Are the days of hopelessly waving one's hand in the air as occupied cabs stream past finally over? A new crop of startups is trying to make the experience of hitching a ride a lot easier, according to a recent New York Times report.

While some ride-share services offer apps to help form carpools, these new car service startups create for-profit taxi networks based around flexible rates.

Take SideCar, which debuted this week in San Francisco. The service allows people to use their smartphone to find others willing to give them a ride.

SideCar spits out suggested fares based on what others have paid for similar rides, though the service ultimately leaves pricing up to users. At the end of the ride, drivers and passengers rate each other on their experience, so being cheap can hurt a user's score. The service has offered 10,000 "test rides" since February and has received funding from several venture capital firms and angel investors, including Mark Pincus, the co-founder of Zynga, The New York Times reports.

Though riding with strangers may seem dangerous, SideCar drivers providing the service must have their criminal backgrounds, insurance and driving records examined in advance.

But if hopping into a stranger’s car still isn’t your thing, Cabulous offers a service that partners riders with professional drivers, rather than amateurs.

Through the Cabulous iPhone or Android app, users can have a car sent to their location and can pay with a credit card. The Wall Street Journal reports the company boasts more than 100,000 monthly customers and a growing network of 1,000 taxis.

Then there's Uber, which like SideCar began in San Francisco, but offers a more luxurious (and expensive) ride, with a fleet of Mercedes and Lincoln Town Cars. Although a ride from Uber costs around 50 percent more than the average car service, according to Fast Company, the company prides itself on the efficiency of its service and the responsiveness of its mobile app. According to VentureWire archives, Uber has raised $43 million since 2011.

While much of the value of these startups will be determined by how users feel about their interfaces, the bigger hurdle may be how each company deals with local car-sharing laws. Jessica Scorpio, founder and CEO of Getaround, lobbied San Francisco to pass an insurance law to protect users who made their cars available for sharing. In other cities these services must confront everything from sting operation inspections, to taxes on customers and owners and other restrictions.

“Long term we are concerned, as are all of these share economy companies, that incumbents will use regulation to hold back innovation,” Sunil Paul, chief executive of SideCar, told The New York Times.

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  • Zipcar

    Zipcar allows its members to join and reserve cars for daily use. When your time with the car is over, you return it to a designated parking spot. <a href="http://www.zipcar.com/cities?return_url=%2fhow%2fgetting-started&signature=233+1340828339+8D9EA0937984AA6F3D381A766E5E6F6C5606F3AF" target="_hplink">Zipcar has locations in many cities across America</a>. <a href="http://www.zipcar.com/" target="_hplink">Website</a>

  • Hailo

    What began in London with black cars has spread to New York, Dublin, Toronto and Chicago. Using their app allows users to find yellow taxis that also have the app installed on their phone in hopes that it will make the process of finding a cab quicker. <a href="https://hailocab.com/" target="_hplink">Website</a>

  • SideCar

    The newly launched SideCar is only available in San Francisco but offers the ability for anyone looking for a ride to connect with a stranger willing to give it. Drivers and customers rate each other on the experience, with price adjustable based on what other people have paid for similar rides. <a href="http://www.side.cr/" target="_hplink">Website</a>

  • Uber

    Uber refer to themselves as "everyone's private driver" and considering the quality of their vehicles -- Lincoln Town Cars and Mercedes S Classes -- they offer a uniquely luxurious experience, for a higher price. Requesting a ride is a matter of using their app and waiting for a short time. The service is available in <a href="https://www.uber.com/cities/san-francisco" target="_hplink">15 cities across the world</a>. <a href="https://www.uber.com/cities/san-francisco" target="_hplink">Website</a>

  • Cabulous

    Cabulous offers users the ability to hail a cab, track it from their current location and pay through their smartphone. It's currently only available in San Francisco with plans to expand. <a href="http://cabulous.com/" target="_hplink">Website</a>

  • GetTaxi

    Tel-Aviv based GetTaxi also offers the ability to hail cabs and track them from where you are. In addition, they also offer rewards like free rides to frequent users. GetTaxi is currently in Israel, Russia and the UK. It has plans to extend into France, Germany, Italy, Spain and New York, where it wants to become the official taxi app of the city after a <a href="http://thenextweb.com/insider/2012/06/15/gettaxi-is-applying-to-become-nycs-official-taxi-smartphone-app-partners-with-dwolla-hopstop/" target="_hplink">partnership with HopStop</a>. <a href="http://gettaxi.com/" target="_hplink">Website</a>

  • Getaround

    Getaround allows people with underutilized cars to rent them out to a community of trusted drivers for a per hour fee. Envisioned by its creators as a sustainable transportation model, Getaround looks to combat the inactivity that is inherit within many personal automobiles by making them available to the service's users. <a href="http://www.getaround.com/" target="_hplink">Website</a>