The concept is simple: Two strangers who want kids, but don’t have partners, team up to have and raise a child together. There’s even a TV show, Fox’s “Labor of Love,” in which suitors compete to be co-parent to a former “The Bachelor” contestant; the finale airs July 16. The unusual arrangement is drawing so much interest, there’s now a slew of co-parenting websites, including Modamily, CoParents.com, Pollen Tree and Pride Angel.

Much like dating sites, users set up profiles with photos that detail their interests, beliefs and parenting styles in order to find their perfect co-parenting match.

“It works similarly to any of the traditional dating sites, except everyone here is very interested in starting a family,” said Ivan Fatovic, the founder of Modamily, the first co-parenting site in the US. On Modamily, users swipe on each other’s profiles and hit “Don’t Like” or “Like” to start a conversation. They can opt for free, premium or annual subscription options with varying degrees of benefits. Fatovic, 44, who encourages romance between co-partners, also offers a personal matchmaking service for $2,500 to $10,000.

Fatovic, who launched the site in 2011, said his service has attracted more than 30,000 users. And the trend is picking up momentum.