Wow, I left Zim for a Markdown based setup because I wanted to have an Android client. Settled on Markor, and I never knew it actually supported the Zim syntax. I'll be converting back asap!
Markor is how I came to know of Zim. I read the changelog (for the app) at first as "Vim Wiki support" and got excited, then realised it actually said "Zim Wiki".