2020 API Open Source Retention 
www.vccafe.com
MARCH 11, 2013
VC Cafe highlights everything you need to know from hosting your code in hackathons to open source legal docs. High Quality, and open sourced! Use their api to handle payment related stuff. Rovi API has everything you need for information. Rdio provides the music and the player via an API. Lighthouse.
ConversionXL
JUNE 19, 2019
Don’t use cost per acquisition— use the cost to acquire a customer and the retention cost to keep that customer coming back to buy again. Automate using the API or build something yourself. It’s an open-source, automated tool for improving the quality of web pages. Define quality accurately, then quantity will follow.
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