The primary use of Devcoins is to fund open source projects. With the recent introduction of a Devcoin checkout, soon there will be many more places to spend Devcoins. You can incorporate the Devcoin checkout into your own website, which will allow you to accept Devcoin, Bitcoin and over 20 other cryptocurrencies. See coinpayments.net for more information.
Devcoin is currently accepted at the following sites: