Avast is free to download and use, and comes with a number of different features which include an online revise utility, a PC optimizer, a fire wall, a level of privacy guard, a parental control, and more. กฎบัตรคณะกรรมการสรรหาและพิจารณาค่าตอบแทนĪvast is known as a great piece of software to acquire if you use Windows Vista, mainly because it has many features that will help in keeping the body clean and problem free.