It seems like every day I run across a new startup in real estate. They attack all different pieces of the real estate puzzle, from online search to property management.

Here are my top 5 to watch right now:

While their online property management software geared towards small landlords is only in the infancy of getting started, they have garnered a ton of support in the form of investors and early adopters to their site. Given that online applications are such a necessity in today’s world and there are so many opportunities to expand their service as adoption grows in the landlord community, I believe this company will be a rockstar for years to come.

Anth and Taylor, co-founders of Zumper, have taken the aging idea of aggregating listings on a great looking UI to a new level by adding management tools and mobile listing software. Backed by some of the more prominent VC and angel firms, these guys are on their way to becoming a household name for renters.

Justin and Viren, co-founders of RentalEngine, are putting a new twist on the rental search by showing only no fee listings. Available only in the NYC market (for now), this seems to be a no-brainer starting point for renters in markets dominated by brokers. Hurdles remain in accessing enough listing data to be relevant, but with so few options for finding apartments without a fee in NYC, they should be able to at least capture a significant number of eyeballs.

Much like RentalEngine, these guys are going after traditional brokers through the advent of technology. They currently serve as pseudo-agents and offer discounted fees for renters in NYC. With all their hype and funding (I’ve heard upwards of $20million at a $150million valuation), I’m disappointed at the level of disruption so far, but expect big things from this company in the future.

42Floors is revolutionizing the way commercial real estate is leased. Ease of use and access to quality data make this site one to watch for years to come.