I'm sure there are others but two of the bigger ones are you lose the right to vote and you lose the right to own any firearms, whether its a violent or nonviolent felony doesn't matter. Both can be reinstated though particularly with the firearms it is a time consuming, expensive process. It can also make travelling outside of the country difficult.

1) "In modern times, felons can receive punishments which range in severity; from probation, to imprisonment, to execution for premeditated murder or other serious crimes. In the United States felons often face additional consequences, such as the loss of voting rights in many states; exclusion from certain lines of work and difficulty in finding a job in others; prohibition from obtaining certain licenses; exclusion from purchase and possession of firearms, ammunition and body armour; and ineligibility to run for or be elected to public office. In addition, some states consider a felony conviction to be grounds for an uncontested divorce. All of these losses of privileges, including others noted explicitly by the judge in sentencing, are known as collateral consequences of criminal charges. Finally if a felon is not a U.S. citizen, that person may be subject to deportation after sentencing is complete. Civil sanctions imposed on United States citizens convicted of a felony in many states include the loss of competence to serve on a grand or petit jury or to vote in elections even after release from prison. While controversial, these disabilities are explicitly sanctioned by the Fourteenth Amendment to the United States Constitution, a Reconstruction-era amendment that deals with permissible state regulation of voting rights." Source and further information: http://en.wikipedia.org/wiki/Felony 2) "In addition to the possibility of serving prison time, people convicted of felony crimes lose many of their civil rights. The right to vote is taken away, as is the right to serve on a jury. Typically, convicted felons are not allowed to enlist or remain in the military. A felon's driver's license may be revoked or suspended; employers have the right to inquire about any felony convictions, and may require insurance coverage before hiring anyone with prior history as a felon. Many insurance companies will not insure convicted felons, therefore making it difficult for many people to obtain jobs." Source and further information: http://www.johnfoxlaw.com/felonies.asp 3) "Most IT jobs out there do background checks. Computer technology is one of those fields in which the individual is entrusted with information that is crucial to the business, therefore most computer related, technology based Companys do background checks and they will not, for fear of hurting the company, hire a convicted felon, which is usually clearly stated in their hiring [guidelines]." "You will be automatically disqualified from getting the following jobs and/or licenses: Private detective and private security personnel: You will be denied a private detective’s license if you have been convicted of a felony; if in the prior 7 years you have been convicted of illegal narcotics possession, criminally negligent homicide, 3rd degree assault, 2nd degree threatening, 1st degree reckless endangerment, 2nd degree unlawful restraint, 1st or 2nd degree riot, inciting to riot, or 2nd degree stalking; if you have been convicted of any offense involving moral turpitude; or if you have been discharged from military service under conditions that demonstrate questionable moral character. You cannot work for a licensed private detective, guard, or security officer if you have been convicted of a felony, any sexual offense, any crime that would question your honesty and integrity, or if you have been denied a private detective’s license. Bail enforcement agent or bail bond agent: You will be denied a license to work as a bail enforcement or bail bond agent if you have been convicted of a felony, illegal narcotics possession, criminally negligent homicide, 3rd degree assault, 2nd degree threatening, 1st degree reckless endangerment, 2nd degree unlawful restraint, 2nd degree failure to appear, 1st or 2nd degree riot, inciting to riot, or 2nd degree stalking. Taxi driver, livery driver, or bus driver: To get a commercial driver’s license (CDL) to transport passengers, to drive a taxi, livery cab, activity vehicle, school or public bus or van, you must provide evidence that you have no criminal record and that you have not been convicted of driving under the influence within five years of the date of your application. You may also be denied a CDL if you have been convicted of certain driving violations (usually involving drugs, alcohol, felonies, and serious traffic violations), even if it occurred while you were driving your own personal vehicle. Firearms sales: You cannot be hired to sell firearms in a retail store if you have been convicted of a felony, illegal narcotics possession, criminally negligent homicide, 3rd degree assault, 2nd degree threatening, 1st degree reckless endangerment, 2nd degree unlawful restraint, 1st or 2nd degree riot, inciting to riot, or 2nd degree stalking. You may work in another department in the store, as long as the store does not mainly sell firearms. Pawnbroker: You cannot get a license to be a pawnbroker if you have been convicted of any felony. Your fingerprints will be taken and a criminal background check done when you apply for such a license. Jewelry sales: You cannot get a license to have a business that buys gold, silver, platinum, watches, precious stones, or coins if you have been convicted of a felony. Your fingerprints will be taken and a criminal background check will be done when you apply. Airport personnel: You cannot work as a security screener or in other airport jobs with direct access to airplanes and secure airport areas if in the prior 10 years you were convicted of (or found not guilty by reason of insanity) certain crimes involving aircraft and/or navigation; murder; assault with intent to murder; espionage; sedition; treason; rape; kidnapping; unlawful possession, sale, distribution or manufacture of an explosive or weapon; extortion; armed or felony unarmed robbery; distribution of, or intent to distribute, a controlled substance; a felony involving a threat; a felony involving willful destruction of property; importation or manufacture of a controlled substance; burglary; theft; dishonesty; fraud; or misrepresentation; possession or distribution of stolen property; aggravated assault; bribery; illegal possession of a controlled substance (if punishable by more than 1 year); any felony involving placing contraband on an aircraft for money; or conspiracy to commit any of the crimes mentioned above. Armored car crew members: You cannot work as an armored car crew member if you were convicted of any crime that would disqualify you from getting a firearm license or permit. Employee benefit plans: You cannot work in any job involving employee benefit plans for 13 years after conviction or end of imprisonment for offenses including robbery, embezzlement, bribery, extortion, fraud, grand larceny, burglary, arson, felonies involving controlled substances, murder, rape, kidnapping, perjury and others unless a court specifically orders otherwise. Unlicensed home child care provider: You cannot receive payment from the state for providing unlicensed child care if you have been convicted of any crime involving sexual assault of a minor or serious physical injury to a minor. The state will not pay you for providing child care if you have been convicted of a felony involving the use, attempted use, or threatened use of physical force against another person; cruelty to persons; injury or risk of injury to or impairing morals of children; abandonment of child under 6; any felony where the victim is under 18; any sexual assault. A check of the state child abuse registry is also required and payment will be denied if there is a substantiated report of child abuse." Source and further information: http://www.websleuths.com/forums/archive/index.php/t-29285.html Further information: http://www.banksandmorris.com/resources/criminalcharges.php