What startups are based in Sydney, Australia?

Some of the more notable Sydney-based startups, in no particular order, include:

BuildingIQ - building energy management system http://www.buildingiq.com/
Expanz - application development platform http://www.expanz.com/
Solvexia - online process automation http://www.solvexia.com/
TigerSpike - mobile enterprise delivery platform http://www.tigerspike.com/
Cocoon Data - data encryption technology https://www.cocoondata.com/
IPScape - contact centre software http://www.ipscape.com.au/
Big Mobile - mobile advertising platform http://bigmobile.com/
OrionVM - scalable cloud computing services http://orionvm.com.au/
Taggle - low cost telemetry systems http://www.taggle.com.au/
HopShopper - mobile loyalty cards http://hopshopper.com/au/
Iris Interactive - drug commercialisation software http://iris.com.au/
ReadCloud - social e-reading software http://readcloud.com/
Angusta - cash logistics management software http://www.angusta.com.au/
Boonex - social network software - http://www.boonex.com
Financial Simplicity - portfolio management software http://www.financialsimplicity.com.au/

UPDATE: A few more.

Becase Group - digital media distribution http://www.becausegroup.com/
Funbox - display advertising management http://www.funbox.com/
3rd Sense - online games network http://www.3rdsense.com/
Groundlabs - payment data management http://www.groundlabs.com/
Blue Glue - asset tracking http://blueglue.com.au/
Acelero - performance management software http://www.acelero.com.au/
BrainGauge - cognitive assessment system http://www.braingauge.com.au/
Lumigenix - personalised genetics testing https://www.lumigenix.com/
Wi Protect - asset tracking http://www.wiprotect.com/
RecruitLoop - online recruiting platform http://www.recruitloop.com.au/
DesignCrowd - design marketplace http://www.designcrowd.com/
RentBook - property management software http://rentbook.com.au/
Ramp - RFID developer http://www.ramp.com.au/
Brandscreen - advertising exchange portal http://www.brandscreen.com/
Hyperlocalizer - localised media creation tools http://www.hyperlocalizer.com/
Parklings - domain asset management http://www.parklings.com/
Encassa - antivirus software https://www.encassa.com/
Domainspike - domain management http://www.domainspike.com/
Mercurien - toll road transaction processing http://www.mercurien.com/
Elcom - CMS system http://www.elcom.com.au/
Blink Mobile - mobile development platform http://blinkmobile.com.au/
Dataract - BPM product suite http://www.dataract.com.au
vtalk - VoIP PBX developer http://www.vtalk.com/
Tegatech - tablet manufacturer http://www.tegatech.com.au/TEGA/v2/

There are obviously many others that can be found listed on sites such as:

The ATS http://ats.business.gov.au/
iPitch http://www.ipitch.com.au/
Startup Australia http://www.startup-australia.org/startups

Or mentioned by:

Australian Anthill http://anthillonline.com/
Smart Company http://www.smartcompany.com.au/

Some from our Pollenizer team;

A http://friendorse.com/ of mine got me this great http://dealised.com/ on some http://travelcandy.com/ that I shared with my http://carmates.com.au/ . It was then that I realised the http://mythofme.com/ was largely http://unrenovated.com.au/ so I called to my http://posse.com/ and we took to the http://stagebitz.com/ to rock out.

Startups that we have worked on before;
http://mogeneration
http://posse.com
http://spreets.com