Tickets
1 iota
1 iota offers free tickets to concerts, talk shows, and live events throughout the NYC, NJ, and CT areas. You can create a free account and start putting in ticket requests on their website: 1 iota. They also have an App for iPhone and Android available for download.
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Oh My Rockness
An online website that provided tickets to alternative and indie artists. They have a section on free summer concert in NYC that you can access on their website Oh My Rockness Free NYC Shows
Goldstar
Goldstar is an event ticketing platform that helps users get tickets at low prices. Check out their Free NYC Events page for free concert advents happening all around the 5 boroughs.
Joesph Papp Free Previews
The Public Theatre in New York City offers a limited amount of free tickets to their upcoming productions through their Joesph Papp Free Preview program. With this program, theatergoers can get free tickets to a production's previews before the show officially opens. To learn more check out their website on the Joesph Papp Free Performances
Events
NYC Parks Events Calendar
The NYC Parks Events website has a comprehensive list of free and low cost events that take place in New York City Parks around the 5 Boroughs. You can see the event schedule here: NYC Parks Free & Low Costs Events
Shakespeare in The Park
Every year, the Public Theater in New York City holds a free summer theater production in Central Park. Usually a production by playwright Shakespeare, they get big ticket names from Broadway, TV, and Movie. You can read more about their next production as well as ticket info on their website: Free Shakespeare in the Park
Little Island - Manhattan, Pier 55
Little Island is a new initiative that is apart of the Hudson River Park revitalization program. Located at Pier 55, this little island oasis offer green lawns, timed entry, and free activities for park goers to enjoy. Entry is free and ticked tickets are only required after 12pm. To learn more, check out their website! Little Island @ Pier 55
City Park Summer Stage Festival
City Park Summer Stage Festival, sponsored by Capital One, is an annual summer concert series located in Prospect Park. Featuring both free and low priced events, you can watch some of the biggest artists perform as well as smaller indie artists from all around the NYC Metro Area! You can check out more on their website! Capital One City Parks Summer Stage