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Become a sponsor to Daniel (dB.) Doubrovkine

I spend my free time maintaining or co-maintaining popular open-source projects, including Ruby Grape, Hashie, slack-ruby-client and slack-ruby-bot, alexa-js/alexa-app, java-native-access, waffle or the Jenkins AnsiColor plugin.

Current sponsors 8

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Past sponsors 10

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Featured work

  1. slack-ruby/slack-ruby-bot

    The easiest way to write a Slack bot in Ruby.

    Ruby 1,112
  2. ruby-grape/grape

    An opinionated framework for creating REST-like APIs in Ruby.

    Ruby 9,673
  3. java-native-access/jna

    Java Native Access

    Java 7,626
  4. Waffle/waffle

    Enable drop-in Windows Single Sign On for popular Java web servers.

    Java 432
  5. hashie/hashie

    Hashie is a collection of classes and mixins that make Ruby hashes more powerful.

    Ruby 2,883
  6. alexa-js/alexa-app

    A framework for Alexa (Amazon Echo) apps using Node.js

    JavaScript 1,027

Select a tier

$ a month

You'll receive any rewards listed in the $25 monthly tier.

$1 a month


A small thank you.

$10 a month


I'm using one of your open-source projects.

$25 a month


We are a small company relying on one of your open-source projects. Thanks in advance for a shout-out on Twitter!

$50 a month


We're an enterprise relying on one of my open-source projects. Thanks in advance for a shout-out on Twitter!