As with any car question it depends on the vehicle. You could try prying the hood open with your hands or taking a flat tool to use for a lever to pry it open. You could also try jacking up the car and if you have a long enough arm you oculd work the latch from underneath. If you know how to do it yourself you could replace the hood cable as well. Best of luck
how to get a 2001 isuzu trooper hood open if release cable is broken
where your latch is broken at you can use a pair of pliers and pull the exposed cable wire and it should open best thing when u open it replace the cable wire
Use a set of pliers to pull the cable even if the plastic latch is broken...
How to open of my BMW 745LI Yr 2003 hood ,whose Hood latch is broken while tried to open the hood
you can get to the latch through the grill
Take the grill out and remove the bolts holding the latch on.
If the hood cable is broken on a Geo Prizm, the only option is to open the hood from underneath the vehicle. It is best to put the car up on a hoist and use a pole to trip the hood latch.
From under car... its not too bad on a lift you can find cable near the hood need to get the inner wire and pull with pliers
To open the hood when the cable is broken on a 1997 Silverado, you can try using a coat hanger to manipulate the latch and push it away from you. You could also try using a long screwdriver to move the hood latch.
The only way i can think of would be to remove your bumper so you can get to the latch, and either unbolt the latch from the core support or unbolt it from the hood...
If it is just the inside handle broken off you can pull the cable with a pair of pliers. If it is in the middle, you should be able to reach up from underneath and cut the cable and then pull the inside cable. If the latch end has pulled off, you may be able to trip the latch from underneath, or take the grill out and unbolt the latch.
You can try unscrewing the grille and getting your hand or tools up to the latch.