Welcome to Joyful Systems, Simon Michael’s home on the web. I’m an independent software developer and consultant, specialising in web development and Free/open-source software. I’m based in Los Angeles, California and also like to visit my home town, Dublin, Ireland. Here’s more about my services.

I love to create effective, reliable software that empowers people and communities. I am the creator of the Zwiki and hledger free software projects, and a contributor to many others; see projects.