In Singapore, You can easily check average salary range. I’ll share good site!

mycareersfuture.gov.sg

This website managed by government. All companies(including Google and Facebook) have to post job description including salary range. If you are foreigner you can’t apply job directly. This jobs are for Singaporean or Permanent Residences.

But You may check actual salary range in Singapore.

https://nodeflair.com

This website is focusing on Singapore. Now expanding Thailand and more. I highly recommend this site.

Conclusion

In Singapore, most of salary informations are opened.