What is the best software for searching and filtering information on the Internet?

Question

Social media

I am a translator. And I would like to know if there are certain programs that allow you to sort information in such a way that you find only the right and fresh.
Let's say for use when searching for orders. People often post job search ads on their social media pages, message boards, etc. In order to find out about such announcements in time, you should always look for this information. And you need some software with which you can find similar content or ads.
And most importantly, up-to-date information.
The VakVak service (vacancies for translators) works on the similarity. They somehow quickly find such information and publish it on their service.
I will be grateful for answers.

Answer 1

If globally then alerts.google.com
Another option is to write your own solution that will "automatically" check the desired site