Microalgae are photosynthetic organisms that produce oxygen and valuable compounds using CO₂ and sunlight. They are used to develop biofertilizers and biostimulants that benefit agriculture by improving soil fertility and plant growth. However, these products face challenges in preparation that affect their shelf life. This review provides a comprehensive analysis of biofertilizers and biostimulants from microalgae, including a bibliometric analysis, technological advances in formulation methods, and a global market analysis. Microalgae strains such as Chlamydomonas, Chlorella vulgaris, and Spirulina are commonly used in biofertilizers and biostimulants. The review highlights the importance of proper formulation to ensure effectiveness and stability. Biofertilizers and biostimulants can be formulated in liquid or solid forms using techniques like encapsulation, spray drying, and fluidized bed drying. These formulations improve nutrient availability, reduce chemical fertilizer use, and enhance plant growth. The market for biofertilizers and biostimulants is growing, with significant potential for sustainable agriculture. Companies like Neoalgae, Biorizon Biotech, and Algenol are developing products based on microalgae. Despite their benefits, challenges such as high production costs, limited shelf life, and environmental concerns remain. Further research is needed to optimize microalgae-based products for agricultural use.Microalgae are photosynthetic organisms that produce oxygen and valuable compounds using CO₂ and sunlight. They are used to develop biofertilizers and biostimulants that benefit agriculture by improving soil fertility and plant growth. However, these products face challenges in preparation that affect their shelf life. This review provides a comprehensive analysis of biofertilizers and biostimulants from microalgae, including a bibliometric analysis, technological advances in formulation methods, and a global market analysis. Microalgae strains such as Chlamydomonas, Chlorella vulgaris, and Spirulina are commonly used in biofertilizers and biostimulants. The review highlights the importance of proper formulation to ensure effectiveness and stability. Biofertilizers and biostimulants can be formulated in liquid or solid forms using techniques like encapsulation, spray drying, and fluidized bed drying. These formulations improve nutrient availability, reduce chemical fertilizer use, and enhance plant growth. The market for biofertilizers and biostimulants is growing, with significant potential for sustainable agriculture. Companies like Neoalgae, Biorizon Biotech, and Algenol are developing products based on microalgae. Despite their benefits, challenges such as high production costs, limited shelf life, and environmental concerns remain. Further research is needed to optimize microalgae-based products for agricultural use.