1 https://fast.com/

2 https://www.virustotal.com/

3 https://haveibeenpwned.com/

4 https://privnote.com/

5 https://pixabay.com/zh/

6 https://tinypng.com/

7 https://www.pdfescape.com

8 https://www.codecademy.com/learn

9 https://undraw.co/

10 https://alternativeto.net/

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