Some community downloads include registration keys. For v1.3, for example, you may be prompted to enter a key like PEDG*Look*AE*888888888888888SUL8 (this is a known educational key—use at your own discretion).
Some free community-driven plugins exist, but they rarely match the quality and speed of Deep Glow. Conclusion deep glow after effects plugin free 2021
Purchase a lifetime license if it fits your production needs. Top Free Alternatives to Deep Glow Some community downloads include registration keys