1. Evernote (www.evernote.com)
  2. Freshbooks (www.freshbooks.com)
  3. Harvest (www.getharvest.com)
  4. Quickbooks (https://quickbooks.intuit.com)
  5. Worldwide Personal Tax and Immigration guide from Ernst & Young (search on ey.com)

 

References:

Wikipedia.com

www.lonelyplanet.com

 

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