture in your 3D or 2D models.
Textures.com - Textures.com is a website that offers digital pictures of all sorts of materials.
Seamless PBR Textures - Seamless PBR Textures is one of the intelligent software that utilizes physically based rendering technology that aims to simulate when light reacts with the model.
Poly Haven - Poly Haven (formerly known as Texture Haven) is an online website where you will find scanned textures without any cost and that are of high quality.
3DJungle - 3DJungle is a software that contains attractive tileable textures, 3D models, materials, and lessons for 3D designs and visualization, making you easily apply any texture in your models without any hurdle.
Poliigon - A library of materials, and HDR's for artists including free textures that want photorealism.