BOULDER — Techstars on Tuesday unveiled its 11th class of startups for the Boulder accelerator, a group of 13 companies that includes five from Boulder.

Airstream Health, Blank Slate Systems, IronCore Labs, Sitter and Stateless are the five local companies that will go through the accelerator, a three-month program that culiminates with a demo day during Boulder Startup Week, May 15-19, 2017.

Boulder-based Techstars runs 26 accelerator programs in cities around the world. Boulder was the first to host a Techstars class, in 2007. The Boulder program has so far graduated 110 companies. Participating startups receive $20,000 in seed money and several weeks of intensive mentorship and training to help boost their businesses in exchange for a 6 percent equity stake. The company also offers all participants a $100,000 convertible note as well.

The 2017 class includes:

Airstream Health – creates a new health plan to fix America, Boulder.

Attentive – powers competitive intelligence as a service to help make better, more informed decisions, Braga, Portugal.

Blank Slate Systems – enables workflow management and prototype sketching tools to desktop manufacturing, Boulder.

CANDL – provides simple, secure, and global connectivity for travelers around the world through a global WIFI hotspot providing 4G/LTE coverage in 150+ countries, Atlanta.

Data Nerds – helps anyone buying or selling a home get the data they need to make an informed decision, Kelowna, Canada.

Global EIR – expands economic opportunities in the innovation economy by supporting international entrepreneurs, San Francisco.

Hardbound – helps people understand the world better through fascinating stories designed for the phone, New York City.

IronCore Labs – enables simple end-to-end encryption as a service making it easier than ever to secure data, Boulder and Bozeman, Mont.

Monday – makes it easy to find a job and work that matters, New York and Spain.

PreFix – frees homeowners from the unexpected cost and burden of home maintenance, Austin.

Rodin – enable creation and deployment of VR apps using Javascript, Los Angeles.

Sitter – find, book and pay for babysitters, Boulder.

Stateless – provides network functions as a service, Boulder.